./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb223ac5dd337697f7c4caeca580bc7e9e7345b8 ..................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb223ac5dd337697f7c4caeca580bc7e9e7345b8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:26,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:26,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:27,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:27,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:27,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:27,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:27,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:27,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:27,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:27,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:27,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:27,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:27,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:27,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:27,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:27,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:27,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:27,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:27,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:27,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:27,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:27,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:27,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:27,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:27,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:27,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:27,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:27,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:27,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:27,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:27,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:27,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:27,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:27,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:27,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:27,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:27,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:27,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:27,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:27,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:27,080 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:56:27,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:27,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:27,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:27,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:27,120 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:27,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:27,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:27,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:27,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:27,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:27,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:27,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:27,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:27,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:27,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:27,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:27,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:27,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:27,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:27,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:27,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:27,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:27,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:27,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:27,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:27,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:27,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:27,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:27,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:27,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb223ac5dd337697f7c4caeca580bc7e9e7345b8 [2020-11-28 02:56:27,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:27,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:27,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:27,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:27,400 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:27,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2020-11-28 02:56:27,484 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/data/f398d4278/d2fcfa6f0148454a94672807e56699ac/FLAGde13aecc1 [2020-11-28 02:56:28,003 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:28,004 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2020-11-28 02:56:28,013 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/data/f398d4278/d2fcfa6f0148454a94672807e56699ac/FLAGde13aecc1 [2020-11-28 02:56:28,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/data/f398d4278/d2fcfa6f0148454a94672807e56699ac [2020-11-28 02:56:28,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:28,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:28,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:28,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:28,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:28,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:28" (1/1) ... [2020-11-28 02:56:28,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7250ea22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28, skipping insertion in model container [2020-11-28 02:56:28,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:28" (1/1) ... [2020-11-28 02:56:28,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:28,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:28,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:28,664 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:28,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:28,717 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:28,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28 WrapperNode [2020-11-28 02:56:28,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:28,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:28,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:28,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:28,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28" (1/1) ... [2020-11-28 02:56:28,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28" (1/1) ... [2020-11-28 02:56:28,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:28,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:28,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:28,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:28,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28" (1/1) ... [2020-11-28 02:56:28,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28" (1/1) ... [2020-11-28 02:56:28,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28" (1/1) ... [2020-11-28 02:56:28,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28" (1/1) ... [2020-11-28 02:56:28,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28" (1/1) ... [2020-11-28 02:56:28,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28" (1/1) ... [2020-11-28 02:56:28,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28" (1/1) ... [2020-11-28 02:56:28,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:28,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:28,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:28,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:28,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/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 [2020-11-28 02:56:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 02:56:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:56:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 02:56:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:28,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:56:28,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-28 02:56:28,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:29,361 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:29,361 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 02:56:29,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:29 BoogieIcfgContainer [2020-11-28 02:56:29,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:29,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:29,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:29,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:29,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:28" (1/3) ... [2020-11-28 02:56:29,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6e5fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:29, skipping insertion in model container [2020-11-28 02:56:29,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:28" (2/3) ... [2020-11-28 02:56:29,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6e5fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:29, skipping insertion in model container [2020-11-28 02:56:29,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:29" (3/3) ... [2020-11-28 02:56:29,376 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-11-28 02:56:29,387 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:29,391 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:56:29,402 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:56:29,441 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:29,442 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:29,442 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:29,442 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:29,442 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:29,442 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:29,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:29,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-28 02:56:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:56:29,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:29,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:29,465 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:29,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:29,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2020-11-28 02:56:29,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:29,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131659074] [2020-11-28 02:56:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:29,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131659074] [2020-11-28 02:56:29,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:29,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:29,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250149897] [2020-11-28 02:56:29,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:56:29,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:29,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:56:29,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:29,675 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-11-28 02:56:29,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:29,699 INFO L93 Difference]: Finished difference Result 73 states and 113 transitions. [2020-11-28 02:56:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:56:29,701 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 02:56:29,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:29,714 INFO L225 Difference]: With dead ends: 73 [2020-11-28 02:56:29,714 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 02:56:29,717 INFO L677 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 [2020-11-28 02:56:29,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 02:56:29,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-28 02:56:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 02:56:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-11-28 02:56:29,755 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2020-11-28 02:56:29,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:29,755 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-11-28 02:56:29,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:56:29,755 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-11-28 02:56:29,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:56:29,756 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:29,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:29,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:29,757 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:29,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:29,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2020-11-28 02:56:29,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:29,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957187980] [2020-11-28 02:56:29,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:29,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:29,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:29,933 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:29,939 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:56:29,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:30,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:30 BoogieIcfgContainer [2020-11-28 02:56:30,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:30,002 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:30,002 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:30,003 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:30,003 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:29" (3/4) ... [2020-11-28 02:56:30,006 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:56:30,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:30,009 INFO L168 Benchmark]: Toolchain (without parser) took 1638.03 ms. Allocated memory is still 96.5 MB. Free memory was 63.9 MB in the beginning and 52.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:30,010 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 73.4 MB. Free memory was 49.7 MB in the beginning and 49.7 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:30,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.98 ms. Allocated memory is still 96.5 MB. Free memory was 63.8 MB in the beginning and 72.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:30,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.88 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 70.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:30,013 INFO L168 Benchmark]: Boogie Preprocessor took 33.35 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 67.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:30,014 INFO L168 Benchmark]: RCFGBuilder took 546.27 ms. Allocated memory is still 96.5 MB. Free memory was 67.9 MB in the beginning and 43.6 MB in the end (delta: 24.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:30,016 INFO L168 Benchmark]: TraceAbstraction took 631.64 ms. Allocated memory is still 96.5 MB. Free memory was 43.1 MB in the beginning and 52.6 MB in the end (delta: -9.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:30,016 INFO L168 Benchmark]: Witness Printer took 3.84 ms. Allocated memory is still 96.5 MB. Free memory was 52.6 MB in the beginning and 52.0 MB in the end (delta: 604.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:30,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 73.4 MB. Free memory was 49.7 MB in the beginning and 49.7 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.98 ms. Allocated memory is still 96.5 MB. Free memory was 63.8 MB in the beginning and 72.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.88 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 70.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.35 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 67.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 546.27 ms. Allocated memory is still 96.5 MB. Free memory was 67.9 MB in the beginning and 43.6 MB in the end (delta: 24.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 631.64 ms. Allocated memory is still 96.5 MB. Free memory was 43.1 MB in the beginning and 52.6 MB in the end (delta: -9.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.84 ms. Allocated memory is still 96.5 MB. Free memory was 52.6 MB in the beginning and 52.0 MB in the end (delta: 604.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someUnaryFLOAToperation at line 139, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L51-L53] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L139] float x = -0.0f; [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L65] COND TRUE ix >= 0x50800000 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L66] COND TRUE ((ix) > 0x7f800000L) [L67] return x + x; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L140] float res = atan_float(x); [L143] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L143] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_req_bl_0620b.c", 3, "reach_error") VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-28 02:56:32,416 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-28 02:56:32,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:32,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:32,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:32,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:32,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:32,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:32,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:32,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:32,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:32,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:32,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:32,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 02:56:32,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:32,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:32,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:32,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:32,528 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:32,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:32,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:32,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:32,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:32,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:32,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:32,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:32,530 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 02:56:32,530 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 02:56:32,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:32,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:32,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:32,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:32,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:32,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:32,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:32,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:32,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:32,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:32,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:32,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:32,532 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 02:56:32,532 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 02:56:32,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:32,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:32,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 02:56:32,533 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb223ac5dd337697f7c4caeca580bc7e9e7345b8 [2020-11-28 02:56:32,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:32,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:32,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:32,969 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:32,970 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:32,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2020-11-28 02:56:33,049 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/data/228ee726b/4fa9efbd88534c3ba650c54211f2e90c/FLAGb3ea22f75 [2020-11-28 02:56:33,633 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:33,634 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2020-11-28 02:56:33,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/data/228ee726b/4fa9efbd88534c3ba650c54211f2e90c/FLAGb3ea22f75 [2020-11-28 02:56:34,011 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/data/228ee726b/4fa9efbd88534c3ba650c54211f2e90c [2020-11-28 02:56:34,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:34,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:34,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:34,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:34,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:34,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:34" (1/1) ... [2020-11-28 02:56:34,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324f5401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34, skipping insertion in model container [2020-11-28 02:56:34,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:34" (1/1) ... [2020-11-28 02:56:34,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:34,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:34,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:34,301 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:34,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:34,416 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:34,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34 WrapperNode [2020-11-28 02:56:34,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:34,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:34,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:34,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:34,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34" (1/1) ... [2020-11-28 02:56:34,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34" (1/1) ... [2020-11-28 02:56:34,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:34,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:34,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:34,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:34,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34" (1/1) ... [2020-11-28 02:56:34,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34" (1/1) ... [2020-11-28 02:56:34,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34" (1/1) ... [2020-11-28 02:56:34,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34" (1/1) ... [2020-11-28 02:56:34,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34" (1/1) ... [2020-11-28 02:56:34,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34" (1/1) ... [2020-11-28 02:56:34,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34" (1/1) ... [2020-11-28 02:56:34,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:34,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:34,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:34,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:34,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/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 [2020-11-28 02:56:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-11-28 02:56:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 02:56:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-28 02:56:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 02:56:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 02:56:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 02:56:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:42,939 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:42,939 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 02:56:42,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:42 BoogieIcfgContainer [2020-11-28 02:56:42,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:42,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:42,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:42,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:42,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:34" (1/3) ... [2020-11-28 02:56:42,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2caf4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:42, skipping insertion in model container [2020-11-28 02:56:42,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:34" (2/3) ... [2020-11-28 02:56:42,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2caf4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:42, skipping insertion in model container [2020-11-28 02:56:42,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:42" (3/3) ... [2020-11-28 02:56:42,947 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-11-28 02:56:42,955 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:42,959 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:56:42,967 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:56:42,991 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:42,992 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:42,992 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:42,992 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:42,992 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:42,992 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:42,993 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:42,993 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:43,007 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-28 02:56:43,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:56:43,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:43,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:43,014 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:43,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:43,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2020-11-28 02:56:43,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:56:43,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513341786] [2020-11-28 02:56:43,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/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 [2020-11-28 02:56:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:44,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 02:56:44,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:44,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:56:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:44,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513341786] [2020-11-28 02:56:44,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:44,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 02:56:44,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980986945] [2020-11-28 02:56:44,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:56:44,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:56:44,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:56:44,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:44,069 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-11-28 02:56:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:44,089 INFO L93 Difference]: Finished difference Result 73 states and 113 transitions. [2020-11-28 02:56:44,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:56:44,090 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 02:56:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:44,100 INFO L225 Difference]: With dead ends: 73 [2020-11-28 02:56:44,100 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 02:56:44,103 INFO L677 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 [2020-11-28 02:56:44,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 02:56:44,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-28 02:56:44,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 02:56:44,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-11-28 02:56:44,136 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2020-11-28 02:56:44,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:44,137 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-11-28 02:56:44,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:56:44,137 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-11-28 02:56:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:56:44,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:44,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:44,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 02:56:44,352 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:44,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:44,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2020-11-28 02:56:44,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:56:44,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168948005] [2020-11-28 02:56:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/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 [2020-11-28 02:56:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:45,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:56:45,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:45,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:56:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:45,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168948005] [2020-11-28 02:56:45,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:45,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 02:56:45,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617390283] [2020-11-28 02:56:45,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:56:45,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:56:45,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:56:45,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:45,472 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 8 states. [2020-11-28 02:56:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:49,816 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2020-11-28 02:56:49,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:56:49,818 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-28 02:56:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:49,819 INFO L225 Difference]: With dead ends: 57 [2020-11-28 02:56:49,819 INFO L226 Difference]: Without dead ends: 32 [2020-11-28 02:56:49,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:56:49,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-28 02:56:49,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-11-28 02:56:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 02:56:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-28 02:56:49,825 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 11 [2020-11-28 02:56:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:49,825 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-28 02:56:49,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:56:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-28 02:56:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:56:49,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:49,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:50,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 02:56:50,030 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:50,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:50,030 INFO L82 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2020-11-28 02:56:50,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:56:50,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080729324] [2020-11-28 02:56:50,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/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 [2020-11-28 02:56:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:51,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:56:51,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:51,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:56:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:51,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080729324] [2020-11-28 02:56:51,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:51,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-11-28 02:56:51,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659470911] [2020-11-28 02:56:51,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:56:51,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:56:51,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:51,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:51,126 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2020-11-28 02:56:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:55,730 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-11-28 02:56:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:55,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-28 02:56:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:55,731 INFO L225 Difference]: With dead ends: 35 [2020-11-28 02:56:55,731 INFO L226 Difference]: Without dead ends: 32 [2020-11-28 02:56:55,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:56:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-28 02:56:55,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-11-28 02:56:55,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 02:56:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-11-28 02:56:55,737 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2020-11-28 02:56:55,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:55,737 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-28 02:56:55,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:56:55,738 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-11-28 02:56:55,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:56:55,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:55,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:55,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 02:56:55,950 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:55,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2020-11-28 02:56:55,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:56:55,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449876744] [2020-11-28 02:56:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/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 [2020-11-28 02:56:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:57,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:56:57,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:57,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:56:58,373 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-11-28 02:56:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:58,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449876744] [2020-11-28 02:56:58,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:58,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 02:56:58,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836532654] [2020-11-28 02:56:58,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:58,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:56:58,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:58,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:58,459 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-11-28 02:56:58,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:58,681 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-11-28 02:56:58,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:58,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 02:56:58,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:58,688 INFO L225 Difference]: With dead ends: 32 [2020-11-28 02:56:58,689 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 02:56:58,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:58,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 02:56:58,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 02:56:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 02:56:58,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-11-28 02:56:58,692 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-11-28 02:56:58,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:58,692 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-11-28 02:56:58,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-11-28 02:56:58,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:56:58,692 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:58,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:58,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 02:56:58,893 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:58,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:58,894 INFO L82 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2020-11-28 02:56:58,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:56:58,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483842560] [2020-11-28 02:56:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/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 [2020-11-28 02:56:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:59,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 02:56:59,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:59,854 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:59,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:57:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:00,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483842560] [2020-11-28 02:57:00,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:00,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2020-11-28 02:57:00,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970173639] [2020-11-28 02:57:00,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 02:57:00,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:57:00,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 02:57:00,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-28 02:57:00,187 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 14 states. [2020-11-28 02:57:00,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:00,438 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-11-28 02:57:00,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:57:00,439 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-11-28 02:57:00,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:00,439 INFO L225 Difference]: With dead ends: 18 [2020-11-28 02:57:00,439 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:57:00,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-11-28 02:57:00,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:57:00,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:57:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:57:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:57:00,440 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-28 02:57:00,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:00,441 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:00,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 02:57:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:00,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:57:00,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 02:57:00,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:57:00,897 INFO L274 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-11-28 02:57:00,897 INFO L274 CegarLoopResult]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2020-11-28 02:57:00,897 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 02:57:00,897 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 02:57:00,897 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:57:00,897 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:57:00,897 INFO L270 CegarLoopResult]: At program point L28(lines 16 29) the Hoare annotation is: false [2020-11-28 02:57:00,897 INFO L274 CegarLoopResult]: For program point L111(lines 111 116) no Hoare annotation was computed. [2020-11-28 02:57:00,898 INFO L270 CegarLoopResult]: At program point L128(lines 119 129) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start_atan_float_#res| .cse0) (= (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32)) (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= .cse0 ULTIMATE.start___signbit_float_~x) (= .cse0 ULTIMATE.start_main_~res~0) (= .cse0 (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))) |ULTIMATE.start_main_#t~short36|)) [2020-11-28 02:57:00,898 INFO L274 CegarLoopResult]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2020-11-28 02:57:00,898 INFO L270 CegarLoopResult]: At program point L122-2(lines 122 126) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start_atan_float_#res| .cse0) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= .cse0 ULTIMATE.start___signbit_float_~x) (= .cse0 ULTIMATE.start_main_~res~0) |ULTIMATE.start_main_#t~short36|)) [2020-11-28 02:57:00,898 INFO L274 CegarLoopResult]: For program point L23(lines 23 27) no Hoare annotation was computed. [2020-11-28 02:57:00,898 INFO L274 CegarLoopResult]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2020-11-28 02:57:00,898 INFO L274 CegarLoopResult]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2020-11-28 02:57:00,898 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2020-11-28 02:57:00,898 INFO L274 CegarLoopResult]: For program point L81(lines 81 97) no Hoare annotation was computed. [2020-11-28 02:57:00,899 INFO L274 CegarLoopResult]: For program point L73(lines 73 98) no Hoare annotation was computed. [2020-11-28 02:57:00,899 INFO L274 CegarLoopResult]: For program point L65(lines 65 72) no Hoare annotation was computed. [2020-11-28 02:57:00,899 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:57:00,899 INFO L274 CegarLoopResult]: For program point L90(lines 90 96) no Hoare annotation was computed. [2020-11-28 02:57:00,899 INFO L274 CegarLoopResult]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2020-11-28 02:57:00,899 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 02:57:00,899 INFO L277 CegarLoopResult]: At program point L148(lines 131 149) the Hoare annotation is: true [2020-11-28 02:57:00,899 INFO L274 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-11-28 02:57:00,899 INFO L274 CegarLoopResult]: For program point L82(lines 82 88) no Hoare annotation was computed. [2020-11-28 02:57:00,899 INFO L274 CegarLoopResult]: For program point L115-2(line 115) no Hoare annotation was computed. [2020-11-28 02:57:00,900 INFO L270 CegarLoopResult]: At program point L115-3(lines 55 117) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start_atan_float_#res| .cse0) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))))) [2020-11-28 02:57:00,900 INFO L274 CegarLoopResult]: For program point L74(lines 74 77) no Hoare annotation was computed. [2020-11-28 02:57:00,900 INFO L274 CegarLoopResult]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2020-11-28 02:57:00,900 INFO L274 CegarLoopResult]: For program point L66(lines 66 67) no Hoare annotation was computed. [2020-11-28 02:57:00,900 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:57:00,900 INFO L274 CegarLoopResult]: For program point L75(lines 75 76) no Hoare annotation was computed. [2020-11-28 02:57:00,900 INFO L274 CegarLoopResult]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2020-11-28 02:57:00,900 INFO L270 CegarLoopResult]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ULTIMATE.start_atan_float_~x (fp.neg (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)))) [2020-11-28 02:57:00,900 INFO L274 CegarLoopResult]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2020-11-28 02:57:00,900 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-11-28 02:57:00,900 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2020-11-28 02:57:00,901 INFO L274 CegarLoopResult]: For program point L68(lines 68 71) no Hoare annotation was computed. [2020-11-28 02:57:00,916 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:00,918 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,918 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,918 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,919 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,919 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,923 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:00,924 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,924 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,924 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,924 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,924 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,926 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:00,926 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,928 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:00,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,930 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,930 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,932 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:00,932 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,932 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,932 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,933 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,933 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,934 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:00,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,947 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:00,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,949 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:00,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,950 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,950 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,950 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,950 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:00,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:00 BoogieIcfgContainer [2020-11-28 02:57:00,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:00,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:00,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:00,955 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:00,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:42" (3/4) ... [2020-11-28 02:57:00,958 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:57:00,973 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-28 02:57:00,974 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-28 02:57:00,974 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:00,975 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:01,002 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) [2020-11-28 02:57:01,004 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && aux-res == -0.0f && __signbit_float(res) == 1-aux [2020-11-28 02:57:01,005 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == -0.0f && __signbit_float(res) == 1-aux [2020-11-28 02:57:01,059 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0bac5216-fa9b-4050-be32-8f56f5f1a33e/bin/uautomizer/witness.graphml [2020-11-28 02:57:01,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:01,061 INFO L168 Benchmark]: Toolchain (without parser) took 27044.43 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 58.3 MB in the beginning and 61.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:01,061 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 73.4 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:01,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.03 ms. Allocated memory is still 73.4 MB. Free memory was 58.2 MB in the beginning and 53.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:01,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.28 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 51.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:01,063 INFO L168 Benchmark]: Boogie Preprocessor took 64.55 ms. Allocated memory is still 73.4 MB. Free memory was 51.5 MB in the beginning and 49.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:01,063 INFO L168 Benchmark]: RCFGBuilder took 8399.01 ms. Allocated memory is still 73.4 MB. Free memory was 49.2 MB in the beginning and 44.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:01,064 INFO L168 Benchmark]: TraceAbstraction took 18011.66 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 43.9 MB in the beginning and 67.1 MB in the end (delta: -23.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:01,064 INFO L168 Benchmark]: Witness Printer took 105.05 ms. Allocated memory is still 92.3 MB. Free memory was 67.1 MB in the beginning and 61.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:01,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 73.4 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 399.03 ms. Allocated memory is still 73.4 MB. Free memory was 58.2 MB in the beginning and 53.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.28 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 51.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.55 ms. Allocated memory is still 73.4 MB. Free memory was 51.5 MB in the beginning and 49.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 8399.01 ms. Allocated memory is still 73.4 MB. Free memory was 49.2 MB in the beginning and 44.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18011.66 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 43.9 MB in the beginning and 67.1 MB in the end (delta: -23.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. * Witness Printer took 105.05 ms. Allocated memory is still 92.3 MB. Free memory was 67.1 MB in the beginning and 61.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 55]: Loop Invariant [2020-11-28 02:57:01,082 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:01,082 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,082 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,083 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,083 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,083 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,084 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:01,084 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,084 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,084 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,085 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,085 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 119]: Loop Invariant [2020-11-28 02:57:01,085 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:01,086 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,086 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,086 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,087 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,087 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,087 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:01,088 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,088 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,088 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,088 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,088 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == -0.0f && __signbit_float(res) == 1-aux - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 122]: Loop Invariant [2020-11-28 02:57:01,089 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:01,090 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,090 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,090 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,091 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,091 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,091 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:01,095 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,096 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,096 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,096 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,096 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && aux-res == -0.0f && __signbit_float(res) == 1-aux - InvariantResult [Line: 59]: Loop Invariant [2020-11-28 02:57:01,097 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:01,097 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,097 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,097 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,098 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,098 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,098 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 02:57:01,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 02:57:01,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 183 SDslu, 183 SDs, 0 SdLazy, 80 SolverSat, 13 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 8.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 136 HoareAnnotationTreeSize, 7 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 124 ConstructedInterpolants, 12 QuantifiedInterpolants, 9709 SizeOfPredicates, 28 NumberOfNonLiveVariables, 523 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...