./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.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_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/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 f441bd4a1f5705911b7315c074b39e665542818e .......................................................................................................................................................................................................................................................................................................................................................... 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_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/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 f441bd4a1f5705911b7315c074b39e665542818e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 17:18:59,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:18:59,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:18:59,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:18:59,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:18:59,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:18:59,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:18:59,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:18:59,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:18:59,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:18:59,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:18:59,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:18:59,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:18:59,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:18:59,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:18:59,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:18:59,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:18:59,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:18:59,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:18:59,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:18:59,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:18:59,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:18:59,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:18:59,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:18:59,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:18:59,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:18:59,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:18:59,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:18:59,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:18:59,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:18:59,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:18:59,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:18:59,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:18:59,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:18:59,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:18:59,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:18:59,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:18:59,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:18:59,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:18:59,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:18:59,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:18:59,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:18:59,050 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:18:59,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:18:59,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:18:59,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:18:59,052 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:18:59,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:18:59,052 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:18:59,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:18:59,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:18:59,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:18:59,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:18:59,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:18:59,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:18:59,053 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:18:59,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:18:59,054 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:18:59,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:18:59,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:18:59,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:18:59,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:18:59,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:18:59,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:18:59,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:18:59,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:18:59,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:18:59,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:18:59,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:18:59,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:18:59,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:18:59,056 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_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/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 -> f441bd4a1f5705911b7315c074b39e665542818e [2019-12-07 17:18:59,160 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:18:59,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:18:59,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:18:59,175 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:18:59,175 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:18:59,175 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-12-07 17:18:59,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/data/ac10ca4e7/4f035ff1238742438bf955858c08c54c/FLAG22a84f9b9 [2019-12-07 17:18:59,618 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:18:59,618 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-12-07 17:18:59,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/data/ac10ca4e7/4f035ff1238742438bf955858c08c54c/FLAG22a84f9b9 [2019-12-07 17:18:59,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/data/ac10ca4e7/4f035ff1238742438bf955858c08c54c [2019-12-07 17:18:59,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:18:59,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:18:59,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:18:59,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:18:59,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:18:59,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:18:59" (1/1) ... [2019-12-07 17:18:59,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408e5454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59, skipping insertion in model container [2019-12-07 17:18:59,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:18:59" (1/1) ... [2019-12-07 17:18:59,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:18:59,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:18:59,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:18:59,769 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:18:59,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:18:59,836 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:18:59,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59 WrapperNode [2019-12-07 17:18:59,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:18:59,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:18:59,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:18:59,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:18:59,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59" (1/1) ... [2019-12-07 17:18:59,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59" (1/1) ... [2019-12-07 17:18:59,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:18:59,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:18:59,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:18:59,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:18:59,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59" (1/1) ... [2019-12-07 17:18:59,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59" (1/1) ... [2019-12-07 17:18:59,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59" (1/1) ... [2019-12-07 17:18:59,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59" (1/1) ... [2019-12-07 17:18:59,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59" (1/1) ... [2019-12-07 17:18:59,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59" (1/1) ... [2019-12-07 17:18:59,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59" (1/1) ... [2019-12-07 17:18:59,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:18:59,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:18:59,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:18:59,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:18:59,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/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 17:18:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 17:18:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:18:59,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:18:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 17:18:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:18:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:19:00,109 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:19:00,109 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 17:19:00,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:19:00 BoogieIcfgContainer [2019-12-07 17:19:00,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:19:00,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:19:00,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:19:00,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:19:00,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:18:59" (1/3) ... [2019-12-07 17:19:00,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112ed5a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:19:00, skipping insertion in model container [2019-12-07 17:19:00,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:18:59" (2/3) ... [2019-12-07 17:19:00,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112ed5a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:19:00, skipping insertion in model container [2019-12-07 17:19:00,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:19:00" (3/3) ... [2019-12-07 17:19:00,116 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-12-07 17:19:00,122 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:19:00,127 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:19:00,135 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:19:00,149 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:19:00,149 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:19:00,149 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:19:00,149 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:19:00,149 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:19:00,149 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:19:00,150 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:19:00,150 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:19:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 17:19:00,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:19:00,163 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:00,163 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:19:00,164 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:00,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:00,167 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-12-07 17:19:00,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:19:00,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494520444] [2019-12-07 17:19:00,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:19:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:00,245 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 17:19:00,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494520444] [2019-12-07 17:19:00,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:19:00,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:19:00,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706990795] [2019-12-07 17:19:00,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 17:19:00,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:19:00,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:19:00,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:19:00,260 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-12-07 17:19:00,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:00,272 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-12-07 17:19:00,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:19:00,273 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 17:19:00,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:00,279 INFO L225 Difference]: With dead ends: 62 [2019-12-07 17:19:00,280 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 17:19:00,281 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 17:19:00,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 17:19:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 17:19:00,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 17:19:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-12-07 17:19:00,304 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-12-07 17:19:00,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:00,304 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 17:19:00,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 17:19:00,304 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-12-07 17:19:00,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:19:00,305 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:00,305 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:19:00,305 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:00,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:00,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-12-07 17:19:00,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:19:00,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266544802] [2019-12-07 17:19:00,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:19:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:00,348 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 17:19:00,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266544802] [2019-12-07 17:19:00,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:19:00,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:19:00,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043363549] [2019-12-07 17:19:00,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:19:00,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:19:00,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:19:00,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:19:00,350 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-12-07 17:19:00,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:00,388 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-12-07 17:19:00,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:19:00,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 17:19:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:00,389 INFO L225 Difference]: With dead ends: 53 [2019-12-07 17:19:00,390 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 17:19:00,390 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 17:19:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 17:19:00,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-12-07 17:19:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 17:19:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 17:19:00,395 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-12-07 17:19:00,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:00,395 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 17:19:00,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:19:00,395 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 17:19:00,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 17:19:00,395 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:00,396 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:19:00,396 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:00,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:00,396 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-12-07 17:19:00,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:19:00,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979497202] [2019-12-07 17:19:00,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:19:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:00,428 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 17:19:00,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979497202] [2019-12-07 17:19:00,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:19:00,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:19:00,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110656071] [2019-12-07 17:19:00,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:19:00,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:19:00,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:19:00,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:19:00,429 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-12-07 17:19:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:00,462 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-12-07 17:19:00,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:19:00,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 17:19:00,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:00,463 INFO L225 Difference]: With dead ends: 55 [2019-12-07 17:19:00,463 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 17:19:00,464 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 17:19:00,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 17:19:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-12-07 17:19:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 17:19:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 17:19:00,469 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-12-07 17:19:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:00,469 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 17:19:00,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:19:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 17:19:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 17:19:00,470 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:00,470 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:19:00,470 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:00,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:00,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-12-07 17:19:00,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:19:00,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544420240] [2019-12-07 17:19:00,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:19:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:19:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:19:00,518 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:19:00,518 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:19:00,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:19:00 BoogieIcfgContainer [2019-12-07 17:19:00,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:19:00,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:19:00,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:19:00,535 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:19:00,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:19:00" (3/4) ... [2019-12-07 17:19:00,538 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:19:00,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:19:00,539 INFO L168 Benchmark]: Toolchain (without parser) took 905.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 943.5 MB in the beginning and 1.0 GB in the end (delta: -103.1 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:00,540 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:19:00,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -175.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:00,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.80 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 17:19:00,541 INFO L168 Benchmark]: Boogie Preprocessor took 19.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:00,541 INFO L168 Benchmark]: RCFGBuilder took 226.12 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:00,542 INFO L168 Benchmark]: TraceAbstraction took 423.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:00,542 INFO L168 Benchmark]: Witness Printer took 2.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:19:00,544 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 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 202.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -175.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.80 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. * Boogie Preprocessor took 19.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 226.12 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 423.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 17:19:01,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:19:01,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:19:01,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:19:01,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:19:01,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:19:01,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:19:01,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:19:01,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:19:01,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:19:01,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:19:01,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:19:01,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:19:01,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:19:01,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:19:01,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:19:01,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:19:01,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:19:01,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:19:01,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:19:01,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:19:01,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:19:01,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:19:01,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:19:01,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:19:01,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:19:01,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:19:01,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:19:01,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:19:01,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:19:01,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:19:01,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:19:01,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:19:01,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:19:01,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:19:01,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:19:01,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:19:01,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:19:01,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:19:01,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:19:02,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:19:02,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 17:19:02,012 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:19:02,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:19:02,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:19:02,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:19:02,014 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:19:02,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:19:02,014 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:19:02,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:19:02,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:19:02,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:19:02,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:19:02,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:19:02,015 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 17:19:02,015 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 17:19:02,015 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:19:02,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:19:02,015 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:19:02,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:19:02,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:19:02,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:19:02,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:19:02,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:19:02,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:19:02,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:19:02,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:19:02,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:19:02,017 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 17:19:02,017 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 17:19:02,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:19:02,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:19:02,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 17:19:02,018 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_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/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 -> f441bd4a1f5705911b7315c074b39e665542818e [2019-12-07 17:19:02,183 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:19:02,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:19:02,194 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:19:02,195 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:19:02,195 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:19:02,195 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-12-07 17:19:02,235 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/data/89660a09b/feadada8c71e42158b58afd79cedcda1/FLAG1c7105691 [2019-12-07 17:19:02,629 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:19:02,629 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2019-12-07 17:19:02,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/data/89660a09b/feadada8c71e42158b58afd79cedcda1/FLAG1c7105691 [2019-12-07 17:19:03,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/data/89660a09b/feadada8c71e42158b58afd79cedcda1 [2019-12-07 17:19:03,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:19:03,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:19:03,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:19:03,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:19:03,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:19:03,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:19:03" (1/1) ... [2019-12-07 17:19:03,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@197b78eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03, skipping insertion in model container [2019-12-07 17:19:03,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:19:03" (1/1) ... [2019-12-07 17:19:03,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:19:03,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:19:03,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:19:03,154 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:19:03,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:19:03,186 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:19:03,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03 WrapperNode [2019-12-07 17:19:03,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:19:03,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:19:03,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:19:03,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:19:03,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03" (1/1) ... [2019-12-07 17:19:03,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03" (1/1) ... [2019-12-07 17:19:03,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:19:03,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:19:03,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:19:03,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:19:03,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03" (1/1) ... [2019-12-07 17:19:03,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03" (1/1) ... [2019-12-07 17:19:03,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03" (1/1) ... [2019-12-07 17:19:03,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03" (1/1) ... [2019-12-07 17:19:03,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03" (1/1) ... [2019-12-07 17:19:03,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03" (1/1) ... [2019-12-07 17:19:03,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03" (1/1) ... [2019-12-07 17:19:03,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:19:03,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:19:03,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:19:03,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:19:03,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/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 17:19:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:19:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 17:19:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:19:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:19:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 17:19:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:19:03,522 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:19:03,523 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 17:19:03,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:19:03 BoogieIcfgContainer [2019-12-07 17:19:03,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:19:03,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:19:03,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:19:03,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:19:03,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:19:03" (1/3) ... [2019-12-07 17:19:03,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cde8a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:19:03, skipping insertion in model container [2019-12-07 17:19:03,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:19:03" (2/3) ... [2019-12-07 17:19:03,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cde8a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:19:03, skipping insertion in model container [2019-12-07 17:19:03,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:19:03" (3/3) ... [2019-12-07 17:19:03,532 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2019-12-07 17:19:03,538 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:19:03,542 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:19:03,549 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:19:03,564 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:19:03,564 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:19:03,564 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:19:03,564 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:19:03,564 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:19:03,564 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:19:03,564 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:19:03,564 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:19:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 17:19:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:19:03,577 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:03,578 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:19:03,578 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:03,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:03,582 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-12-07 17:19:03,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:19:03,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972565592] [2019-12-07 17:19:03,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/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 17:19:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:03,645 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 17:19:03,649 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:19:03,661 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 17:19:03,662 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:19:03,664 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 17:19:03,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972565592] [2019-12-07 17:19:03,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:19:03,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 17:19:03,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624622230] [2019-12-07 17:19:03,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 17:19:03,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:19:03,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:19:03,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:19:03,680 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-12-07 17:19:03,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:03,693 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-12-07 17:19:03,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:19:03,694 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 17:19:03,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:03,701 INFO L225 Difference]: With dead ends: 62 [2019-12-07 17:19:03,701 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 17:19:03,704 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 17:19:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 17:19:03,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 17:19:03,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 17:19:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-12-07 17:19:03,730 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-12-07 17:19:03,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:03,731 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 17:19:03,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 17:19:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-12-07 17:19:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:19:03,731 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:03,732 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:19:03,932 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 17:19:03,932 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:03,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:03,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-12-07 17:19:03,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:19:03,934 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571164808] [2019-12-07 17:19:03,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/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 17:19:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:03,979 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 17:19:03,981 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:19:03,997 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 17:19:03,997 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:19:04,010 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 17:19:04,010 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571164808] [2019-12-07 17:19:04,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:19:04,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 17:19:04,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109748006] [2019-12-07 17:19:04,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:19:04,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:19:04,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:19:04,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:19:04,012 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-12-07 17:19:04,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:04,075 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-12-07 17:19:04,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:19:04,076 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 17:19:04,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:04,077 INFO L225 Difference]: With dead ends: 68 [2019-12-07 17:19:04,077 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 17:19:04,078 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 17:19:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 17:19:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-12-07 17:19:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 17:19:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 17:19:04,083 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-12-07 17:19:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:04,083 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 17:19:04,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:19:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 17:19:04,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 17:19:04,084 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:04,084 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:19:04,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 17:19:04,285 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:04,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-12-07 17:19:04,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:19:04,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52297351] [2019-12-07 17:19:04,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/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 17:19:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:04,396 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 17:19:04,398 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:19:04,414 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 17:19:04,415 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:19:04,434 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 17:19:04,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52297351] [2019-12-07 17:19:04,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:19:04,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 17:19:04,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257334723] [2019-12-07 17:19:04,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:19:04,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:19:04,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:19:04,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:19:04,436 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-12-07 17:19:04,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:04,485 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-12-07 17:19:04,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:19:04,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 17:19:04,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:04,486 INFO L225 Difference]: With dead ends: 52 [2019-12-07 17:19:04,487 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 17:19:04,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:19:04,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 17:19:04,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 17:19:04,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 17:19:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-12-07 17:19:04,490 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-12-07 17:19:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:04,490 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-12-07 17:19:04,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:19:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-12-07 17:19:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 17:19:04,491 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:04,491 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:19:04,692 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 17:19:04,692 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:04,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:04,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-12-07 17:19:04,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:19:04,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179051627] [2019-12-07 17:19:04,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/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 17:19:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:04,781 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 17:19:04,782 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:19:04,790 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 17:19:04,790 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:19:04,801 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 17:19:04,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179051627] [2019-12-07 17:19:04,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:19:04,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 17:19:04,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775346069] [2019-12-07 17:19:04,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:19:04,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:19:04,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:19:04,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:19:04,802 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-12-07 17:19:04,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:04,847 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-12-07 17:19:04,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:19:04,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 17:19:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:04,848 INFO L225 Difference]: With dead ends: 61 [2019-12-07 17:19:04,848 INFO L226 Difference]: Without dead ends: 52 [2019-12-07 17:19:04,849 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 17:19:04,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-07 17:19:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-12-07 17:19:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 17:19:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-12-07 17:19:04,852 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-12-07 17:19:04,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:04,853 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-12-07 17:19:04,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:19:04,853 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-12-07 17:19:04,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 17:19:04,853 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:04,854 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 17:19:05,054 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 17:19:05,055 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:05,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:05,056 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-12-07 17:19:05,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:19:05,057 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73692971] [2019-12-07 17:19:05,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/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 17:19:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:05,136 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 17:19:05,137 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:19:05,148 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 17:19:05,148 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:19:05,163 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 17:19:05,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73692971] [2019-12-07 17:19:05,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:19:05,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 17:19:05,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764256791] [2019-12-07 17:19:05,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:19:05,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:19:05,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:19:05,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:19:05,165 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-12-07 17:19:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:05,173 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-12-07 17:19:05,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 17:19:05,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-12-07 17:19:05,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:05,174 INFO L225 Difference]: With dead ends: 38 [2019-12-07 17:19:05,174 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 17:19:05,175 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:19:05,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 17:19:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-07 17:19:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 17:19:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-12-07 17:19:05,178 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-12-07 17:19:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:05,178 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-12-07 17:19:05,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:19:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-12-07 17:19:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 17:19:05,179 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:05,179 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 17:19:05,380 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 17:19:05,381 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:05,382 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-12-07 17:19:05,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:19:05,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355734035] [2019-12-07 17:19:05,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/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 17:19:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:05,475 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:19:05,476 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:19:05,503 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 17:19:05,503 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:19:05,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:19:05,538 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 17:19:05,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355734035] [2019-12-07 17:19:05,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:19:05,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-12-07 17:19:05,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575410476] [2019-12-07 17:19:05,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 17:19:05,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:19:05,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 17:19:05,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:19:05,540 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-12-07 17:19:05,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:05,610 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-12-07 17:19:05,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:19:05,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-12-07 17:19:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:05,611 INFO L225 Difference]: With dead ends: 40 [2019-12-07 17:19:05,611 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 17:19:05,611 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-12-07 17:19:05,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 17:19:05,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-12-07 17:19:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 17:19:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-12-07 17:19:05,615 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-12-07 17:19:05,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:05,615 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-12-07 17:19:05,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 17:19:05,615 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-12-07 17:19:05,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 17:19:05,616 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:05,616 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 17:19:05,816 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 17:19:05,817 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:05,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:05,818 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-12-07 17:19:05,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:19:05,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750850189] [2019-12-07 17:19:05,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 17:19:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:05,911 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 17:19:05,912 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:19:05,934 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 17:19:05,934 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:19:05,949 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 17:19:05,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750850189] [2019-12-07 17:19:05,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:19:05,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 17:19:05,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635926067] [2019-12-07 17:19:05,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:19:05,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:19:05,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:19:05,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:19:05,952 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-12-07 17:19:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:05,990 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-12-07 17:19:05,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:19:05,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-12-07 17:19:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:05,991 INFO L225 Difference]: With dead ends: 43 [2019-12-07 17:19:05,991 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 17:19:05,992 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:19:05,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 17:19:05,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 17:19:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 17:19:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-12-07 17:19:05,994 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-12-07 17:19:05,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:05,994 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-12-07 17:19:05,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:19:05,994 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-12-07 17:19:05,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 17:19:05,995 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:19:05,995 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:19:06,196 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 17:19:06,197 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:19:06,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:19:06,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-12-07 17:19:06,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:19:06,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855636954] [2019-12-07 17:19:06,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 17:19:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:19:06,307 INFO L264 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 17:19:06,309 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:19:06,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:19:06,379 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 17:19:06,379 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:19:06,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:19:06,528 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 17:19:06,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855636954] [2019-12-07 17:19:06,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:19:06,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2019-12-07 17:19:06,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462010531] [2019-12-07 17:19:06,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 17:19:06,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:19:06,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 17:19:06,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-12-07 17:19:06,530 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2019-12-07 17:19:06,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:19:06,695 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-12-07 17:19:06,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 17:19:06,695 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2019-12-07 17:19:06,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:19:06,695 INFO L225 Difference]: With dead ends: 23 [2019-12-07 17:19:06,696 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:19:06,696 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2019-12-07 17:19:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:19:06,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:19:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:19:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:19:06,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-12-07 17:19:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:19:06,697 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:19:06,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 17:19:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:19:06,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:19:06,898 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 17:19:06,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 17:19:07,095 INFO L246 CegarLoopResult]: For program point L36(lines 36 39) no Hoare annotation was computed. [2019-12-07 17:19:07,095 INFO L246 CegarLoopResult]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2019-12-07 17:19:07,095 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 17:19:07,095 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 17:19:07,095 INFO L246 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2019-12-07 17:19:07,095 INFO L246 CegarLoopResult]: For program point L78-2(lines 78 81) no Hoare annotation was computed. [2019-12-07 17:19:07,096 INFO L242 CegarLoopResult]: At program point L62(lines 53 63) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short9| (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)))) [2019-12-07 17:19:07,096 INFO L246 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2019-12-07 17:19:07,096 INFO L246 CegarLoopResult]: For program point L30(lines 30 39) no Hoare annotation was computed. [2019-12-07 17:19:07,096 INFO L246 CegarLoopResult]: For program point L30-1(lines 30 39) no Hoare annotation was computed. [2019-12-07 17:19:07,096 INFO L246 CegarLoopResult]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2019-12-07 17:19:07,096 INFO L242 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x .cse0) (= .cse0 ULTIMATE.start___fpclassify_float_~x))) [2019-12-07 17:19:07,096 INFO L246 CegarLoopResult]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2019-12-07 17:19:07,096 INFO L246 CegarLoopResult]: For program point L22-5(lines 22 26) no Hoare annotation was computed. [2019-12-07 17:19:07,096 INFO L242 CegarLoopResult]: At program point L22-6(lines 22 26) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2019-12-07 17:19:07,096 INFO L246 CegarLoopResult]: For program point L22-7(lines 19 40) no Hoare annotation was computed. [2019-12-07 17:19:07,096 INFO L246 CegarLoopResult]: For program point L47(lines 47 49) no Hoare annotation was computed. [2019-12-07 17:19:07,097 INFO L242 CegarLoopResult]: At program point L39(lines 19 40) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x .cse0) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|))) [2019-12-07 17:19:07,097 INFO L242 CegarLoopResult]: At program point L39-1(lines 19 40) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2019-12-07 17:19:07,097 INFO L246 CegarLoopResult]: For program point L56-1(lines 56 60) no Hoare annotation was computed. [2019-12-07 17:19:07,097 INFO L242 CegarLoopResult]: At program point L56-2(lines 56 60) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) |ULTIMATE.start_main_#t~short9|) [2019-12-07 17:19:07,097 INFO L246 CegarLoopResult]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2019-12-07 17:19:07,097 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 17:19:07,097 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2019-12-07 17:19:07,097 INFO L246 CegarLoopResult]: For program point L33(lines 33 39) no Hoare annotation was computed. [2019-12-07 17:19:07,097 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 17:19:07,098 INFO L246 CegarLoopResult]: For program point L33-1(lines 33 39) no Hoare annotation was computed. [2019-12-07 17:19:07,098 INFO L249 CegarLoopResult]: At program point L83(lines 65 84) the Hoare annotation is: true [2019-12-07 17:19:07,098 INFO L246 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2019-12-07 17:19:07,098 INFO L246 CegarLoopResult]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-12-07 17:19:07,098 INFO L242 CegarLoopResult]: At program point L50-3(lines 42 51) the Hoare annotation is: (and (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|)) [2019-12-07 17:19:07,098 INFO L246 CegarLoopResult]: For program point L43(lines 43 45) no Hoare annotation was computed. [2019-12-07 17:19:07,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:19:07 BoogieIcfgContainer [2019-12-07 17:19:07,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:19:07,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:19:07,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:19:07,112 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:19:07,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:19:03" (3/4) ... [2019-12-07 17:19:07,115 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:19:07,123 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-12-07 17:19:07,123 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 17:19:07,124 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 17:19:07,142 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && 2bv32 == \result [2019-12-07 17:19:07,142 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result [2019-12-07 17:19:07,143 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux [2019-12-07 17:19:07,143 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result)) && ~Pluszero~LONGDOUBLE() == x [2019-12-07 17:19:07,143 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) [2019-12-07 17:19:07,162 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e1aa5b17-2ecf-4ae7-b5d2-72746a0adacc/bin/uautomizer/witness.graphml [2019-12-07 17:19:07,162 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:19:07,163 INFO L168 Benchmark]: Toolchain (without parser) took 4154.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 952.4 MB in the beginning and 801.3 MB in the end (delta: 151.1 MB). Peak memory consumption was 269.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:07,164 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 17:19:07,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.08 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 936.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:07,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:07,164 INFO L168 Benchmark]: Boogie Preprocessor took 21.94 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:07,165 INFO L168 Benchmark]: RCFGBuilder took 254.76 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:07,165 INFO L168 Benchmark]: TraceAbstraction took 3586.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 808.0 MB in the end (delta: 267.7 MB). Peak memory consumption was 267.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:07,165 INFO L168 Benchmark]: Witness Printer took 50.19 ms. Allocated memory is still 1.1 GB. Free memory was 808.0 MB in the beginning and 801.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:19:07,167 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 177.08 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 936.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.94 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 254.76 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3586.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 808.0 MB in the end (delta: 267.7 MB). Peak memory consumption was 267.7 MB. Max. memory is 11.5 GB. * Witness Printer took 50.19 ms. Allocated memory is still 1.1 GB. Free memory was 808.0 MB in the beginning and 801.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: 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: 42]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && !(0bv32 == \result)) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && 2bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((((((y == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (y == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 3.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 234 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 153 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 168 HoareAnnotationTreeSize, 8 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 14652 SizeOfPredicates, 38 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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...