./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 216b013ad4da4eb5e85a87de58b407e30252b4c5 .......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 216b013ad4da4eb5e85a87de58b407e30252b4c5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:57:27,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:27,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:27,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:27,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:27,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:27,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:27,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:27,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:27,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:27,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:27,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:27,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:27,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:27,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:27,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:27,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:27,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:27,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:27,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:27,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:27,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:27,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:27,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:27,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:27,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:27,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:27,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:27,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:27,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:27,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:27,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:27,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:27,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:27,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:27,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:27,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:27,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:27,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:27,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:27,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:27,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:57:27,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:27,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:27,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:27,486 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:27,487 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:27,487 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:27,487 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:27,487 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:27,488 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:27,488 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:27,489 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:27,489 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:27,490 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:27,490 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:27,490 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:27,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:27,491 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:27,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:27,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:27,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:27,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:27,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:27,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:27,493 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:27,493 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:27,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:27,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:27,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:27,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:27,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:27,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:27,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:27,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:27,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:27,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:27,496 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:27,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:27,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:27,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:27,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:27,497 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2020-11-22 12:57:27,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:27,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:27,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:27,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:27,831 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:27,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-11-22 12:57:27,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/data/6be525c58/9a8b5c44c16d48f99f7cf3d98a71d9a7/FLAGdddb41672 [2020-11-22 12:57:28,510 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:28,511 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-11-22 12:57:28,525 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/data/6be525c58/9a8b5c44c16d48f99f7cf3d98a71d9a7/FLAGdddb41672 [2020-11-22 12:57:28,857 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/data/6be525c58/9a8b5c44c16d48f99f7cf3d98a71d9a7 [2020-11-22 12:57:28,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:28,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:28,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:28,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:28,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:28,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:28" (1/1) ... [2020-11-22 12:57:28,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff92e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:28, skipping insertion in model container [2020-11-22 12:57:28,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:28" (1/1) ... [2020-11-22 12:57:28,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:28,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:29,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:29,126 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:29,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:29,167 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:29,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:29 WrapperNode [2020-11-22 12:57:29,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:29,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:29,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:29,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:29,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:29" (1/1) ... [2020-11-22 12:57:29,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:29" (1/1) ... [2020-11-22 12:57:29,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:29,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:29,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:29,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:29,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:29" (1/1) ... [2020-11-22 12:57:29,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:29" (1/1) ... [2020-11-22 12:57:29,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:29" (1/1) ... [2020-11-22 12:57:29,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:29" (1/1) ... [2020-11-22 12:57:29,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:29" (1/1) ... [2020-11-22 12:57:29,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:29" (1/1) ... [2020-11-22 12:57:29,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:29" (1/1) ... [2020-11-22 12:57:29,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:29,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:29,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:29,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:29,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:57:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:29,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-22 12:57:29,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:29,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:29,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:57:29,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:57:30,290 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:30,290 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-22 12:57:30,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:30 BoogieIcfgContainer [2020-11-22 12:57:30,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:30,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:30,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:30,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:30,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:28" (1/3) ... [2020-11-22 12:57:30,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27064c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:30, skipping insertion in model container [2020-11-22 12:57:30,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:29" (2/3) ... [2020-11-22 12:57:30,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27064c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:30, skipping insertion in model container [2020-11-22 12:57:30,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:30" (3/3) ... [2020-11-22 12:57:30,302 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-11-22 12:57:30,314 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:30,318 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:57:30,331 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:57:30,355 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:30,356 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:30,356 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:30,356 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:30,356 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:30,356 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:30,357 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:30,357 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:30,370 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-22 12:57:30,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:57:30,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:30,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:30,376 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:30,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:30,382 INFO L82 PathProgramCache]: Analyzing trace with hash 45569022, now seen corresponding path program 1 times [2020-11-22 12:57:30,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:30,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522326502] [2020-11-22 12:57:30,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:30,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522326502] [2020-11-22 12:57:30,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:30,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:30,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100813675] [2020-11-22 12:57:30,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:57:30,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:30,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:57:30,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:57:30,579 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-22 12:57:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:30,596 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-22 12:57:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:57:30,598 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-22 12:57:30,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:30,610 INFO L225 Difference]: With dead ends: 27 [2020-11-22 12:57:30,611 INFO L226 Difference]: Without dead ends: 12 [2020-11-22 12:57:30,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:57:30,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-22 12:57:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-22 12:57:30,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-22 12:57:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-22 12:57:30,650 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-11-22 12:57:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:30,650 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-22 12:57:30,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:57:30,651 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-22 12:57:30,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:57:30,652 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:30,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:30,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:57:30,653 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:30,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:30,654 INFO L82 PathProgramCache]: Analyzing trace with hash 492017657, now seen corresponding path program 1 times [2020-11-22 12:57:30,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:30,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007414332] [2020-11-22 12:57:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:30,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:57:30,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:57:30,879 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:57:30,879 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:57:30,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:57:30,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:30 BoogieIcfgContainer [2020-11-22 12:57:30,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:30,915 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:30,916 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:30,916 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:30,916 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:30" (3/4) ... [2020-11-22 12:57:30,920 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 12:57:30,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:30,922 INFO L168 Benchmark]: Toolchain (without parser) took 2059.67 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 53.4 MB in the beginning and 47.3 MB in the end (delta: 6.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:30,925 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 43.2 MB in the beginning and 43.2 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:30,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.28 ms. Allocated memory is still 83.9 MB. Free memory was 53.3 MB in the beginning and 60.5 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:30,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.76 ms. Allocated memory is still 83.9 MB. Free memory was 60.5 MB in the beginning and 59.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:30,927 INFO L168 Benchmark]: Boogie Preprocessor took 44.54 ms. Allocated memory is still 83.9 MB. Free memory was 59.0 MB in the beginning and 57.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:30,928 INFO L168 Benchmark]: RCFGBuilder took 1038.66 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 57.4 MB in the beginning and 70.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:30,929 INFO L168 Benchmark]: TraceAbstraction took 620.59 ms. Allocated memory is still 100.7 MB. Free memory was 69.8 MB in the beginning and 47.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:30,929 INFO L168 Benchmark]: Witness Printer took 4.66 ms. Allocated memory is still 100.7 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:30,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 43.2 MB in the beginning and 43.2 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.28 ms. Allocated memory is still 83.9 MB. Free memory was 53.3 MB in the beginning and 60.5 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.76 ms. Allocated memory is still 83.9 MB. Free memory was 60.5 MB in the beginning and 59.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.54 ms. Allocated memory is still 83.9 MB. Free memory was 59.0 MB in the beginning and 57.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1038.66 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 57.4 MB in the beginning and 70.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 620.59 ms. Allocated memory is still 100.7 MB. Free memory was 69.8 MB in the beginning and 47.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.66 ms. Allocated memory is still 100.7 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L71] double res = fmax_double(x, y); [L18] return x != x; [L73] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1250.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:57:33,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:33,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:33,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:33,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:33,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:33,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:33,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:33,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:33,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:33,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:33,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:33,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:33,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:33,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:33,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:33,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:33,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:33,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:33,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:33,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:33,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:33,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:33,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:33,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:33,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:33,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:33,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:33,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:33,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:33,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:33,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:33,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:33,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:33,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:33,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:33,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:33,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:33,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:33,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:33,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:33,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:57:33,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:33,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:33,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:33,665 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:33,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:33,665 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:33,666 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:33,666 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:33,666 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:33,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:33,669 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:57:33,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:57:33,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:33,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:33,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:33,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:33,670 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:57:33,670 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:57:33,671 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:57:33,671 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:57:33,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:33,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:33,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:33,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:33,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:57:33,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:33,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:33,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:33,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:33,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:33,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:33,674 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:57:33,674 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:57:33,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:33,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:33,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:33,675 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2020-11-22 12:57:34,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:34,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:34,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:34,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:34,133 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:34,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-11-22 12:57:34,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/data/b07fa7136/e44df129fdd74aef9a1dd58d796fe457/FLAG15f717b41 [2020-11-22 12:57:34,779 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:34,779 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-11-22 12:57:34,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/data/b07fa7136/e44df129fdd74aef9a1dd58d796fe457/FLAG15f717b41 [2020-11-22 12:57:35,127 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/data/b07fa7136/e44df129fdd74aef9a1dd58d796fe457 [2020-11-22 12:57:35,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:35,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:35,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:35,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:35,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:35,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dcffb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35, skipping insertion in model container [2020-11-22 12:57:35,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:35,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:35,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:35,336 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:35,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:35,381 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:35,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35 WrapperNode [2020-11-22 12:57:35,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:35,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:35,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:35,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:35,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:35,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:35,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:35,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:35,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35" (1/1) ... [2020-11-22 12:57:35,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:35,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:35,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:35,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:35,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:35,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-22 12:57:35,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:57:35,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:57:35,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 12:57:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:35,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:57:36,315 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:36,315 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-22 12:57:36,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:36 BoogieIcfgContainer [2020-11-22 12:57:36,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:36,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:36,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:36,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:36,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:35" (1/3) ... [2020-11-22 12:57:36,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647f359c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:36, skipping insertion in model container [2020-11-22 12:57:36,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:35" (2/3) ... [2020-11-22 12:57:36,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647f359c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:36, skipping insertion in model container [2020-11-22 12:57:36,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:36" (3/3) ... [2020-11-22 12:57:36,327 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-11-22 12:57:36,339 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:36,345 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:57:36,358 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:57:36,386 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:36,386 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:36,387 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:36,388 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:36,389 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:36,389 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:36,389 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:36,389 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-22 12:57:36,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:57:36,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:36,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:36,413 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:36,419 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-22 12:57:36,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:36,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98516559] [2020-11-22 12:57:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:36,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:57:36,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:36,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:36,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98516559] [2020-11-22 12:57:36,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:36,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:57:36,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858803943] [2020-11-22 12:57:36,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:57:36,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:36,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:57:36,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:57:36,626 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-22 12:57:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:36,663 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-22 12:57:36,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:57:36,666 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-22 12:57:36,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:36,685 INFO L225 Difference]: With dead ends: 55 [2020-11-22 12:57:36,688 INFO L226 Difference]: Without dead ends: 25 [2020-11-22 12:57:36,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:57:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-22 12:57:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-22 12:57:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 12:57:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-22 12:57:36,735 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-22 12:57:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:36,735 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-22 12:57:36,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:57:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-22 12:57:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:57:36,737 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:36,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:36,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:57:36,958 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:36,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-22 12:57:36,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:36,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153468670] [2020-11-22 12:57:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:37,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:57:37,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:37,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:37,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153468670] [2020-11-22 12:57:37,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:37,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 12:57:37,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909472891] [2020-11-22 12:57:37,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:37,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:37,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:37,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:37,166 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-22 12:57:37,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:37,317 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-22 12:57:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:37,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-22 12:57:37,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:37,320 INFO L225 Difference]: With dead ends: 52 [2020-11-22 12:57:37,320 INFO L226 Difference]: Without dead ends: 47 [2020-11-22 12:57:37,321 INFO L677 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 [2020-11-22 12:57:37,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-22 12:57:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-22 12:57:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-22 12:57:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-22 12:57:37,336 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-22 12:57:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:37,337 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-22 12:57:37,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:37,338 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-22 12:57:37,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:57:37,339 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:37,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:37,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:57:37,545 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:37,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:37,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-22 12:57:37,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:37,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017111088] [2020-11-22 12:57:37,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:37,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 12:57:37,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:37,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:37,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017111088] [2020-11-22 12:57:37,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:37,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 12:57:37,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066185757] [2020-11-22 12:57:37,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 12:57:37,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:37,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 12:57:37,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:57:37,977 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-22 12:57:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:38,446 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-22 12:57:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:38,448 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-22 12:57:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:38,449 INFO L225 Difference]: With dead ends: 36 [2020-11-22 12:57:38,449 INFO L226 Difference]: Without dead ends: 27 [2020-11-22 12:57:38,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:57:38,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-22 12:57:38,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-22 12:57:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-22 12:57:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-22 12:57:38,454 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-22 12:57:38,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:38,455 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-22 12:57:38,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 12:57:38,455 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-22 12:57:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:57:38,456 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:38,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:38,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:57:38,667 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:38,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:38,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-22 12:57:38,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:38,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631397299] [2020-11-22 12:57:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:38,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:57:38,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:38,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:38,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631397299] [2020-11-22 12:57:38,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:38,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 12:57:38,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647990899] [2020-11-22 12:57:38,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:57:38,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:38,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:57:38,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:57:38,883 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-22 12:57:39,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:39,031 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-22 12:57:39,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:39,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-22 12:57:39,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:39,035 INFO L225 Difference]: With dead ends: 52 [2020-11-22 12:57:39,036 INFO L226 Difference]: Without dead ends: 47 [2020-11-22 12:57:39,036 INFO L677 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 [2020-11-22 12:57:39,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-22 12:57:39,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-22 12:57:39,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-22 12:57:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-22 12:57:39,043 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-22 12:57:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:39,043 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-22 12:57:39,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:57:39,043 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-22 12:57:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 12:57:39,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:39,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:39,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:57:39,245 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:39,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:39,245 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-22 12:57:39,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:39,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240818894] [2020-11-22 12:57:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-22 12:57:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:39,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-22 12:57:39,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:39,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:39,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:39,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240818894] [2020-11-22 12:57:39,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:39,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-22 12:57:39,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986561190] [2020-11-22 12:57:39,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-22 12:57:39,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:39,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-22 12:57:39,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-22 12:57:39,817 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-22 12:57:40,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:40,425 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-22 12:57:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:57:40,437 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-22 12:57:40,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:40,437 INFO L225 Difference]: With dead ends: 32 [2020-11-22 12:57:40,438 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 12:57:40,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-22 12:57:40,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 12:57:40,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-22 12:57:40,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 12:57:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-22 12:57:40,443 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-22 12:57:40,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:40,443 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-22 12:57:40,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-22 12:57:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-22 12:57:40,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-22 12:57:40,444 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:40,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:57:40,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 12:57:40,655 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:57:40,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:40,655 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-22 12:57:40,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:57:40,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119044442] [2020-11-22 12:57:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/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 [2020-11-22 12:57:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:40,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 12:57:40,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:40,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:41,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119044442] [2020-11-22 12:57:41,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:41,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-22 12:57:41,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039737328] [2020-11-22 12:57:41,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 12:57:41,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:57:41,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 12:57:41,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:57:41,065 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-22 12:57:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:41,258 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-22 12:57:41,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:57:41,258 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-22 12:57:41,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:41,258 INFO L225 Difference]: With dead ends: 23 [2020-11-22 12:57:41,258 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:57:41,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-22 12:57:41,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:57:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:57:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:57:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:57:41,260 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-22 12:57:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:41,260 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:57:41,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 12:57:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:57:41,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:57:41,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 12:57:41,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:57:41,810 INFO L274 CegarLoopResult]: For program point L31-1(lines 31 36) no Hoare annotation was computed. [2020-11-22 12:57:41,810 INFO L270 CegarLoopResult]: At program point L31-2(lines 31 36) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2020-11-22 12:57:41,811 INFO L274 CegarLoopResult]: For program point L31-3(lines 28 53) no Hoare annotation was computed. [2020-11-22 12:57:41,811 INFO L274 CegarLoopResult]: For program point L31-5(lines 31 36) no Hoare annotation was computed. [2020-11-22 12:57:41,811 INFO L270 CegarLoopResult]: At program point L31-6(lines 31 36) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2020-11-22 12:57:41,811 INFO L274 CegarLoopResult]: For program point L31-7(lines 28 53) no Hoare annotation was computed. [2020-11-22 12:57:41,811 INFO L270 CegarLoopResult]: At program point L52(lines 28 53) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x)) (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y))) [2020-11-22 12:57:41,811 INFO L270 CegarLoopResult]: At program point L52-1(lines 28 53) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)))) (or (and .cse0 (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|))))) [2020-11-22 12:57:41,811 INFO L274 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-11-22 12:57:41,811 INFO L274 CegarLoopResult]: For program point L48-1(lines 48 52) no Hoare annotation was computed. [2020-11-22 12:57:41,812 INFO L277 CegarLoopResult]: At program point L77(lines 65 78) the Hoare annotation is: true [2020-11-22 12:57:41,812 INFO L274 CegarLoopResult]: For program point L44(lines 44 52) no Hoare annotation was computed. [2020-11-22 12:57:41,812 INFO L274 CegarLoopResult]: For program point L44-1(lines 44 52) no Hoare annotation was computed. [2020-11-22 12:57:41,812 INFO L274 CegarLoopResult]: For program point L73(lines 73 76) no Hoare annotation was computed. [2020-11-22 12:57:41,812 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-22 12:57:41,812 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-22 12:57:41,812 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-22 12:57:41,812 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:57:41,812 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-22 12:57:41,813 INFO L274 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2020-11-22 12:57:41,813 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 12:57:41,813 INFO L274 CegarLoopResult]: For program point L41(lines 41 52) no Hoare annotation was computed. [2020-11-22 12:57:41,813 INFO L274 CegarLoopResult]: For program point L41-1(lines 41 52) no Hoare annotation was computed. [2020-11-22 12:57:41,813 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:57:41,813 INFO L274 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-11-22 12:57:41,813 INFO L274 CegarLoopResult]: For program point L62-2(line 62) no Hoare annotation was computed. [2020-11-22 12:57:41,813 INFO L270 CegarLoopResult]: At program point L62-3(lines 55 63) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|))) [2020-11-22 12:57:41,813 INFO L274 CegarLoopResult]: For program point L59(lines 59 60) no Hoare annotation was computed. [2020-11-22 12:57:41,814 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-11-22 12:57:41,819 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:57:41,826 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:57:41,827 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:57:41,828 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:57:41,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:41 BoogieIcfgContainer [2020-11-22 12:57:41,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:41,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:41,835 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:41,835 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:41,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:36" (3/4) ... [2020-11-22 12:57:41,838 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:57:41,849 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-22 12:57:41,849 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 12:57:41,849 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:57:41,850 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:57:41,874 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result) [2020-11-22 12:57:41,875 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result [2020-11-22 12:57:41,875 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) || (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) [2020-11-22 12:57:41,914 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_42d489b6-4508-489f-b0ba-000db6afe2fd/bin/utaipan/witness.graphml [2020-11-22 12:57:41,914 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:41,916 INFO L168 Benchmark]: Toolchain (without parser) took 6783.27 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.4 MB in the beginning and 23.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:41,917 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 41.7 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:41,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.28 ms. Allocated memory is still 58.7 MB. Free memory was 38.2 MB in the beginning and 27.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:41,917 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.14 ms. Allocated memory is still 58.7 MB. Free memory was 27.2 MB in the beginning and 42.9 MB in the end (delta: -15.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:41,918 INFO L168 Benchmark]: Boogie Preprocessor took 56.68 ms. Allocated memory is still 58.7 MB. Free memory was 42.9 MB in the beginning and 41.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:41,918 INFO L168 Benchmark]: RCFGBuilder took 782.45 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 41.2 MB in the beginning and 49.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:41,919 INFO L168 Benchmark]: TraceAbstraction took 5514.99 ms. Allocated memory is still 71.3 MB. Free memory was 49.3 MB in the beginning and 26.8 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:41,919 INFO L168 Benchmark]: Witness Printer took 79.87 ms. Allocated memory is still 71.3 MB. Free memory was 26.8 MB in the beginning and 23.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:41,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 41.7 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.28 ms. Allocated memory is still 58.7 MB. Free memory was 38.2 MB in the beginning and 27.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.14 ms. Allocated memory is still 58.7 MB. Free memory was 27.2 MB in the beginning and 42.9 MB in the end (delta: -15.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.68 ms. Allocated memory is still 58.7 MB. Free memory was 42.9 MB in the beginning and 41.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 782.45 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 41.2 MB in the beginning and 49.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5514.99 ms. Allocated memory is still 71.3 MB. Free memory was 49.3 MB in the beginning and 26.8 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * Witness Printer took 79.87 ms. Allocated memory is still 71.3 MB. Free memory was 26.8 MB in the beginning and 23.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 55]: Loop Invariant [2020-11-22 12:57:41,927 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:57:41,928 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 18]: Loop Invariant [2020-11-22 12:57:41,932 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-22 12:57:41,933 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) || (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 184 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8416 SizeOfPredicates, 32 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...