./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.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_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 .......................................................................................................................................................................................................................................................................................................................................................... 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_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 14:37:13,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:37:13,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:37:13,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:37:13,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:37:13,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:37:13,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:37:13,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:37:13,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:37:13,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:37:13,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:37:13,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:37:13,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:37:13,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:37:13,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:37:13,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:37:13,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:37:13,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:37:13,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:37:13,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:37:13,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:37:13,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:37:13,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:37:13,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:37:13,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:37:13,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:37:13,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:37:13,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:37:13,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:37:13,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:37:13,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:37:13,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:37:13,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:37:13,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:37:13,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:37:13,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:37:13,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:37:13,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:37:13,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:37:13,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:37:13,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:37:13,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 14:37:13,452 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:37:13,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:37:13,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:37:13,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:37:13,453 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:37:13,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:37:13,453 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:37:13,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:37:13,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:37:13,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:37:13,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:37:13,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:37:13,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:37:13,454 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:37:13,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:37:13,454 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:37:13,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:37:13,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:37:13,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:37:13,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:37:13,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:37:13,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:37:13,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:37:13,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:37:13,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:37:13,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:37:13,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:37:13,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:37:13,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:37:13,456 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_3f3bc611-5b03-4249-bf78-934f99b50c29/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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2019-12-07 14:37:13,558 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:37:13,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:37:13,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:37:13,572 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:37:13,572 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:37:13,573 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-12-07 14:37:13,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/data/94b63599a/f9a3122d33e74ad183f2e7fa1c114c4a/FLAG7cc66e347 [2019-12-07 14:37:14,048 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:37:14,049 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-12-07 14:37:14,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/data/94b63599a/f9a3122d33e74ad183f2e7fa1c114c4a/FLAG7cc66e347 [2019-12-07 14:37:14,415 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/data/94b63599a/f9a3122d33e74ad183f2e7fa1c114c4a [2019-12-07 14:37:14,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:37:14,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:37:14,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:37:14,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:37:14,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:37:14,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:37:14" (1/1) ... [2019-12-07 14:37:14,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@745456e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14, skipping insertion in model container [2019-12-07 14:37:14,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:37:14" (1/1) ... [2019-12-07 14:37:14,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:37:14,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:37:14,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:37:14,555 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:37:14,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:37:14,627 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:37:14,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14 WrapperNode [2019-12-07 14:37:14,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:37:14,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:37:14,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:37:14,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:37:14,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14" (1/1) ... [2019-12-07 14:37:14,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14" (1/1) ... [2019-12-07 14:37:14,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:37:14,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:37:14,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:37:14,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:37:14,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14" (1/1) ... [2019-12-07 14:37:14,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14" (1/1) ... [2019-12-07 14:37:14,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14" (1/1) ... [2019-12-07 14:37:14,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14" (1/1) ... [2019-12-07 14:37:14,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14" (1/1) ... [2019-12-07 14:37:14,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14" (1/1) ... [2019-12-07 14:37:14,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14" (1/1) ... [2019-12-07 14:37:14,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:37:14,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:37:14,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:37:14,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:37:14,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/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 14:37:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:37:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 14:37:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:37:14,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:37:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 14:37:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:37:14,922 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:37:14,922 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 14:37:14,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:37:14 BoogieIcfgContainer [2019-12-07 14:37:14,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:37:14,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:37:14,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:37:14,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:37:14,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:37:14" (1/3) ... [2019-12-07 14:37:14,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fac98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:37:14, skipping insertion in model container [2019-12-07 14:37:14,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:14" (2/3) ... [2019-12-07 14:37:14,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fac98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:37:14, skipping insertion in model container [2019-12-07 14:37:14,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:37:14" (3/3) ... [2019-12-07 14:37:14,928 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2019-12-07 14:37:14,934 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:37:14,938 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:37:14,945 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:37:14,959 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:37:14,960 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:37:14,960 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:37:14,960 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:37:14,960 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:37:14,960 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:37:14,960 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:37:14,960 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:37:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 14:37:14,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 14:37:14,973 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:37:14,974 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:37:14,974 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:37:14,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:37:14,978 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-12-07 14:37:14,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:37:14,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979925219] [2019-12-07 14:37:14,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:37:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:37:15,056 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 14:37:15,057 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979925219] [2019-12-07 14:37:15,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:37:15,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:37:15,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336989322] [2019-12-07 14:37:15,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 14:37:15,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:37:15,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 14:37:15,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:37:15,071 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-12-07 14:37:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:37:15,083 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-12-07 14:37:15,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:37:15,084 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 14:37:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:37:15,090 INFO L225 Difference]: With dead ends: 62 [2019-12-07 14:37:15,090 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 14:37:15,092 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:37:15,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 14:37:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 14:37:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 14:37:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-12-07 14:37:15,115 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-12-07 14:37:15,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:37:15,115 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 14:37:15,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 14:37:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-12-07 14:37:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 14:37:15,116 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:37:15,116 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:37:15,116 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:37:15,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:37:15,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-12-07 14:37:15,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:37:15,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130768043] [2019-12-07 14:37:15,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:37:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:37:15,158 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 14:37:15,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130768043] [2019-12-07 14:37:15,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:37:15,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:37:15,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889400250] [2019-12-07 14:37:15,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:37:15,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:37:15,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:37:15,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:37:15,160 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-12-07 14:37:15,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:37:15,199 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-12-07 14:37:15,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:37:15,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 14:37:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:37:15,200 INFO L225 Difference]: With dead ends: 53 [2019-12-07 14:37:15,200 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 14:37:15,201 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:37:15,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 14:37:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-12-07 14:37:15,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 14:37:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 14:37:15,205 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-12-07 14:37:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:37:15,205 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 14:37:15,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:37:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 14:37:15,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 14:37:15,206 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:37:15,206 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:37:15,206 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:37:15,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:37:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-12-07 14:37:15,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:37:15,207 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620533171] [2019-12-07 14:37:15,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:37:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:37:15,237 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 14:37:15,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620533171] [2019-12-07 14:37:15,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:37:15,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:37:15,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189781700] [2019-12-07 14:37:15,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:37:15,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:37:15,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:37:15,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:37:15,238 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-12-07 14:37:15,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:37:15,269 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-12-07 14:37:15,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:37:15,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 14:37:15,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:37:15,270 INFO L225 Difference]: With dead ends: 55 [2019-12-07 14:37:15,270 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 14:37:15,271 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:37:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 14:37:15,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-12-07 14:37:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 14:37:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 14:37:15,274 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-12-07 14:37:15,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:37:15,275 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 14:37:15,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:37:15,275 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 14:37:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 14:37:15,275 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:37:15,275 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:37:15,275 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:37:15,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:37:15,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-12-07 14:37:15,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:37:15,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007190050] [2019-12-07 14:37:15,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:37:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:37:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:37:15,318 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:37:15,319 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:37:15,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:37:15 BoogieIcfgContainer [2019-12-07 14:37:15,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:37:15,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:37:15,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:37:15,338 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:37:15,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:37:14" (3/4) ... [2019-12-07 14:37:15,340 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 14:37:15,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:37:15,342 INFO L168 Benchmark]: Toolchain (without parser) took 922.87 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 937.6 MB in the beginning and 1.0 GB in the end (delta: -93.1 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:37:15,342 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 954.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:37:15,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 937.6 MB in the beginning and 1.1 GB in the end (delta: -166.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:37:15,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.61 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:37:15,344 INFO L168 Benchmark]: Boogie Preprocessor took 19.37 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:37:15,344 INFO L168 Benchmark]: RCFGBuilder took 245.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:37:15,344 INFO L168 Benchmark]: TraceAbstraction took 413.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:37:15,345 INFO L168 Benchmark]: Witness Printer took 2.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:37:15,348 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 954.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 208.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 937.6 MB in the beginning and 1.1 GB in the end (delta: -166.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.61 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.37 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 245.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 413.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 14:37:16,767 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-12-07 14:37:16,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:37:16,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:37:16,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:37:16,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:37:16,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:37:16,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:37:16,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:37:16,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:37:16,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:37:16,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:37:16,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:37:16,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:37:16,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:37:16,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:37:16,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:37:16,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:37:16,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:37:16,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:37:16,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:37:16,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:37:16,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:37:16,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:37:16,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:37:16,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:37:16,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:37:16,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:37:16,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:37:16,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:37:16,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:37:16,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:37:16,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:37:16,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:37:16,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:37:16,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:37:16,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:37:16,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:37:16,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:37:16,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 14:37:16,819 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:37:16,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:37:16,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:37:16,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:37:16,821 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:37:16,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:37:16,821 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:37:16,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:37:16,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:37:16,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:37:16,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:37:16,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:37:16,822 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 14:37:16,822 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 14:37:16,823 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:37:16,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:37:16,823 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:37:16,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:37:16,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:37:16,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:37:16,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:37:16,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:37:16,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:37:16,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:37:16,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:37:16,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:37:16,825 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 14:37:16,825 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 14:37:16,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:37:16,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:37:16,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:37:16,826 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_3f3bc611-5b03-4249-bf78-934f99b50c29/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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2019-12-07 14:37:16,989 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:37:17,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:37:17,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:37:17,004 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:37:17,005 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:37:17,005 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-12-07 14:37:17,049 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/data/a6880e7ab/9843ccec9e7e4a1797b229fdff5f2fd8/FLAG2de37a4cb [2019-12-07 14:37:17,375 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:37:17,376 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-12-07 14:37:17,380 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/data/a6880e7ab/9843ccec9e7e4a1797b229fdff5f2fd8/FLAG2de37a4cb [2019-12-07 14:37:17,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/data/a6880e7ab/9843ccec9e7e4a1797b229fdff5f2fd8 [2019-12-07 14:37:17,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:37:17,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:37:17,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:37:17,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:37:17,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:37:17,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:37:17" (1/1) ... [2019-12-07 14:37:17,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41944eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17, skipping insertion in model container [2019-12-07 14:37:17,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:37:17" (1/1) ... [2019-12-07 14:37:17,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:37:17,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:37:17,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:37:17,527 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:37:17,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:37:17,561 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:37:17,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17 WrapperNode [2019-12-07 14:37:17,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:37:17,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:37:17,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:37:17,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:37:17,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17" (1/1) ... [2019-12-07 14:37:17,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17" (1/1) ... [2019-12-07 14:37:17,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:37:17,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:37:17,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:37:17,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:37:17,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17" (1/1) ... [2019-12-07 14:37:17,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17" (1/1) ... [2019-12-07 14:37:17,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17" (1/1) ... [2019-12-07 14:37:17,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17" (1/1) ... [2019-12-07 14:37:17,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17" (1/1) ... [2019-12-07 14:37:17,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17" (1/1) ... [2019-12-07 14:37:17,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17" (1/1) ... [2019-12-07 14:37:17,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:37:17,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:37:17,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:37:17,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:37:17,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/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 14:37:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:37:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 14:37:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:37:17,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:37:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 14:37:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:37:17,922 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:37:17,922 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 14:37:17,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:37:17 BoogieIcfgContainer [2019-12-07 14:37:17,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:37:17,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:37:17,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:37:17,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:37:17,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:37:17" (1/3) ... [2019-12-07 14:37:17,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f27a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:37:17, skipping insertion in model container [2019-12-07 14:37:17,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:37:17" (2/3) ... [2019-12-07 14:37:17,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f27a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:37:17, skipping insertion in model container [2019-12-07 14:37:17,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:37:17" (3/3) ... [2019-12-07 14:37:17,928 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2019-12-07 14:37:17,934 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:37:17,938 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:37:17,946 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:37:17,961 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:37:17,961 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:37:17,962 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:37:17,962 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:37:17,962 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:37:17,962 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:37:17,962 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:37:17,962 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:37:17,972 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 14:37:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 14:37:17,977 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:37:17,977 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:37:17,978 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:37:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:37:17,983 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-12-07 14:37:17,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:37:17,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599852501] [2019-12-07 14:37:17,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/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 14:37:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:37:18,041 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 14:37:18,044 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:37:18,053 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 14:37:18,053 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:37:18,055 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 14:37:18,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599852501] [2019-12-07 14:37:18,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:37:18,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 14:37:18,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056730089] [2019-12-07 14:37:18,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 14:37:18,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:37:18,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 14:37:18,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:37:18,070 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-12-07 14:37:18,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:37:18,082 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-12-07 14:37:18,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:37:18,083 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 14:37:18,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:37:18,090 INFO L225 Difference]: With dead ends: 62 [2019-12-07 14:37:18,090 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 14:37:18,092 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:37:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 14:37:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 14:37:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 14:37:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-12-07 14:37:18,116 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-12-07 14:37:18,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:37:18,116 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 14:37:18,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 14:37:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-12-07 14:37:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 14:37:18,117 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:37:18,117 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:37:18,317 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 14:37:18,318 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:37:18,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:37:18,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-12-07 14:37:18,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:37:18,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102031144] [2019-12-07 14:37:18,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 14:37:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:37:18,446 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 14:37:18,447 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:37:18,471 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 14:37:18,471 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:37:18,491 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 14:37:18,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102031144] [2019-12-07 14:37:18,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:37:18,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 14:37:18,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267865755] [2019-12-07 14:37:18,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 14:37:18,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:37:18,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 14:37:18,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 14:37:18,495 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-12-07 14:37:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:37:18,580 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-12-07 14:37:18,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:37:18,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 14:37:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:37:18,581 INFO L225 Difference]: With dead ends: 68 [2019-12-07 14:37:18,582 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 14:37:18,582 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 14:37:18,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 14:37:18,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-12-07 14:37:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 14:37:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 14:37:18,587 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-12-07 14:37:18,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:37:18,587 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 14:37:18,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 14:37:18,587 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 14:37:18,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 14:37:18,588 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:37:18,588 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:37:18,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 14:37:18,790 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:37:18,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:37:18,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-12-07 14:37:18,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:37:18,793 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973571780] [2019-12-07 14:37:18,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 14:37:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:37:18,892 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 14:37:18,893 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:37:18,908 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 14:37:18,908 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:37:18,926 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 14:37:18,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973571780] [2019-12-07 14:37:18,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:37:18,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 14:37:18,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143972908] [2019-12-07 14:37:18,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:37:18,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:37:18,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:37:18,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:37:18,928 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-12-07 14:37:18,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:37:18,968 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-12-07 14:37:18,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:37:18,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 14:37:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:37:18,969 INFO L225 Difference]: With dead ends: 52 [2019-12-07 14:37:18,969 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 14:37:18,969 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:37:18,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 14:37:18,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 14:37:18,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 14:37:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-12-07 14:37:18,973 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-12-07 14:37:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:37:18,973 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-12-07 14:37:18,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:37:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-12-07 14:37:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 14:37:18,974 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:37:18,974 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:37:19,174 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 14:37:19,175 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:37:19,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:37:19,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-12-07 14:37:19,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:37:19,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42996159] [2019-12-07 14:37:19,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 14:37:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:37:19,306 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 14:37:19,307 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:37:19,316 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 14:37:19,317 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:37:19,328 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 14:37:19,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42996159] [2019-12-07 14:37:19,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:37:19,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 14:37:19,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130909394] [2019-12-07 14:37:19,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 14:37:19,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:37:19,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 14:37:19,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 14:37:19,330 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-12-07 14:37:19,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:37:19,383 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-12-07 14:37:19,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:37:19,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 14:37:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:37:19,384 INFO L225 Difference]: With dead ends: 61 [2019-12-07 14:37:19,385 INFO L226 Difference]: Without dead ends: 52 [2019-12-07 14:37:19,385 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 14:37:19,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-07 14:37:19,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-12-07 14:37:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 14:37:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-12-07 14:37:19,390 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-12-07 14:37:19,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:37:19,391 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-12-07 14:37:19,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 14:37:19,391 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-12-07 14:37:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 14:37:19,391 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:37:19,392 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:37:19,592 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 14:37:19,592 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:37:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:37:19,593 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-12-07 14:37:19,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:37:19,593 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909852796] [2019-12-07 14:37:19,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 14:37:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:37:19,638 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:37:19,639 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:37:19,651 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 14:37:19,651 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:37:19,666 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 14:37:19,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909852796] [2019-12-07 14:37:19,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:37:19,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 14:37:19,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404955141] [2019-12-07 14:37:19,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:37:19,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:37:19,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:37:19,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:37:19,668 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-12-07 14:37:19,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:37:19,677 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-12-07 14:37:19,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:37:19,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-12-07 14:37:19,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:37:19,678 INFO L225 Difference]: With dead ends: 38 [2019-12-07 14:37:19,678 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 14:37:19,679 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:37:19,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 14:37:19,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-07 14:37:19,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 14:37:19,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-12-07 14:37:19,683 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-12-07 14:37:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:37:19,683 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-12-07 14:37:19,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:37:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-12-07 14:37:19,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 14:37:19,684 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:37:19,684 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:37:19,885 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 14:37:19,885 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:37:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:37:19,887 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-12-07 14:37:19,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:37:19,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910601104] [2019-12-07 14:37:19,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 14:37:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:37:19,939 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:37:19,940 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:37:19,973 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 14:37:19,974 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:37:19,975 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:37:20,006 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 14:37:20,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910601104] [2019-12-07 14:37:20,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:37:20,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-12-07 14:37:20,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502822463] [2019-12-07 14:37:20,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 14:37:20,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:37:20,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 14:37:20,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-12-07 14:37:20,008 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-12-07 14:37:20,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:37:20,078 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-12-07 14:37:20,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 14:37:20,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-12-07 14:37:20,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:37:20,079 INFO L225 Difference]: With dead ends: 40 [2019-12-07 14:37:20,079 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 14:37:20,080 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-12-07 14:37:20,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 14:37:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-12-07 14:37:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 14:37:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-12-07 14:37:20,083 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-12-07 14:37:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:37:20,083 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-12-07 14:37:20,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 14:37:20,083 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-12-07 14:37:20,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 14:37:20,084 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:37:20,084 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:37:20,284 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 14:37:20,285 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:37:20,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:37:20,286 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-12-07 14:37:20,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:37:20,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279571788] [2019-12-07 14:37:20,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 14:37:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:37:20,403 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 14:37:20,405 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:37:20,422 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 14:37:20,422 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:37:20,438 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 14:37:20,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279571788] [2019-12-07 14:37:20,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:37:20,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 14:37:20,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022540634] [2019-12-07 14:37:20,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:37:20,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:37:20,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:37:20,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:37:20,441 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-12-07 14:37:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:37:20,478 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-12-07 14:37:20,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:37:20,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-12-07 14:37:20,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:37:20,479 INFO L225 Difference]: With dead ends: 43 [2019-12-07 14:37:20,479 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 14:37:20,479 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 14:37:20,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 14:37:20,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 14:37:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 14:37:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-12-07 14:37:20,482 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-12-07 14:37:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:37:20,482 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-12-07 14:37:20,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:37:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-12-07 14:37:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 14:37:20,483 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:37:20,483 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:37:20,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 14:37:20,684 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:37:20,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:37:20,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-12-07 14:37:20,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:37:20,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624154347] [2019-12-07 14:37:20,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 14:37:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:37:20,787 INFO L264 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 14:37:20,789 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:37:20,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:37:20,853 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 14:37:20,853 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:37:20,854 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:37:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:37:21,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624154347] [2019-12-07 14:37:21,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:37:21,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2019-12-07 14:37:21,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200966221] [2019-12-07 14:37:21,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 14:37:21,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:37:21,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 14:37:21,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-12-07 14:37:21,037 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2019-12-07 14:37:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:37:21,196 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-12-07 14:37:21,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 14:37:21,197 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2019-12-07 14:37:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:37:21,197 INFO L225 Difference]: With dead ends: 23 [2019-12-07 14:37:21,197 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 14:37:21,198 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2019-12-07 14:37:21,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 14:37:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 14:37:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 14:37:21,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 14:37:21,198 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-12-07 14:37:21,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:37:21,198 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:37:21,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 14:37:21,198 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:37:21,199 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 14:37:21,399 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 14:37:21,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 14:37:21,589 INFO L246 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2019-12-07 14:37:21,589 INFO L246 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2019-12-07 14:37:21,589 INFO L246 CegarLoopResult]: For program point L69-2(lines 69 72) no Hoare annotation was computed. [2019-12-07 14:37:21,589 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 14:37:21,589 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 14:37:21,589 INFO L242 CegarLoopResult]: At program point L53(lines 44 54) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_main_~res~0 .cse0) |ULTIMATE.start_main_#t~short9| (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (_ bv0 32) (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32))) (= (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)) .cse0) (= ULTIMATE.start___signbit_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-12-07 14:37:21,590 INFO L246 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2019-12-07 14:37:21,590 INFO L246 CegarLoopResult]: For program point L29(lines 29 32) no Hoare annotation was computed. [2019-12-07 14:37:21,590 INFO L246 CegarLoopResult]: For program point L29-1(lines 29 32) no Hoare annotation was computed. [2019-12-07 14:37:21,590 INFO L246 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2019-12-07 14:37:21,590 INFO L246 CegarLoopResult]: For program point L47-1(lines 47 51) no Hoare annotation was computed. [2019-12-07 14:37:21,590 INFO L242 CegarLoopResult]: At program point L47-2(lines 47 51) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_main_~res~0 .cse0) |ULTIMATE.start_main_#t~short9| (= |ULTIMATE.start_fmin_float_#res| .cse0) (= ULTIMATE.start___signbit_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-12-07 14:37:21,590 INFO L246 CegarLoopResult]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2019-12-07 14:37:21,590 INFO L246 CegarLoopResult]: For program point L23(lines 23 32) no Hoare annotation was computed. [2019-12-07 14:37:21,590 INFO L246 CegarLoopResult]: For program point L23-1(lines 23 32) no Hoare annotation was computed. [2019-12-07 14:37:21,590 INFO L246 CegarLoopResult]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2019-12-07 14:37:21,590 INFO L242 CegarLoopResult]: At program point L15-2(lines 15 19) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24)))) [2019-12-07 14:37:21,590 INFO L246 CegarLoopResult]: For program point L15-3(lines 12 33) no Hoare annotation was computed. [2019-12-07 14:37:21,591 INFO L246 CegarLoopResult]: For program point L15-5(lines 15 19) no Hoare annotation was computed. [2019-12-07 14:37:21,591 INFO L242 CegarLoopResult]: At program point L15-6(lines 15 19) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-12-07 14:37:21,591 INFO L246 CegarLoopResult]: For program point L15-7(lines 12 33) no Hoare annotation was computed. [2019-12-07 14:37:21,591 INFO L242 CegarLoopResult]: At program point L32(lines 12 33) the Hoare annotation is: (and (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24)))) [2019-12-07 14:37:21,591 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 14:37:21,591 INFO L242 CegarLoopResult]: At program point L32-1(lines 12 33) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-12-07 14:37:21,591 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2019-12-07 14:37:21,591 INFO L249 CegarLoopResult]: At program point L74(lines 56 75) the Hoare annotation is: true [2019-12-07 14:37:21,592 INFO L246 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2019-12-07 14:37:21,592 INFO L246 CegarLoopResult]: For program point L41-2(line 41) no Hoare annotation was computed. [2019-12-07 14:37:21,592 INFO L242 CegarLoopResult]: At program point L41-3(lines 35 42) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-12-07 14:37:21,592 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 14:37:21,592 INFO L246 CegarLoopResult]: For program point L26(lines 26 32) no Hoare annotation was computed. [2019-12-07 14:37:21,592 INFO L246 CegarLoopResult]: For program point L26-1(lines 26 32) no Hoare annotation was computed. [2019-12-07 14:37:21,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:37:21 BoogieIcfgContainer [2019-12-07 14:37:21,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:37:21,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:37:21,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:37:21,606 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:37:21,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:37:17" (3/4) ... [2019-12-07 14:37:21,609 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 14:37:21,617 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-12-07 14:37:21,617 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 14:37:21,618 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 14:37:21,636 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && 2bv32 == \result) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-12-07 14:37:21,636 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-12-07 14:37:21,637 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-12-07 14:37:21,637 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && !(0bv32 == \result)) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-12-07 14:37:21,637 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 0bv32 == ~bvadd64(\result, 4294967295bv32)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-12-07 14:37:21,660 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3f3bc611-5b03-4249-bf78-934f99b50c29/bin/uautomizer/witness.graphml [2019-12-07 14:37:21,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:37:21,662 INFO L168 Benchmark]: Toolchain (without parser) took 4270.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 952.4 MB in the beginning and 829.9 MB in the end (delta: 122.4 MB). Peak memory consumption was 261.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:37:21,662 INFO L168 Benchmark]: CDTParser took 0.17 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 14:37:21,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.07 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 14:37:21,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:37:21,663 INFO L168 Benchmark]: Boogie Preprocessor took 24.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:37:21,663 INFO L168 Benchmark]: RCFGBuilder took 269.14 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:37:21,663 INFO L168 Benchmark]: TraceAbstraction took 3681.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 836.8 MB in the end (delta: 266.8 MB). Peak memory consumption was 266.8 MB. Max. memory is 11.5 GB. [2019-12-07 14:37:21,663 INFO L168 Benchmark]: Witness Printer took 54.50 ms. Allocated memory is still 1.2 GB. Free memory was 836.8 MB in the beginning and 829.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 14:37:21,665 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 170.07 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 67.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.01 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 269.14 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3681.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 836.8 MB in the end (delta: 266.8 MB). Peak memory consumption was 266.8 MB. Max. memory is 11.5 GB. * Witness Printer took 54.50 ms. Allocated memory is still 1.2 GB. Free memory was 836.8 MB in the beginning and 829.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && !(0bv32 == \result)) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 0bv32 == ~bvadd64(\result, 4294967295bv32)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && 2bv32 == \result) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 234 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 153 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 184 HoareAnnotationTreeSize, 8 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 16152 SizeOfPredicates, 38 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...