./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs --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 23f3104f6bf674f4cf2d86feffb86c85d21d7d18 .............................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs --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 23f3104f6bf674f4cf2d86feffb86c85d21d7d18 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:21:35,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:21:35,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:21:35,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:21:35,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:21:35,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:21:35,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:21:35,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:21:35,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:21:35,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:21:35,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:21:35,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:21:35,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:21:35,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:21:35,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:21:35,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:21:35,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:21:35,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:21:35,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:21:35,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:21:35,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:21:35,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:21:35,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:21:35,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:21:35,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:21:35,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:21:35,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:21:35,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:21:35,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:21:35,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:21:35,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:21:35,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:21:35,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:21:35,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:21:35,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:21:35,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:21:35,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:21:35,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:21:35,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:21:35,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:21:35,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:21:35,417 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:21:35,443 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:21:35,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:21:35,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:21:35,444 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:21:35,444 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:21:35,445 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:21:35,445 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:21:35,445 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:21:35,445 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:21:35,445 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:21:35,445 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:21:35,446 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:21:35,446 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:21:35,446 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:21:35,446 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:21:35,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:21:35,447 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:21:35,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:21:35,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:21:35,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:21:35,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:21:35,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:21:35,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:21:35,449 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:21:35,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:21:35,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:21:35,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:21:35,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:21:35,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:21:35,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:21:35,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:21:35,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:21:35,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:21:35,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:21:35,451 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:21:35,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:21:35,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:21:35,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:21:35,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:21:35,454 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_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f3104f6bf674f4cf2d86feffb86c85d21d7d18 [2021-10-16 03:21:35,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:21:35,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:21:35,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:21:35,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:21:35,847 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:21:35,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-10-16 03:21:35,934 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/data/407bad064/19150fd9975b4790ad2fa72e6e2c5562/FLAG381f9e98a [2021-10-16 03:21:36,497 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:21:36,498 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-10-16 03:21:36,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/data/407bad064/19150fd9975b4790ad2fa72e6e2c5562/FLAG381f9e98a [2021-10-16 03:21:36,878 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/data/407bad064/19150fd9975b4790ad2fa72e6e2c5562 [2021-10-16 03:21:36,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:21:36,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:21:36,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:21:36,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:21:36,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:21:36,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:21:36" (1/1) ... [2021-10-16 03:21:36,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b55af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:36, skipping insertion in model container [2021-10-16 03:21:36,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:21:36" (1/1) ... [2021-10-16 03:21:36,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:21:36,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:21:37,132 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-10-16 03:21:37,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:21:37,144 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:21:37,170 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-10-16 03:21:37,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:21:37,186 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:21:37,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:37 WrapperNode [2021-10-16 03:21:37,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:21:37,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:21:37,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:21:37,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:21:37,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:37" (1/1) ... [2021-10-16 03:21:37,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:37" (1/1) ... [2021-10-16 03:21:37,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:21:37,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:21:37,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:21:37,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:21:37,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:37" (1/1) ... [2021-10-16 03:21:37,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:37" (1/1) ... [2021-10-16 03:21:37,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:37" (1/1) ... [2021-10-16 03:21:37,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:37" (1/1) ... [2021-10-16 03:21:37,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:37" (1/1) ... [2021-10-16 03:21:37,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:37" (1/1) ... [2021-10-16 03:21:37,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:37" (1/1) ... [2021-10-16 03:21:37,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:21:37,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:21:37,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:21:37,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:21:37,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:37" (1/1) ... [2021-10-16 03:21:37,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:21:37,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:21:37,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:21:37,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:21:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:21:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:21:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 03:21:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:21:37,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:21:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:21:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:21:38,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:21:38,053 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-16 03:21:38,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:21:38 BoogieIcfgContainer [2021-10-16 03:21:38,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:21:38,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:21:38,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:21:38,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:21:38,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:21:36" (1/3) ... [2021-10-16 03:21:38,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e34938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:21:38, skipping insertion in model container [2021-10-16 03:21:38,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:37" (2/3) ... [2021-10-16 03:21:38,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e34938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:21:38, skipping insertion in model container [2021-10-16 03:21:38,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:21:38" (3/3) ... [2021-10-16 03:21:38,066 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2021-10-16 03:21:38,075 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:21:38,075 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:21:38,147 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:21:38,156 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:21:38,156 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:21:38,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:38,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:21:38,185 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:38,185 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:38,186 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:38,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:38,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1347970808, now seen corresponding path program 1 times [2021-10-16 03:21:38,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:21:38,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919297790] [2021-10-16 03:21:38,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:38,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:21:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:38,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:21:38,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919297790] [2021-10-16 03:21:38,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919297790] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:38,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:38,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:21:38,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394890307] [2021-10-16 03:21:38,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:21:38,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:21:38,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:21:38,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:21:38,459 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:38,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:38,479 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2021-10-16 03:21:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:21:38,481 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 03:21:38,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:38,490 INFO L225 Difference]: With dead ends: 35 [2021-10-16 03:21:38,490 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 03:21:38,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:21:38,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 03:21:38,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 03:21:38,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-16 03:21:38,532 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2021-10-16 03:21:38,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:38,533 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-16 03:21:38,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:38,533 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-16 03:21:38,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:21:38,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:38,534 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:38,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:21:38,535 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:38,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:38,538 INFO L82 PathProgramCache]: Analyzing trace with hash 126778065, now seen corresponding path program 1 times [2021-10-16 03:21:38,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:21:38,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675336258] [2021-10-16 03:21:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:38,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:21:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:21:38,606 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:21:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:21:38,671 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 03:21:38,672 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:21:38,674 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:21:38,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:21:38,682 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:21:38,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:21:38 BoogieIcfgContainer [2021-10-16 03:21:38,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:21:38,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:21:38,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:21:38,713 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:21:38,714 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:21:38" (3/4) ... [2021-10-16 03:21:38,717 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 03:21:38,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:21:38,720 INFO L168 Benchmark]: Toolchain (without parser) took 1836.17 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 64.4 MB in the beginning and 86.9 MB in the end (delta: -22.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:21:38,720 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory was 81.4 MB in the beginning and 81.3 MB in the end (delta: 67.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:21:38,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.60 ms. Allocated memory is still 102.8 MB. Free memory was 64.3 MB in the beginning and 76.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:38,722 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.35 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 74.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:38,722 INFO L168 Benchmark]: Boogie Preprocessor took 33.03 ms. Allocated memory is still 102.8 MB. Free memory was 74.8 MB in the beginning and 73.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:21:38,723 INFO L168 Benchmark]: RCFGBuilder took 791.36 ms. Allocated memory is still 102.8 MB. Free memory was 73.4 MB in the beginning and 50.0 MB in the end (delta: 23.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:38,724 INFO L168 Benchmark]: TraceAbstraction took 655.01 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 49.4 MB in the beginning and 87.7 MB in the end (delta: -38.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:21:38,724 INFO L168 Benchmark]: Witness Printer took 4.95 ms. Allocated memory is still 123.7 MB. Free memory was 87.7 MB in the beginning and 86.9 MB in the end (delta: 783.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:38,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory was 81.4 MB in the beginning and 81.3 MB in the end (delta: 67.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.60 ms. Allocated memory is still 102.8 MB. Free memory was 64.3 MB in the beginning and 76.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.35 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 74.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.03 ms. Allocated memory is still 102.8 MB. Free memory was 74.8 MB in the beginning and 73.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 791.36 ms. Allocated memory is still 102.8 MB. Free memory was 73.4 MB in the beginning and 50.0 MB in the end (delta: 23.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 655.01 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 49.4 MB in the beginning and 87.7 MB in the end (delta: -38.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.95 ms. Allocated memory is still 123.7 MB. Free memory was 87.7 MB in the beginning and 86.9 MB in the end (delta: 783.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 87]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 86, overapproximation of someUnaryDOUBLEoperation at line 81. Possible FailurePath: [L81] double x = -0.0; [L82] double y = 0.0; [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 536.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 18.1ms, AutomataDifference: 53.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.7ms SsaConstructionTime, 89.8ms SatisfiabilityAnalysisTime, 88.5ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2021-10-16 03:21:38,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:21:41,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:21:41,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:21:41,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:21:41,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:21:41,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:21:41,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:21:41,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:21:41,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:21:41,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:21:41,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:21:41,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:21:41,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:21:41,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:21:41,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:21:41,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:21:41,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:21:41,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:21:41,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:21:41,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:21:41,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:21:41,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:21:41,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:21:41,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:21:41,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:21:41,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:21:41,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:21:41,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:21:41,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:21:41,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:21:41,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:21:41,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:21:41,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:21:41,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:21:41,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:21:41,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:21:41,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:21:41,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:21:41,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:21:41,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:21:41,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:21:41,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:21:41,469 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:21:41,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:21:41,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:21:41,471 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:21:41,471 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:21:41,471 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:21:41,472 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:21:41,472 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:21:41,472 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:21:41,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:21:41,475 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:21:41,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:21:41,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:21:41,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:21:41,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:21:41,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:21:41,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:21:41,476 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:21:41,476 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:21:41,476 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:21:41,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:21:41,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:21:41,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:21:41,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:21:41,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:21:41,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:21:41,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:21:41,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:21:41,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:21:41,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:21:41,479 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:21:41,479 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:21:41,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:21:41,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:21:41,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:21:41,480 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_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f3104f6bf674f4cf2d86feffb86c85d21d7d18 [2021-10-16 03:21:41,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:21:41,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:21:41,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:21:41,918 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:21:41,919 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:21:41,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-10-16 03:21:42,008 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/data/aa70e2bff/3b690f35b17640549e303f04ef6619b4/FLAG6ebc9cad0 [2021-10-16 03:21:42,570 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:21:42,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-10-16 03:21:42,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/data/aa70e2bff/3b690f35b17640549e303f04ef6619b4/FLAG6ebc9cad0 [2021-10-16 03:21:42,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/data/aa70e2bff/3b690f35b17640549e303f04ef6619b4 [2021-10-16 03:21:42,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:21:42,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:21:42,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:21:42,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:21:42,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:21:42,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:21:42" (1/1) ... [2021-10-16 03:21:42,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40fdc454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:42, skipping insertion in model container [2021-10-16 03:21:42,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:21:42" (1/1) ... [2021-10-16 03:21:42,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:21:42,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:21:43,214 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-10-16 03:21:43,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:21:43,267 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:21:43,337 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-10-16 03:21:43,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:21:43,368 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:21:43,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:43 WrapperNode [2021-10-16 03:21:43,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:21:43,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:21:43,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:21:43,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:21:43,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:43" (1/1) ... [2021-10-16 03:21:43,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:43" (1/1) ... [2021-10-16 03:21:43,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:21:43,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:21:43,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:21:43,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:21:43,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:43" (1/1) ... [2021-10-16 03:21:43,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:43" (1/1) ... [2021-10-16 03:21:43,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:43" (1/1) ... [2021-10-16 03:21:43,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:43" (1/1) ... [2021-10-16 03:21:43,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:43" (1/1) ... [2021-10-16 03:21:43,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:43" (1/1) ... [2021-10-16 03:21:43,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:43" (1/1) ... [2021-10-16 03:21:43,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:21:43,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:21:43,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:21:43,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:21:43,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:43" (1/1) ... [2021-10-16 03:21:43,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:21:43,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:21:43,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:21:43,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:21:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-16 03:21:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:21:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:21:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:21:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:21:43,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:21:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:21:44,007 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:21:44,007 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-16 03:21:44,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:21:44 BoogieIcfgContainer [2021-10-16 03:21:44,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:21:44,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:21:44,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:21:44,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:21:44,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:21:42" (1/3) ... [2021-10-16 03:21:44,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3958200b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:21:44, skipping insertion in model container [2021-10-16 03:21:44,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:21:43" (2/3) ... [2021-10-16 03:21:44,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3958200b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:21:44, skipping insertion in model container [2021-10-16 03:21:44,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:21:44" (3/3) ... [2021-10-16 03:21:44,019 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2021-10-16 03:21:44,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:21:44,026 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:21:44,078 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:21:44,085 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:21:44,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:21:44,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 03:21:44,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:44,126 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:44,126 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:44,133 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-10-16 03:21:44,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:44,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661009960] [2021-10-16 03:21:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:44,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:44,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:44,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:44,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:21:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:44,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 03:21:44,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:44,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:44,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:21:44,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661009960] [2021-10-16 03:21:44,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661009960] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:44,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:44,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:21:44,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334520690] [2021-10-16 03:21:44,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:21:44,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:21:44,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:21:44,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:21:44,500 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:44,554 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-10-16 03:21:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:21:44,556 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 03:21:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:44,566 INFO L225 Difference]: With dead ends: 62 [2021-10-16 03:21:44,566 INFO L226 Difference]: Without dead ends: 29 [2021-10-16 03:21:44,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:21:44,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-16 03:21:44,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-16 03:21:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-10-16 03:21:44,612 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-10-16 03:21:44,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:44,613 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-10-16 03:21:44,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:44,614 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-10-16 03:21:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:21:44,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:44,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:44,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:44,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:21:44,829 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:44,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:44,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-10-16 03:21:44,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:44,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892677318] [2021-10-16 03:21:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:44,832 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:44,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:44,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:44,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:21:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:44,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:21:44,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:45,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:45,102 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:21:45,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892677318] [2021-10-16 03:21:45,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892677318] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:45,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:45,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:21:45,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202836955] [2021-10-16 03:21:45,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:21:45,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:21:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:21:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:21:45,106 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:45,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:45,213 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2021-10-16 03:21:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:21:45,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 03:21:45,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:45,215 INFO L225 Difference]: With dead ends: 68 [2021-10-16 03:21:45,216 INFO L226 Difference]: Without dead ends: 59 [2021-10-16 03:21:45,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 60.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:21:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-16 03:21:45,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2021-10-16 03:21:45,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:45,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-16 03:21:45,225 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-10-16 03:21:45,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:45,225 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-16 03:21:45,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:45,226 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-16 03:21:45,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 03:21:45,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:45,227 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:45,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:45,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:21:45,441 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:45,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:45,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2021-10-16 03:21:45,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:45,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103918823] [2021-10-16 03:21:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:45,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:45,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:45,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:45,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:21:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:45,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 03:21:45,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:45,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:46,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:21:46,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103918823] [2021-10-16 03:21:46,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103918823] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:46,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:46,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:21:46,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083696671] [2021-10-16 03:21:46,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:21:46,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:21:46,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:21:46,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:21:46,056 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:46,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:46,177 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2021-10-16 03:21:46,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:21:46,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-16 03:21:46,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:46,179 INFO L225 Difference]: With dead ends: 52 [2021-10-16 03:21:46,179 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 03:21:46,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:21:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 03:21:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-16 03:21:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:46,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-10-16 03:21:46,185 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2021-10-16 03:21:46,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:46,186 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-10-16 03:21:46,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-10-16 03:21:46,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 03:21:46,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:46,187 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:46,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:46,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:21:46,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:46,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:46,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2021-10-16 03:21:46,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:46,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902659274] [2021-10-16 03:21:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:46,407 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:46,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:46,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:46,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:21:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:46,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:21:46,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:46,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:46,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:21:46,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902659274] [2021-10-16 03:21:46,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902659274] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:46,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:46,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:21:46,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862878193] [2021-10-16 03:21:46,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:21:46,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:21:46,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:21:46,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:21:46,626 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:46,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:46,698 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2021-10-16 03:21:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:21:46,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-16 03:21:46,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:46,700 INFO L225 Difference]: With dead ends: 65 [2021-10-16 03:21:46,700 INFO L226 Difference]: Without dead ends: 56 [2021-10-16 03:21:46,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:21:46,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-16 03:21:46,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2021-10-16 03:21:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:46,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-10-16 03:21:46,708 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2021-10-16 03:21:46,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:46,709 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-10-16 03:21:46,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:46,709 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-10-16 03:21:46,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 03:21:46,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:46,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:46,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 03:21:46,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:21:46,912 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:46,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:46,913 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2021-10-16 03:21:46,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:46,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085012141] [2021-10-16 03:21:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:46,914 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:46,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:46,915 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:46,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:21:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:47,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:21:47,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:47,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:47,393 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:21:47,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085012141] [2021-10-16 03:21:47,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085012141] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:47,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:47,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:21:47,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251943169] [2021-10-16 03:21:47,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:21:47,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:21:47,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:21:47,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:21:47,396 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:47,421 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2021-10-16 03:21:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:21:47,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 03:21:47,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:47,423 INFO L225 Difference]: With dead ends: 40 [2021-10-16 03:21:47,423 INFO L226 Difference]: Without dead ends: 30 [2021-10-16 03:21:47,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:21:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-16 03:21:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-16 03:21:47,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:47,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-10-16 03:21:47,429 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2021-10-16 03:21:47,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:47,430 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-10-16 03:21:47,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:47,430 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-10-16 03:21:47,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 03:21:47,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:47,431 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:47,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:47,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:21:47,648 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:47,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:47,648 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2021-10-16 03:21:47,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:47,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299533010] [2021-10-16 03:21:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:47,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:47,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:47,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:47,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 03:21:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:47,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:21:47,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:47,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:48,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:48,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:21:48,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299533010] [2021-10-16 03:21:48,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299533010] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:48,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:48,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-16 03:21:48,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701686834] [2021-10-16 03:21:48,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:21:48,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:21:48,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:21:48,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:21:48,055 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:48,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:48,201 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2021-10-16 03:21:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:21:48,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 03:21:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:48,203 INFO L225 Difference]: With dead ends: 42 [2021-10-16 03:21:48,203 INFO L226 Difference]: Without dead ends: 39 [2021-10-16 03:21:48,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 118.4ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-16 03:21:48,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-16 03:21:48,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-10-16 03:21:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-10-16 03:21:48,208 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2021-10-16 03:21:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:48,209 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-10-16 03:21:48,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:48,209 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-10-16 03:21:48,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 03:21:48,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:48,216 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:48,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-16 03:21:48,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:21:48,429 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:48,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:48,430 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2021-10-16 03:21:48,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:48,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023576243] [2021-10-16 03:21:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:48,431 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:48,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:48,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:48,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 03:21:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:48,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 03:21:48,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:48,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:48,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:21:48,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023576243] [2021-10-16 03:21:48,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023576243] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:48,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:48,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 03:21:48,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897655568] [2021-10-16 03:21:48,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:21:48,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:21:48,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:21:48,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:21:48,970 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:49,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:49,045 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-10-16 03:21:49,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:21:49,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-16 03:21:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:49,048 INFO L225 Difference]: With dead ends: 45 [2021-10-16 03:21:49,048 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 03:21:49,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:21:49,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 03:21:49,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-16 03:21:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-16 03:21:49,054 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2021-10-16 03:21:49,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:49,054 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-16 03:21:49,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:49,054 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-16 03:21:49,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 03:21:49,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:49,055 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:49,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:49,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:21:49,269 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:49,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2021-10-16 03:21:49,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:49,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875081216] [2021-10-16 03:21:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:49,270 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:49,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:49,272 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:49,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 03:21:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:49,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 03:21:49,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:49,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:21:50,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:21:50,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875081216] [2021-10-16 03:21:50,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875081216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:50,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:50,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-10-16 03:21:50,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917027682] [2021-10-16 03:21:50,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-16 03:21:50,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:21:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-16 03:21:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-10-16 03:21:50,209 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:50,471 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-16 03:21:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 03:21:50,472 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-16 03:21:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:50,472 INFO L225 Difference]: With dead ends: 27 [2021-10-16 03:21:50,472 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:21:50,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 474.2ms TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-10-16 03:21:50,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:21:50,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:21:50,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:21:50,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-16 03:21:50,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:50,474 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:21:50,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:21:50,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:21:50,476 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:21:50,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:50,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:21:50,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:21:50,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:50,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:50,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:50,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:50,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:50,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:50,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:50,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:21:50,974 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:21:50,975 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:21:50,975 INFO L857 garLoopResultBuilder]: For program point L28-1(lines 28 33) no Hoare annotation was computed. [2021-10-16 03:21:50,975 INFO L853 garLoopResultBuilder]: At program point L28-2(lines 28 33) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= ULTIMATE.start___fpclassify_double_~x .cse0) (= .cse0 ULTIMATE.start_fmax_double_~x) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y))) [2021-10-16 03:21:50,975 INFO L857 garLoopResultBuilder]: For program point L28-3(lines 25 50) no Hoare annotation was computed. [2021-10-16 03:21:50,975 INFO L857 garLoopResultBuilder]: For program point L28-5(lines 28 33) no Hoare annotation was computed. [2021-10-16 03:21:50,976 INFO L853 garLoopResultBuilder]: At program point L28-6(lines 28 33) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y)) [2021-10-16 03:21:50,976 INFO L857 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-10-16 03:21:50,976 INFO L857 garLoopResultBuilder]: For program point L28-7(lines 25 50) no Hoare annotation was computed. [2021-10-16 03:21:50,976 INFO L857 garLoopResultBuilder]: For program point L86-2(lines 86 89) no Hoare annotation was computed. [2021-10-16 03:21:50,976 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 49) no Hoare annotation was computed. [2021-10-16 03:21:50,976 INFO L857 garLoopResultBuilder]: For program point L45-1(lines 45 49) no Hoare annotation was computed. [2021-10-16 03:21:50,976 INFO L857 garLoopResultBuilder]: For program point L87(line 87) no Hoare annotation was computed. [2021-10-16 03:21:50,977 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 55) no Hoare annotation was computed. [2021-10-16 03:21:50,977 INFO L853 garLoopResultBuilder]: At program point L71(lines 62 72) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_double_#res| (_ bv0 32)) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res|) |ULTIMATE.start_main_#t~short15| (exists ((|v_skolemized_q#valueAsBitvector_8| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_8|) ULTIMATE.start___fpclassify_double_~msw~0) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_8|))))) (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x) (exists ((|v_skolemized_q#valueAsBitvector_9| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_9|) ULTIMATE.start___signbit_double_~msw~1) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_9|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_9|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_9|))))) (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y)) [2021-10-16 03:21:50,977 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2021-10-16 03:21:50,977 INFO L857 garLoopResultBuilder]: For program point L38-1(lines 38 49) no Hoare annotation was computed. [2021-10-16 03:21:50,980 INFO L857 garLoopResultBuilder]: For program point L56(lines 56 57) no Hoare annotation was computed. [2021-10-16 03:21:50,980 INFO L857 garLoopResultBuilder]: For program point L65-1(lines 65 69) no Hoare annotation was computed. [2021-10-16 03:21:50,981 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:21:50,981 INFO L853 garLoopResultBuilder]: At program point L65-2(lines 65 69) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res|) |ULTIMATE.start_main_#t~short15| (exists ((|v_skolemized_q#valueAsBitvector_8| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_8|) ULTIMATE.start___fpclassify_double_~msw~0) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_8|))))) (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x) (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y)) [2021-10-16 03:21:50,981 INFO L857 garLoopResultBuilder]: For program point L65-3(lines 65 69) no Hoare annotation was computed. [2021-10-16 03:21:50,981 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 87) no Hoare annotation was computed. [2021-10-16 03:21:50,982 INFO L853 garLoopResultBuilder]: At program point L49(lines 25 50) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) (fp.neg (_ +zero 11 53))) (= ULTIMATE.start___fpclassify_double_~msw~0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|)))) (= ULTIMATE.start___fpclassify_double_~x .cse0) (= .cse0 ULTIMATE.start_fmax_double_~x) (not (= |ULTIMATE.start___fpclassify_double_#res| (_ bv0 32))) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y))) [2021-10-16 03:21:50,982 INFO L853 garLoopResultBuilder]: At program point L49-1(lines 25 50) the Hoare annotation is: (and (exists ((|v_skolemized_q#valueAsBitvector_8| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_8|) ULTIMATE.start___fpclassify_double_~msw~0) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_8|))))) (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (not (= |ULTIMATE.start___fpclassify_double_#res| (_ bv0 32))) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y)) [2021-10-16 03:21:50,982 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2021-10-16 03:21:50,982 INFO L857 garLoopResultBuilder]: For program point L41-1(lines 41 49) no Hoare annotation was computed. [2021-10-16 03:21:50,982 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:21:50,983 INFO L860 garLoopResultBuilder]: At program point L91(lines 74 92) the Hoare annotation is: true [2021-10-16 03:21:50,983 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-10-16 03:21:50,984 INFO L857 garLoopResultBuilder]: For program point L59-2(line 59) no Hoare annotation was computed. [2021-10-16 03:21:50,984 INFO L853 garLoopResultBuilder]: At program point L59-3(lines 52 60) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res|) (exists ((|v_skolemized_q#valueAsBitvector_8| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_8|) ULTIMATE.start___fpclassify_double_~msw~0) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_8|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_8|))))) (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y)) [2021-10-16 03:21:50,990 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:21:51,000 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,001 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,001 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,001 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,011 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,011 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,011 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,011 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,013 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,013 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,013 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,015 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,015 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,015 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,016 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,016 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,021 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,021 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,022 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,022 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,022 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,022 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,023 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,023 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,024 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,024 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,025 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,025 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,025 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,025 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,025 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,035 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,041 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,043 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,049 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,050 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,050 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,051 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,051 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,053 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,053 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:21:51 BoogieIcfgContainer [2021-10-16 03:21:51,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:21:51,054 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:21:51,054 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:21:51,055 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:21:51,055 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:21:44" (3/4) ... [2021-10-16 03:21:51,058 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:21:51,071 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-16 03:21:51,071 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 03:21:51,072 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 03:21:51,072 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:21:51,098 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && msw == v_skolemized_q#valueAsBitvector_7[63:32]) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && !(\result == 0bv32)) && ~Pluszero~LONGDOUBLE() == y [2021-10-16 03:21:51,099 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == \result && (\exists v_skolemized_q#valueAsBitvector_8 : bv64 :: v_skolemized_q#valueAsBitvector_8[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == y [2021-10-16 03:21:51,100 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~Pluszero~LONGDOUBLE() == \result && aux-res == 0.0 && __signbit_double(res) == 0-aux) && (\exists v_skolemized_q#valueAsBitvector_8 : bv64 :: v_skolemized_q#valueAsBitvector_8[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == x) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == y [2021-10-16 03:21:51,100 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\exists v_skolemized_q#valueAsBitvector_8 : bv64 :: v_skolemized_q#valueAsBitvector_8[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0])) && ~Pluszero~LONGDOUBLE() == x) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && !(\result == 0bv32)) && ~Pluszero~LONGDOUBLE() == y [2021-10-16 03:21:51,100 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((\result == 0bv32 && ~Pluszero~LONGDOUBLE() == \result) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && (\exists v_skolemized_q#valueAsBitvector_8 : bv64 :: v_skolemized_q#valueAsBitvector_8[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && (\exists v_skolemized_q#valueAsBitvector_9 : bv64 :: v_skolemized_q#valueAsBitvector_9[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_9[63:63], v_skolemized_q#valueAsBitvector_9[62:52], v_skolemized_q#valueAsBitvector_9[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == y [2021-10-16 03:21:51,119 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:21:51,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:21:51,121 INFO L168 Benchmark]: Toolchain (without parser) took 8203.69 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 53.7 MB in the beginning and 52.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:51,122 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 70.1 MB in the beginning and 70.0 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:21:51,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 450.56 ms. Allocated memory is still 88.1 MB. Free memory was 53.5 MB in the beginning and 70.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:51,123 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.54 ms. Allocated memory is still 88.1 MB. Free memory was 70.7 MB in the beginning and 68.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:51,123 INFO L168 Benchmark]: Boogie Preprocessor took 82.54 ms. Allocated memory is still 88.1 MB. Free memory was 68.8 MB in the beginning and 67.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:21:51,124 INFO L168 Benchmark]: RCFGBuilder took 471.88 ms. Allocated memory is still 88.1 MB. Free memory was 67.0 MB in the beginning and 53.2 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:51,124 INFO L168 Benchmark]: TraceAbstraction took 7042.02 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 52.7 MB in the beginning and 56.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:51,125 INFO L168 Benchmark]: Witness Printer took 65.67 ms. Allocated memory is still 121.6 MB. Free memory was 56.8 MB in the beginning and 52.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:21:51,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 70.1 MB in the beginning and 70.0 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 450.56 ms. Allocated memory is still 88.1 MB. Free memory was 53.5 MB in the beginning and 70.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.54 ms. Allocated memory is still 88.1 MB. Free memory was 70.7 MB in the beginning and 68.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.54 ms. Allocated memory is still 88.1 MB. Free memory was 68.8 MB in the beginning and 67.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 471.88 ms. Allocated memory is still 88.1 MB. Free memory was 67.0 MB in the beginning and 53.2 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7042.02 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 52.7 MB in the beginning and 56.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * Witness Printer took 65.67 ms. Allocated memory is still 121.6 MB. Free memory was 56.8 MB in the beginning and 52.7 MB in the end (delta: 4.0 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[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 87]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6913.4ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 39.3ms, AutomataDifference: 926.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 296.2ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 252 SDtfs, 303 SDslu, 522 SDs, 0 SdLazy, 178 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 353.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 906.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 64.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 205 HoareAnnotationTreeSize, 8 FomulaSimplifications, 52 FormulaSimplificationTreeSizeReduction, 79.4ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 30 FormulaSimplificationTreeSizeReductionInter, 208.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 97.8ms SsaConstructionTime, 371.8ms SatisfiabilityAnalysisTime, 2784.3ms InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 32 QuantifiedInterpolants, 1020 SizeOfPredicates, 38 NumberOfNonLiveVariables, 505 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant [2021-10-16 03:21:51,139 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,140 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,140 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,140 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,140 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,141 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,141 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,141 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] Derived loop invariant: ((((\exists v_skolemized_q#valueAsBitvector_8 : bv64 :: v_skolemized_q#valueAsBitvector_8[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0])) && ~Pluszero~LONGDOUBLE() == x) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && !(\result == 0bv32)) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 25]: Loop Invariant [2021-10-16 03:21:51,142 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,142 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,142 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,142 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,143 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,143 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,143 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2021-10-16 03:21:51,143 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] Derived loop invariant: ((((\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && msw == v_skolemized_q#valueAsBitvector_7[63:32]) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && !(\result == 0bv32)) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 62]: Loop Invariant [2021-10-16 03:21:51,144 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,144 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,144 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,144 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,145 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,145 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,145 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,145 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,146 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,146 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,146 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,146 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,147 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,147 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,147 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] [2021-10-16 03:21:51,147 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_9,QUANTIFIED] Derived loop invariant: ((((((((\result == 0bv32 && ~Pluszero~LONGDOUBLE() == \result) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && (\exists v_skolemized_q#valueAsBitvector_8 : bv64 :: v_skolemized_q#valueAsBitvector_8[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && (\exists v_skolemized_q#valueAsBitvector_9 : bv64 :: v_skolemized_q#valueAsBitvector_9[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_9[63:63], v_skolemized_q#valueAsBitvector_9[62:52], v_skolemized_q#valueAsBitvector_9[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 65]: Loop Invariant [2021-10-16 03:21:51,148 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,148 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,148 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,148 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,149 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,149 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,149 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,150 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] Derived loop invariant: ((((((~Pluszero~LONGDOUBLE() == \result && aux-res == 0.0 && __signbit_double(res) == 0-aux) && (\exists v_skolemized_q#valueAsBitvector_8 : bv64 :: v_skolemized_q#valueAsBitvector_8[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == x) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == x && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant [2021-10-16 03:21:51,151 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,151 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,153 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] [2021-10-16 03:21:51,153 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_8,QUANTIFIED] Derived loop invariant: (((~Pluszero~LONGDOUBLE() == \result && (\exists v_skolemized_q#valueAsBitvector_8 : bv64 :: v_skolemized_q#valueAsBitvector_8[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_8[63:63], v_skolemized_q#valueAsBitvector_8[62:52], v_skolemized_q#valueAsBitvector_8[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == y RESULT: Ultimate proved your program to be correct! [2021-10-16 03:21:51,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_340bacb0-94b5-4832-8b1e-572bf7d06476/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...