./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb63ba8209b4429912d8171cad5a1e8773f9c13b ...................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb63ba8209b4429912d8171cad5a1e8773f9c13b ............................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 04:38:53,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:38:53,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:38:53,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:38:53,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:38:53,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:38:53,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:38:53,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:38:53,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:38:53,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:38:53,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:38:53,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:38:53,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:38:53,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:38:53,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:38:53,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:38:53,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:38:53,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:38:53,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:38:53,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:38:53,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:38:53,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:38:53,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:38:53,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:38:53,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:38:53,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:38:53,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:38:53,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:38:53,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:38:53,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:38:53,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:38:53,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:38:53,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:38:53,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:38:53,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:38:53,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:38:53,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:38:53,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:38:53,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:38:53,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:38:53,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:38:53,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 04:38:53,173 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:38:53,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:38:53,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:38:53,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:38:53,175 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:38:53,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:38:53,175 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:38:53,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:38:53,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:38:53,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:38:53,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:38:53,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:38:53,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:38:53,177 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:38:53,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:38:53,177 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:38:53,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:38:53,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:38:53,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:38:53,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:38:53,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:38:53,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:38:53,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:38:53,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:38:53,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:38:53,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:38:53,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:38:53,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:38:53,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb63ba8209b4429912d8171cad5a1e8773f9c13b [2019-11-20 04:38:53,315 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:38:53,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:38:53,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:38:53,329 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:38:53,330 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:38:53,330 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2019-11-20 04:38:53,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/data/f43abdd42/3f995914a0524810ac74ef9aeef14c75/FLAG98bcd3e1b [2019-11-20 04:38:53,788 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:38:53,789 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2019-11-20 04:38:53,794 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/data/f43abdd42/3f995914a0524810ac74ef9aeef14c75/FLAG98bcd3e1b [2019-11-20 04:38:54,173 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/data/f43abdd42/3f995914a0524810ac74ef9aeef14c75 [2019-11-20 04:38:54,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:38:54,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:38:54,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:38:54,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:38:54,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:38:54,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:38:54" (1/1) ... [2019-11-20 04:38:54,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ea98d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54, skipping insertion in model container [2019-11-20 04:38:54,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:38:54" (1/1) ... [2019-11-20 04:38:54,193 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:38:54,209 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:38:54,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:38:54,397 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:38:54,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:38:54,479 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:38:54,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54 WrapperNode [2019-11-20 04:38:54,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:38:54,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:38:54,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:38:54,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:38:54,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54" (1/1) ... [2019-11-20 04:38:54,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54" (1/1) ... [2019-11-20 04:38:54,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:38:54,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:38:54,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:38:54,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:38:54,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54" (1/1) ... [2019-11-20 04:38:54,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54" (1/1) ... [2019-11-20 04:38:54,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54" (1/1) ... [2019-11-20 04:38:54,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54" (1/1) ... [2019-11-20 04:38:54,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54" (1/1) ... [2019-11-20 04:38:54,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54" (1/1) ... [2019-11-20 04:38:54,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54" (1/1) ... [2019-11-20 04:38:54,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:38:54,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:38:54,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:38:54,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:38:54,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:38:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:38:54,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:38:54,690 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:38:54,690 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 04:38:54,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:38:54 BoogieIcfgContainer [2019-11-20 04:38:54,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:38:54,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:38:54,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:38:54,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:38:54,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:38:54" (1/3) ... [2019-11-20 04:38:54,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc4c4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:38:54, skipping insertion in model container [2019-11-20 04:38:54,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:54" (2/3) ... [2019-11-20 04:38:54,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc4c4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:38:54, skipping insertion in model container [2019-11-20 04:38:54,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:38:54" (3/3) ... [2019-11-20 04:38:54,698 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp3.c [2019-11-20 04:38:54,707 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:38:54,713 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 04:38:54,723 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 04:38:54,742 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:38:54,742 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:38:54,742 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:38:54,743 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:38:54,743 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:38:54,743 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:38:54,743 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:38:54,743 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:38:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-20 04:38:54,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 04:38:54,759 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:38:54,760 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 04:38:54,760 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:38:54,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:38:54,766 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 04:38:54,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:38:54,775 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674775028] [2019-11-20 04:38:54,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:38:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:38:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:38:54,845 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:38:54,846 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 04:38:54,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:38:54 BoogieIcfgContainer [2019-11-20 04:38:54,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:38:54,859 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:38:54,859 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:38:54,859 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:38:54,860 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:38:54" (3/4) ... [2019-11-20 04:38:54,863 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 04:38:54,863 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:38:54,865 INFO L168 Benchmark]: Toolchain (without parser) took 687.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -164.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:38:54,866 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:38:54,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2019-11-20 04:38:54,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:38:54,868 INFO L168 Benchmark]: Boogie Preprocessor took 13.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:38:54,868 INFO L168 Benchmark]: RCFGBuilder took 160.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:38:54,869 INFO L168 Benchmark]: TraceAbstraction took 166.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:38:54,870 INFO L168 Benchmark]: Witness Printer took 4.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:38:54,873 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 302.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 160.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 166.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 8, overapproximation of someBinaryArithmeticFLOAToperation at line 6. Possible FailurePath: [L6] float fs1=2.0f/6.0f; [L7] float fs2=fs1*6.0f; [L8] COND TRUE !((int)fs2==2) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 04:38:56,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:38:56,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:38:56,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:38:56,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:38:56,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:38:56,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:38:56,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:38:56,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:38:56,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:38:56,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:38:56,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:38:56,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:38:56,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:38:56,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:38:56,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:38:56,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:38:56,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:38:56,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:38:56,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:38:56,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:38:56,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:38:56,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:38:56,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:38:56,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:38:56,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:38:56,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:38:56,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:38:56,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:38:56,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:38:56,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:38:56,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:38:56,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:38:56,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:38:56,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:38:56,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:38:56,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:38:56,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:38:56,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:38:56,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:38:56,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:38:56,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 04:38:56,780 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:38:56,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:38:56,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:38:56,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:38:56,783 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:38:56,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:38:56,783 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:38:56,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:38:56,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:38:56,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:38:56,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:38:56,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:38:56,785 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 04:38:56,786 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 04:38:56,786 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:38:56,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:38:56,787 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:38:56,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:38:56,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:38:56,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:38:56,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:38:56,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:38:56,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:38:56,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:38:56,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:38:56,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:38:56,789 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 04:38:56,789 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 04:38:56,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:38:56,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 04:38:56,790 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb63ba8209b4429912d8171cad5a1e8773f9c13b [2019-11-20 04:38:57,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:38:57,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:38:57,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:38:57,120 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:38:57,121 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:38:57,122 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2019-11-20 04:38:57,178 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/data/215df6172/f2312f3cb86b4f44aff29c3ce5bc8228/FLAG10c2921d7 [2019-11-20 04:38:57,508 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:38:57,509 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2019-11-20 04:38:57,513 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/data/215df6172/f2312f3cb86b4f44aff29c3ce5bc8228/FLAG10c2921d7 [2019-11-20 04:38:57,909 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/data/215df6172/f2312f3cb86b4f44aff29c3ce5bc8228 [2019-11-20 04:38:57,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:38:57,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:38:57,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:38:57,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:38:57,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:38:57,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:38:57" (1/1) ... [2019-11-20 04:38:57,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598fea5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:57, skipping insertion in model container [2019-11-20 04:38:57,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:38:57" (1/1) ... [2019-11-20 04:38:57,932 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:38:57,946 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:38:58,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:38:58,144 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:38:58,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:38:58,172 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:38:58,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:58 WrapperNode [2019-11-20 04:38:58,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:38:58,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:38:58,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:38:58,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:38:58,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:58" (1/1) ... [2019-11-20 04:38:58,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:58" (1/1) ... [2019-11-20 04:38:58,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:38:58,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:38:58,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:38:58,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:38:58,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:58" (1/1) ... [2019-11-20 04:38:58,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:58" (1/1) ... [2019-11-20 04:38:58,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:58" (1/1) ... [2019-11-20 04:38:58,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:58" (1/1) ... [2019-11-20 04:38:58,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:58" (1/1) ... [2019-11-20 04:38:58,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:58" (1/1) ... [2019-11-20 04:38:58,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:58" (1/1) ... [2019-11-20 04:38:58,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:38:58,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:38:58,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:38:58,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:38:58,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:38:58,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:38:58,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:38:58,492 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:38:58,492 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 04:38:58,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:38:58 BoogieIcfgContainer [2019-11-20 04:38:58,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:38:58,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:38:58,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:38:58,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:38:58,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:38:57" (1/3) ... [2019-11-20 04:38:58,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d696538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:38:58, skipping insertion in model container [2019-11-20 04:38:58,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:38:58" (2/3) ... [2019-11-20 04:38:58,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d696538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:38:58, skipping insertion in model container [2019-11-20 04:38:58,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:38:58" (3/3) ... [2019-11-20 04:38:58,499 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp3.c [2019-11-20 04:38:58,507 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:38:58,512 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 04:38:58,521 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 04:38:58,542 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:38:58,543 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:38:58,543 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:38:58,543 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:38:58,543 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:38:58,543 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:38:58,543 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:38:58,543 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:38:58,556 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-20 04:38:58,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 04:38:58,561 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:38:58,562 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 04:38:58,562 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:38:58,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:38:58,568 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 04:38:58,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:38:58,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395852563] [2019-11-20 04:38:58,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-20 04:38:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:38:58,638 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:38:58,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:38:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:38:58,691 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:38:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:38:58,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395852563] [2019-11-20 04:38:58,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:38:58,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 04:38:58,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360152007] [2019-11-20 04:38:58,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:38:58,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:38:58,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:38:58,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:38:58,796 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2019-11-20 04:38:58,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:38:58,819 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2019-11-20 04:38:58,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:38:58,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-11-20 04:38:58,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:38:58,827 INFO L225 Difference]: With dead ends: 10 [2019-11-20 04:38:58,827 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 04:38:58,830 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:38:58,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 04:38:58,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 04:38:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 04:38:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 04:38:58,847 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2019-11-20 04:38:58,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:38:58,848 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:38:58,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:38:58,848 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:38:58,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 04:38:59,049 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 04:38:59,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 04:38:59,055 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 04:38:59,055 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 04:38:59,055 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 04:38:59,055 INFO L444 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2019-11-20 04:38:59,055 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-11-20 04:38:59,055 INFO L444 ceAbstractionStarter]: For program point L8-1(line 8) no Hoare annotation was computed. [2019-11-20 04:38:59,056 INFO L444 ceAbstractionStarter]: For program point L3(lines 3 9) no Hoare annotation was computed. [2019-11-20 04:38:59,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:38:59 BoogieIcfgContainer [2019-11-20 04:38:59,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:38:59,058 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:38:59,058 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:38:59,059 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:38:59,059 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:38:58" (3/4) ... [2019-11-20 04:38:59,062 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 04:38:59,080 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 04:38:59,080 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 04:38:59,108 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_310d7266-481f-42d4-81a7-3680b58128cd/bin/uautomizer/witness.graphml [2019-11-20 04:38:59,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:38:59,110 INFO L168 Benchmark]: Toolchain (without parser) took 1196.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -151.9 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:38:59,111 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:38:59,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.08 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:38:59,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -212.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-20 04:38:59,112 INFO L168 Benchmark]: Boogie Preprocessor took 26.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2019-11-20 04:38:59,113 INFO L168 Benchmark]: RCFGBuilder took 207.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:38:59,114 INFO L168 Benchmark]: TraceAbstraction took 564.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-11-20 04:38:59,114 INFO L168 Benchmark]: Witness Printer took 50.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:38:59,117 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 258.08 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 85.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -212.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 207.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 564.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Witness Printer took 50.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 6 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 2 NumberOfNonLiveVariables, 6 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...