./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/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_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/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 0.1.25-f470102 [2019-12-07 12:44:39,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:44:39,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:44:39,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:44:39,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:44:39,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:44:39,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:44:39,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:44:39,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:44:39,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:44:39,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:44:39,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:44:39,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:44:39,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:44:39,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:44:39,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:44:39,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:44:39,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:44:39,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:44:39,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:44:39,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:44:39,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:44:39,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:44:39,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:44:39,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:44:39,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:44:39,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:44:39,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:44:39,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:44:39,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:44:39,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:44:39,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:44:39,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:44:39,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:44:39,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:44:39,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:44:39,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:44:39,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:44:39,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:44:39,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:44:39,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:44:39,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 12:44:39,484 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:44:39,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:44:39,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:44:39,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:44:39,486 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:44:39,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:44:39,486 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:44:39,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:44:39,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:44:39,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:44:39,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:44:39,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:44:39,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:44:39,487 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:44:39,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:44:39,488 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:44:39,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:44:39,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:44:39,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:44:39,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:44:39,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:44:39,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:44:39,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:44:39,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:44:39,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:44:39,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:44:39,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:44:39,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:44:39,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:44:39,490 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_37007ee7-289c-424f-8836-b1274bb69e77/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 [2019-12-07 12:44:39,593 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:44:39,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:44:39,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:44:39,608 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:44:39,608 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:44:39,609 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2019-12-07 12:44:39,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/data/f663eeada/26a495d23fef40b0ab6845cf49c9a3dd/FLAGf60fd182f [2019-12-07 12:44:40,053 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:44:40,054 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2019-12-07 12:44:40,057 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/data/f663eeada/26a495d23fef40b0ab6845cf49c9a3dd/FLAGf60fd182f [2019-12-07 12:44:40,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/data/f663eeada/26a495d23fef40b0ab6845cf49c9a3dd [2019-12-07 12:44:40,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:44:40,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:44:40,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:44:40,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:44:40,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:44:40,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:44:40" (1/1) ... [2019-12-07 12:44:40,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ba0c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40, skipping insertion in model container [2019-12-07 12:44:40,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:44:40" (1/1) ... [2019-12-07 12:44:40,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:44:40,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:44:40,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:44:40,215 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:44:40,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:44:40,234 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:44:40,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40 WrapperNode [2019-12-07 12:44:40,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:44:40,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:44:40,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:44:40,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:44:40,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40" (1/1) ... [2019-12-07 12:44:40,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40" (1/1) ... [2019-12-07 12:44:40,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:44:40,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:44:40,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:44:40,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:44:40,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40" (1/1) ... [2019-12-07 12:44:40,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40" (1/1) ... [2019-12-07 12:44:40,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40" (1/1) ... [2019-12-07 12:44:40,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40" (1/1) ... [2019-12-07 12:44:40,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40" (1/1) ... [2019-12-07 12:44:40,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40" (1/1) ... [2019-12-07 12:44:40,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40" (1/1) ... [2019-12-07 12:44:40,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:44:40,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:44:40,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:44:40,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:44:40,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:44:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:44:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:44:40,372 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:44:40,373 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 12:44:40,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:44:40 BoogieIcfgContainer [2019-12-07 12:44:40,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:44:40,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:44:40,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:44:40,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:44:40,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:44:40" (1/3) ... [2019-12-07 12:44:40,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc3ad9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:44:40, skipping insertion in model container [2019-12-07 12:44:40,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:40" (2/3) ... [2019-12-07 12:44:40,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc3ad9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:44:40, skipping insertion in model container [2019-12-07 12:44:40,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:44:40" (3/3) ... [2019-12-07 12:44:40,378 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp3.c [2019-12-07 12:44:40,384 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:44:40,388 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 12:44:40,395 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 12:44:40,409 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:44:40,409 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:44:40,409 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:44:40,409 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:44:40,410 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:44:40,410 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:44:40,410 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:44:40,410 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:44:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-12-07 12:44:40,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 12:44:40,422 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:44:40,422 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 12:44:40,422 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:44:40,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:44:40,426 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-12-07 12:44:40,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:44:40,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383583392] [2019-12-07 12:44:40,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:44:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:44:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:44:40,493 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:44:40,493 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:44:40,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:44:40 BoogieIcfgContainer [2019-12-07 12:44:40,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:44:40,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:44:40,502 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:44:40,502 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:44:40,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:44:40" (3/4) ... [2019-12-07 12:44:40,505 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 12:44:40,505 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:44:40,507 INFO L168 Benchmark]: Toolchain (without parser) took 437.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -126.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:44:40,507 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:44:40,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:44:40,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.15 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:44:40,508 INFO L168 Benchmark]: Boogie Preprocessor took 10.15 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:44:40,509 INFO L168 Benchmark]: RCFGBuilder took 107.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-12-07 12:44:40,509 INFO L168 Benchmark]: TraceAbstraction took 127.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:44:40,509 INFO L168 Benchmark]: Witness Printer took 2.95 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:44:40,511 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 165.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.15 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.15 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 107.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 127.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.95 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * 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: 0.0s, 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 0.1.25-f470102 [2019-12-07 12:44:41,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:44:41,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:44:41,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:44:41,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:44:41,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:44:41,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:44:41,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:44:41,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:44:41,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:44:41,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:44:41,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:44:41,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:44:41,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:44:41,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:44:41,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:44:41,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:44:41,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:44:41,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:44:41,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:44:41,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:44:41,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:44:41,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:44:41,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:44:41,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:44:41,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:44:41,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:44:41,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:44:41,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:44:41,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:44:41,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:44:41,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:44:41,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:44:41,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:44:41,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:44:41,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:44:41,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:44:41,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:44:41,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:44:41,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:44:41,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:44:41,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 12:44:41,921 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:44:41,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:44:41,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:44:41,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:44:41,922 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:44:41,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:44:41,923 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:44:41,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:44:41,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:44:41,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:44:41,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:44:41,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:44:41,923 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 12:44:41,924 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 12:44:41,924 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:44:41,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:44:41,924 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:44:41,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:44:41,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:44:41,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:44:41,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:44:41,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:44:41,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:44:41,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:44:41,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:44:41,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:44:41,925 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 12:44:41,925 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 12:44:41,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:44:41,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:44:41,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:44:41,926 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_37007ee7-289c-424f-8836-b1274bb69e77/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 [2019-12-07 12:44:42,097 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:44:42,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:44:42,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:44:42,108 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:44:42,108 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:44:42,108 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2019-12-07 12:44:42,145 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/data/08a2e0ac9/5d7dcfa80d22470dbce5f08d047e8519/FLAGa5e9c9ecc [2019-12-07 12:44:42,497 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:44:42,498 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2019-12-07 12:44:42,501 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/data/08a2e0ac9/5d7dcfa80d22470dbce5f08d047e8519/FLAGa5e9c9ecc [2019-12-07 12:44:42,925 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/data/08a2e0ac9/5d7dcfa80d22470dbce5f08d047e8519 [2019-12-07 12:44:42,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:44:42,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:44:42,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:44:42,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:44:42,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:44:42,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:44:42" (1/1) ... [2019-12-07 12:44:42,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f52125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:42, skipping insertion in model container [2019-12-07 12:44:42,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:44:42" (1/1) ... [2019-12-07 12:44:42,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:44:42,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:44:43,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:44:43,047 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:44:43,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:44:43,065 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:44:43,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:43 WrapperNode [2019-12-07 12:44:43,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:44:43,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:44:43,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:44:43,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:44:43,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:43" (1/1) ... [2019-12-07 12:44:43,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:43" (1/1) ... [2019-12-07 12:44:43,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:44:43,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:44:43,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:44:43,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:44:43,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:43" (1/1) ... [2019-12-07 12:44:43,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:43" (1/1) ... [2019-12-07 12:44:43,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:43" (1/1) ... [2019-12-07 12:44:43,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:43" (1/1) ... [2019-12-07 12:44:43,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:43" (1/1) ... [2019-12-07 12:44:43,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:43" (1/1) ... [2019-12-07 12:44:43,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:43" (1/1) ... [2019-12-07 12:44:43,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:44:43,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:44:43,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:44:43,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:44:43,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:44:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:44:43,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:44:43,304 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:44:43,304 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 12:44:43,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:44:43 BoogieIcfgContainer [2019-12-07 12:44:43,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:44:43,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:44:43,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:44:43,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:44:43,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:44:42" (1/3) ... [2019-12-07 12:44:43,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e91de11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:44:43, skipping insertion in model container [2019-12-07 12:44:43,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:44:43" (2/3) ... [2019-12-07 12:44:43,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e91de11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:44:43, skipping insertion in model container [2019-12-07 12:44:43,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:44:43" (3/3) ... [2019-12-07 12:44:43,310 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp3.c [2019-12-07 12:44:43,316 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:44:43,320 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 12:44:43,330 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 12:44:43,348 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:44:43,348 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:44:43,348 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:44:43,349 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:44:43,349 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:44:43,349 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:44:43,349 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:44:43,349 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:44:43,358 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-12-07 12:44:43,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 12:44:43,361 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:44:43,361 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 12:44:43,362 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:44:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:44:43,365 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-12-07 12:44:43,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:44:43,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92778851] [2019-12-07 12:44:43,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 12:44:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:44:43,423 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:44:43,427 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:44:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:44:43,468 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:44:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:44:43,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92778851] [2019-12-07 12:44:43,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:44:43,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 12:44:43,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589527031] [2019-12-07 12:44:43,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:44:43,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:44:43,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:44:43,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:44:43,917 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 6 states. [2019-12-07 12:44:43,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:44:43,971 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-07 12:44:43,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:44:43,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-12-07 12:44:43,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:44:43,978 INFO L225 Difference]: With dead ends: 11 [2019-12-07 12:44:43,978 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 12:44:43,980 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:44:43,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 12:44:43,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 12:44:43,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 12:44:43,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 12:44:43,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-12-07 12:44:43,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:44:43,997 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:44:43,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:44:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 12:44:43,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 12:44:44,197 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 12:44:44,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 12:44:44,206 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 12:44:44,206 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 12:44:44,206 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 12:44:44,207 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 12:44:44,207 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2019-12-07 12:44:44,207 INFO L246 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2019-12-07 12:44:44,207 INFO L246 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2019-12-07 12:44:44,207 INFO L246 CegarLoopResult]: For program point L3(lines 3 9) no Hoare annotation was computed. [2019-12-07 12:44:44,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:44:44 BoogieIcfgContainer [2019-12-07 12:44:44,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:44:44,214 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:44:44,214 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:44:44,215 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:44:44,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:44:43" (3/4) ... [2019-12-07 12:44:44,219 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 12:44:44,232 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 12:44:44,232 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 12:44:44,232 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 12:44:44,259 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_37007ee7-289c-424f-8836-b1274bb69e77/bin/uautomizer/witness.graphml [2019-12-07 12:44:44,259 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:44:44,260 INFO L168 Benchmark]: Toolchain (without parser) took 1331.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -97.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:44:44,261 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:44:44,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.09 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:44:44,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.30 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:44:44,262 INFO L168 Benchmark]: Boogie Preprocessor took 40.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -153.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-12-07 12:44:44,262 INFO L168 Benchmark]: RCFGBuilder took 178.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:44:44,262 INFO L168 Benchmark]: TraceAbstraction took 908.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. [2019-12-07 12:44:44,263 INFO L168 Benchmark]: Witness Printer took 44.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:44:44,264 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 136.09 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.30 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -153.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 178.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 908.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. * Witness Printer took 44.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * 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, 8 locations, 1 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 7 SDslu, 2 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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, 0.4s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 3 NumberOfNonLiveVariables, 7 ConjunctsInSsa, 4 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...