./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/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 31da98a788dd1938c78053bade42bc512d4e8954 .......................................................................................................................................................................................................................................................................................................................................................... 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_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/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 31da98a788dd1938c78053bade42bc512d4e8954 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:28:33,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:28:33,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:28:33,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:28:33,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:28:33,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:28:33,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:28:33,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:28:33,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:28:33,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:28:33,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:28:33,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:28:33,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:28:33,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:28:33,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:28:33,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:28:33,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:28:33,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:28:33,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:28:33,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:28:33,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:28:33,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:28:33,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:28:33,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:28:33,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:28:33,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:28:33,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:28:33,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:28:33,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:28:33,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:28:33,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:28:33,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:28:33,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:28:33,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:28:33,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:28:33,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:28:33,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:28:33,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:28:33,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:28:33,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:28:33,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:28:33,955 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:28:33,966 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:28:33,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:28:33,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:28:33,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:28:33,968 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:28:33,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:28:33,968 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:28:33,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:28:33,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:28:33,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:28:33,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:28:33,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:28:33,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:28:33,969 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:28:33,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:28:33,969 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:28:33,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:28:33,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:28:33,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:28:33,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:28:33,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:28:33,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:28:33,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:28:33,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:28:33,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:28:33,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:28:33,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:28:33,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:28:33,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:28:33,971 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_2692e403-cae9-4b21-a294-982bd13476ef/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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2019-12-07 15:28:34,079 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:28:34,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:28:34,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:28:34,093 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:28:34,093 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:28:34,093 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-12-07 15:28:34,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/data/d7d550799/1f010cf9c6384dc68da08b9ab28aedc0/FLAG3d62c4e23 [2019-12-07 15:28:34,469 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:28:34,470 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-12-07 15:28:34,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/data/d7d550799/1f010cf9c6384dc68da08b9ab28aedc0/FLAG3d62c4e23 [2019-12-07 15:28:34,482 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/data/d7d550799/1f010cf9c6384dc68da08b9ab28aedc0 [2019-12-07 15:28:34,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:28:34,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:28:34,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:28:34,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:28:34,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:28:34,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:28:34" (1/1) ... [2019-12-07 15:28:34,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2793e68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34, skipping insertion in model container [2019-12-07 15:28:34,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:28:34" (1/1) ... [2019-12-07 15:28:34,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:28:34,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:28:34,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:28:34,644 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:28:34,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:28:34,673 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:28:34,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34 WrapperNode [2019-12-07 15:28:34,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:28:34,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:28:34,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:28:34,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:28:34,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34" (1/1) ... [2019-12-07 15:28:34,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34" (1/1) ... [2019-12-07 15:28:34,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:28:34,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:28:34,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:28:34,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:28:34,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34" (1/1) ... [2019-12-07 15:28:34,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34" (1/1) ... [2019-12-07 15:28:34,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34" (1/1) ... [2019-12-07 15:28:34,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34" (1/1) ... [2019-12-07 15:28:34,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34" (1/1) ... [2019-12-07 15:28:34,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34" (1/1) ... [2019-12-07 15:28:34,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34" (1/1) ... [2019-12-07 15:28:34,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:28:34,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:28:34,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:28:34,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:28:34,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/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 [2019-12-07 15:28:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 15:28:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:28:34,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:28:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:28:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:28:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:28:34,928 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:28:34,928 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 15:28:34,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:28:34 BoogieIcfgContainer [2019-12-07 15:28:34,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:28:34,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:28:34,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:28:34,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:28:34,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:28:34" (1/3) ... [2019-12-07 15:28:34,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fba76f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:28:34, skipping insertion in model container [2019-12-07 15:28:34,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:34" (2/3) ... [2019-12-07 15:28:34,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fba76f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:28:34, skipping insertion in model container [2019-12-07 15:28:34,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:28:34" (3/3) ... [2019-12-07 15:28:34,934 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2019-12-07 15:28:34,940 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:28:34,944 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:28:34,951 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:28:34,968 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:28:34,968 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:28:34,968 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:28:34,968 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:28:34,968 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:28:34,968 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:28:34,968 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:28:34,969 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:28:34,978 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-12-07 15:28:34,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:28:34,982 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:28:34,982 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:28:34,982 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:28:34,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:28:34,986 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-12-07 15:28:34,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:28:34,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367259095] [2019-12-07 15:28:34,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:28:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:28:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:35,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367259095] [2019-12-07 15:28:35,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:28:35,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:28:35,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306858244] [2019-12-07 15:28:35,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:28:35,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:28:35,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:28:35,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:28:35,079 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-12-07 15:28:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:28:35,091 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-12-07 15:28:35,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:28:35,092 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 15:28:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:28:35,098 INFO L225 Difference]: With dead ends: 54 [2019-12-07 15:28:35,098 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 15:28:35,100 INFO L630 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 [2019-12-07 15:28:35,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 15:28:35,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 15:28:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 15:28:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-12-07 15:28:35,123 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-12-07 15:28:35,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:28:35,123 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-12-07 15:28:35,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:28:35,123 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-12-07 15:28:35,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:28:35,124 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:28:35,124 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:28:35,124 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:28:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:28:35,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-12-07 15:28:35,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:28:35,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683789798] [2019-12-07 15:28:35,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:28:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:28:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:35,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683789798] [2019-12-07 15:28:35,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:28:35,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:28:35,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005881359] [2019-12-07 15:28:35,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:28:35,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:28:35,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:28:35,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:28:35,171 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2019-12-07 15:28:35,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:28:35,209 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-12-07 15:28:35,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:28:35,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 15:28:35,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:28:35,210 INFO L225 Difference]: With dead ends: 41 [2019-12-07 15:28:35,210 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 15:28:35,211 INFO L630 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 [2019-12-07 15:28:35,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 15:28:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-12-07 15:28:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 15:28:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-12-07 15:28:35,215 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-12-07 15:28:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:28:35,215 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-12-07 15:28:35,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:28:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-12-07 15:28:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:28:35,216 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:28:35,216 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:28:35,216 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:28:35,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:28:35,216 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2019-12-07 15:28:35,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:28:35,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444938176] [2019-12-07 15:28:35,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:28:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:28:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:35,250 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444938176] [2019-12-07 15:28:35,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:28:35,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:28:35,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131781679] [2019-12-07 15:28:35,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:28:35,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:28:35,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:28:35,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:28:35,251 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2019-12-07 15:28:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:28:35,284 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-12-07 15:28:35,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:28:35,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 15:28:35,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:28:35,285 INFO L225 Difference]: With dead ends: 43 [2019-12-07 15:28:35,285 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 15:28:35,285 INFO L630 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 [2019-12-07 15:28:35,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 15:28:35,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2019-12-07 15:28:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 15:28:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-12-07 15:28:35,289 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2019-12-07 15:28:35,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:28:35,289 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-12-07 15:28:35,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:28:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-12-07 15:28:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:28:35,290 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:28:35,290 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:28:35,290 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:28:35,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:28:35,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-12-07 15:28:35,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:28:35,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660357066] [2019-12-07 15:28:35,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:28:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:28:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:28:35,336 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:28:35,336 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:28:35,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:28:35 BoogieIcfgContainer [2019-12-07 15:28:35,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:28:35,353 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:28:35,353 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:28:35,353 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:28:35,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:28:34" (3/4) ... [2019-12-07 15:28:35,356 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:28:35,356 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:28:35,357 INFO L168 Benchmark]: Toolchain (without parser) took 871.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 939.4 MB in the beginning and 1.0 GB in the end (delta: -69.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:28:35,358 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:28:35,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -141.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:28:35,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:28:35,359 INFO L168 Benchmark]: Boogie Preprocessor took 18.53 ms. Allocated memory is still 1.1 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. [2019-12-07 15:28:35,359 INFO L168 Benchmark]: RCFGBuilder took 210.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:28:35,360 INFO L168 Benchmark]: TraceAbstraction took 423.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:28:35,360 INFO L168 Benchmark]: Witness Printer took 2.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:28:35,363 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 188.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -141.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.53 ms. Allocated memory is still 1.1 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. * RCFGBuilder took 210.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 423.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * Witness Printer took 2.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L12] __uint32_t w; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; [L56] float res = fmin_float(x, y); [L44] return x != x; [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 22 SDslu, 110 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=28occurred 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, 20 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 0.1.25-f470102 [2019-12-07 15:28:36,820 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-12-07 15:28:36,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:28:36,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:28:36,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:28:36,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:28:36,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:28:36,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:28:36,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:28:36,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:28:36,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:28:36,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:28:36,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:28:36,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:28:36,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:28:36,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:28:36,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:28:36,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:28:36,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:28:36,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:28:36,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:28:36,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:28:36,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:28:36,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:28:36,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:28:36,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:28:36,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:28:36,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:28:36,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:28:36,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:28:36,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:28:36,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 15:28:36,864 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:28:36,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:28:36,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:28:36,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:28:36,865 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:28:36,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:28:36,866 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:28:36,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:28:36,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:28:36,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:28:36,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:28:36,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:28:36,866 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 15:28:36,867 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 15:28:36,867 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:28:36,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:28:36,867 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:28:36,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:28:36,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:28:36,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:28:36,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:28:36,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:28:36,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:28:36,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:28:36,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:28:36,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:28:36,868 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 15:28:36,868 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 15:28:36,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:28:36,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:28:36,869 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:28:36,869 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_2692e403-cae9-4b21-a294-982bd13476ef/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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2019-12-07 15:28:37,035 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:28:37,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:28:37,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:28:37,046 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:28:37,046 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:28:37,047 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-12-07 15:28:37,085 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/data/08c7f0473/84042a322a954d1a91d9ac234545c188/FLAG667e1ba2d [2019-12-07 15:28:37,408 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:28:37,408 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-12-07 15:28:37,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/data/08c7f0473/84042a322a954d1a91d9ac234545c188/FLAG667e1ba2d [2019-12-07 15:28:37,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/data/08c7f0473/84042a322a954d1a91d9ac234545c188 [2019-12-07 15:28:37,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:28:37,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:28:37,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:28:37,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:28:37,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:28:37,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:28:37" (1/1) ... [2019-12-07 15:28:37,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41944eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37, skipping insertion in model container [2019-12-07 15:28:37,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:28:37" (1/1) ... [2019-12-07 15:28:37,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:28:37,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:28:37,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:28:37,564 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:28:37,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:28:37,596 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:28:37,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37 WrapperNode [2019-12-07 15:28:37,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:28:37,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:28:37,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:28:37,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:28:37,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37" (1/1) ... [2019-12-07 15:28:37,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37" (1/1) ... [2019-12-07 15:28:37,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:28:37,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:28:37,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:28:37,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:28:37,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37" (1/1) ... [2019-12-07 15:28:37,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37" (1/1) ... [2019-12-07 15:28:37,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37" (1/1) ... [2019-12-07 15:28:37,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37" (1/1) ... [2019-12-07 15:28:37,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37" (1/1) ... [2019-12-07 15:28:37,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37" (1/1) ... [2019-12-07 15:28:37,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37" (1/1) ... [2019-12-07 15:28:37,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:28:37,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:28:37,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:28:37,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:28:37,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/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 [2019-12-07 15:28:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:28:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 15:28:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:28:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:28:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 15:28:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:28:37,907 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:28:37,907 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 15:28:37,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:28:37 BoogieIcfgContainer [2019-12-07 15:28:37,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:28:37,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:28:37,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:28:37,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:28:37,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:28:37" (1/3) ... [2019-12-07 15:28:37,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55265818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:28:37, skipping insertion in model container [2019-12-07 15:28:37,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:28:37" (2/3) ... [2019-12-07 15:28:37,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55265818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:28:37, skipping insertion in model container [2019-12-07 15:28:37,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:28:37" (3/3) ... [2019-12-07 15:28:37,913 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2019-12-07 15:28:37,919 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:28:37,923 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:28:37,930 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:28:37,946 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:28:37,947 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:28:37,947 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:28:37,947 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:28:37,947 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:28:37,947 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:28:37,947 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:28:37,947 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:28:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-12-07 15:28:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:28:37,960 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:28:37,961 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:28:37,961 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:28:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:28:37,965 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-12-07 15:28:37,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:28:37,973 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270419616] [2019-12-07 15:28:37,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/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 [2019-12-07 15:28:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:28:38,025 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 15:28:38,028 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:28:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:38,036 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:28:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:38,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270419616] [2019-12-07 15:28:38,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:28:38,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 15:28:38,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987263738] [2019-12-07 15:28:38,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:28:38,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:28:38,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:28:38,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:28:38,053 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-12-07 15:28:38,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:28:38,065 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-12-07 15:28:38,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:28:38,066 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 15:28:38,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:28:38,073 INFO L225 Difference]: With dead ends: 54 [2019-12-07 15:28:38,073 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 15:28:38,075 INFO L630 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 [2019-12-07 15:28:38,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 15:28:38,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 15:28:38,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 15:28:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-12-07 15:28:38,097 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-12-07 15:28:38,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:28:38,097 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-12-07 15:28:38,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:28:38,098 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-12-07 15:28:38,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:28:38,098 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:28:38,098 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:28:38,299 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 15:28:38,299 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:28:38,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:28:38,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-12-07 15:28:38,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:28:38,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683897119] [2019-12-07 15:28:38,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/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 [2019-12-07 15:28:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:28:38,398 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:28:38,399 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:28:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:38,418 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:28:38,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:38,430 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683897119] [2019-12-07 15:28:38,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:28:38,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 15:28:38,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406500023] [2019-12-07 15:28:38,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:28:38,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:28:38,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:28:38,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:28:38,433 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-12-07 15:28:38,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:28:38,521 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-12-07 15:28:38,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:28:38,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 15:28:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:28:38,522 INFO L225 Difference]: With dead ends: 52 [2019-12-07 15:28:38,522 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 15:28:38,523 INFO L630 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 [2019-12-07 15:28:38,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 15:28:38,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-12-07 15:28:38,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 15:28:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-12-07 15:28:38,528 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-12-07 15:28:38,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:28:38,528 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-12-07 15:28:38,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:28:38,528 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-12-07 15:28:38,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:28:38,528 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:28:38,529 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:28:38,730 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 15:28:38,730 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:28:38,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:28:38,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-12-07 15:28:38,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:28:38,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746081575] [2019-12-07 15:28:38,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/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 [2019-12-07 15:28:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:28:38,856 INFO L264 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:28:38,857 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:28:38,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:28:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:38,924 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:28:39,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:39,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746081575] [2019-12-07 15:28:39,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:28:39,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-12-07 15:28:39,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890792729] [2019-12-07 15:28:39,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 15:28:39,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:28:39,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 15:28:39,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:28:39,002 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-12-07 15:28:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:28:39,215 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-12-07 15:28:39,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:28:39,216 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-12-07 15:28:39,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:28:39,217 INFO L225 Difference]: With dead ends: 36 [2019-12-07 15:28:39,217 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 15:28:39,218 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-12-07 15:28:39,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 15:28:39,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-12-07 15:28:39,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 15:28:39,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-12-07 15:28:39,222 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-12-07 15:28:39,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:28:39,222 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-12-07 15:28:39,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 15:28:39,222 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-12-07 15:28:39,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 15:28:39,223 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:28:39,223 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:28:39,424 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 15:28:39,424 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:28:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:28:39,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-12-07 15:28:39,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:28:39,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516976234] [2019-12-07 15:28:39,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/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 [2019-12-07 15:28:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:28:39,477 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:28:39,478 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:28:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:39,486 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:28:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:39,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516976234] [2019-12-07 15:28:39,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:28:39,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 15:28:39,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164017251] [2019-12-07 15:28:39,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:28:39,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:28:39,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:28:39,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:28:39,499 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-12-07 15:28:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:28:39,572 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-12-07 15:28:39,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:28:39,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 15:28:39,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:28:39,574 INFO L225 Difference]: With dead ends: 52 [2019-12-07 15:28:39,574 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 15:28:39,574 INFO L630 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 [2019-12-07 15:28:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 15:28:39,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-12-07 15:28:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 15:28:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-12-07 15:28:39,578 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-12-07 15:28:39,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:28:39,579 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-12-07 15:28:39,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:28:39,579 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-12-07 15:28:39,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 15:28:39,579 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:28:39,579 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:28:39,780 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 15:28:39,781 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:28:39,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:28:39,782 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-12-07 15:28:39,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:28:39,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700103232] [2019-12-07 15:28:39,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/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 [2019-12-07 15:28:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:28:39,889 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 15:28:39,890 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:28:39,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:28:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:39,962 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:28:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:40,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700103232] [2019-12-07 15:28:40,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:28:40,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-12-07 15:28:40,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470269645] [2019-12-07 15:28:40,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 15:28:40,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:28:40,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 15:28:40,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:28:40,039 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-12-07 15:28:40,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:28:40,322 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-12-07 15:28:40,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:28:40,323 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-12-07 15:28:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:28:40,324 INFO L225 Difference]: With dead ends: 32 [2019-12-07 15:28:40,324 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 15:28:40,324 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-12-07 15:28:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 15:28:40,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 15:28:40,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 15:28:40,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-12-07 15:28:40,327 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-12-07 15:28:40,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:28:40,327 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-12-07 15:28:40,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 15:28:40,327 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-12-07 15:28:40,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 15:28:40,328 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:28:40,328 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:28:40,529 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 15:28:40,530 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:28:40,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:28:40,531 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-12-07 15:28:40,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:28:40,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677150519] [2019-12-07 15:28:40,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/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 [2019-12-07 15:28:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:28:40,620 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:28:40,621 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:28:40,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:28:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:40,672 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:28:40,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:28:40,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677150519] [2019-12-07 15:28:40,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:28:40,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-12-07 15:28:40,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462381925] [2019-12-07 15:28:40,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 15:28:40,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:28:40,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 15:28:40,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:28:40,728 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-12-07 15:28:40,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:28:40,914 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-12-07 15:28:40,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:28:40,914 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-12-07 15:28:40,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:28:40,914 INFO L225 Difference]: With dead ends: 23 [2019-12-07 15:28:40,915 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:28:40,915 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-12-07 15:28:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:28:40,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:28:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:28:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:28:40,916 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-12-07 15:28:40,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:28:40,916 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:28:40,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 15:28:40,916 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:28:40,916 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:28:41,117 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 15:28:41,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 15:28:41,280 INFO L242 CegarLoopResult]: At program point L31(lines 11 32) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-12-07 15:28:41,280 INFO L242 CegarLoopResult]: At program point L31-1(lines 11 32) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse0) (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse0))) [2019-12-07 15:28:41,280 INFO L242 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-12-07 15:28:41,280 INFO L246 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2019-12-07 15:28:41,280 INFO L246 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2019-12-07 15:28:41,280 INFO L242 CegarLoopResult]: At program point L40-3(lines 34 41) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-12-07 15:28:41,280 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 15:28:41,280 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 15:28:41,281 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 15:28:41,281 INFO L246 CegarLoopResult]: For program point L28(lines 28 31) no Hoare annotation was computed. [2019-12-07 15:28:41,281 INFO L246 CegarLoopResult]: For program point L28-1(lines 28 31) no Hoare annotation was computed. [2019-12-07 15:28:41,281 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2019-12-07 15:28:41,281 INFO L246 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2019-12-07 15:28:41,281 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 15:28:41,281 INFO L246 CegarLoopResult]: For program point L58(lines 58 61) no Hoare annotation was computed. [2019-12-07 15:28:41,281 INFO L246 CegarLoopResult]: For program point L25(lines 25 31) no Hoare annotation was computed. [2019-12-07 15:28:41,281 INFO L246 CegarLoopResult]: For program point L25-1(lines 25 31) no Hoare annotation was computed. [2019-12-07 15:28:41,281 INFO L249 CegarLoopResult]: At program point L63(lines 46 64) the Hoare annotation is: true [2019-12-07 15:28:41,281 INFO L246 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2019-12-07 15:28:41,281 INFO L246 CegarLoopResult]: For program point L22(lines 22 31) no Hoare annotation was computed. [2019-12-07 15:28:41,282 INFO L246 CegarLoopResult]: For program point L22-1(lines 22 31) no Hoare annotation was computed. [2019-12-07 15:28:41,282 INFO L246 CegarLoopResult]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-12-07 15:28:41,282 INFO L242 CegarLoopResult]: At program point L14-2(lines 14 18) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-12-07 15:28:41,282 INFO L246 CegarLoopResult]: For program point L14-3(lines 11 32) no Hoare annotation was computed. [2019-12-07 15:28:41,282 INFO L246 CegarLoopResult]: For program point L14-5(lines 14 18) no Hoare annotation was computed. [2019-12-07 15:28:41,282 INFO L242 CegarLoopResult]: At program point L14-6(lines 14 18) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-12-07 15:28:41,282 INFO L246 CegarLoopResult]: For program point L14-7(lines 11 32) no Hoare annotation was computed. [2019-12-07 15:28:41,283 INFO L246 CegarLoopResult]: For program point L35(lines 35 36) no Hoare annotation was computed. [2019-12-07 15:28:41,292 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 15:28:41,293 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 15:28:41,294 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 15:28:41,294 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 15:28:41,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:28:41 BoogieIcfgContainer [2019-12-07 15:28:41,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:28:41,297 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:28:41,297 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:28:41,297 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:28:41,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:28:37" (3/4) ... [2019-12-07 15:28:41,300 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:28:41,308 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 15:28:41,308 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 15:28:41,308 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 15:28:41,326 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) [2019-12-07 15:28:41,326 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && !~fp.eq~FLOAT(y, y) [2019-12-07 15:28:41,327 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) [2019-12-07 15:28:41,349 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2692e403-cae9-4b21-a294-982bd13476ef/bin/uautomizer/witness.graphml [2019-12-07 15:28:41,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:28:41,351 INFO L168 Benchmark]: Toolchain (without parser) took 3926.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 951.0 MB in the beginning and 866.8 MB in the end (delta: 84.3 MB). Peak memory consumption was 213.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:28:41,351 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:28:41,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.76 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:28:41,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:28:41,352 INFO L168 Benchmark]: Boogie Preprocessor took 21.39 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. [2019-12-07 15:28:41,352 INFO L168 Benchmark]: RCFGBuilder took 231.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:28:41,352 INFO L168 Benchmark]: TraceAbstraction took 3387.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 873.6 MB in the end (delta: 217.4 MB). Peak memory consumption was 217.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:28:41,353 INFO L168 Benchmark]: Witness Printer took 52.67 ms. Allocated memory is still 1.2 GB. Free memory was 873.6 MB in the beginning and 866.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:28:41,354 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.76 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 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 58.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.39 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 231.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3387.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 873.6 MB in the end (delta: 217.4 MB). Peak memory consumption was 217.4 MB. Max. memory is 11.5 GB. * Witness Printer took 52.67 ms. Allocated memory is still 1.2 GB. Free memory was 873.6 MB in the beginning and 866.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant [2019-12-07 15:28:41,357 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 15:28:41,358 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 44]: Loop Invariant [2019-12-07 15:28:41,358 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 15:28:41,359 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8562 SizeOfPredicates, 32 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 correct! Received shutdown request...