./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95e4857f2e80c4b2a09349ad506a32e395132bf666c8dc52d9ee1d4dade10d91 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95e4857f2e80c4b2a09349ad506a32e395132bf666c8dc52d9ee1d4dade10d91 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:22:07,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:22:07,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:22:07,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:22:07,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:22:07,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:22:07,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:22:07,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:22:07,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:22:07,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:22:07,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:22:07,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:22:07,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:22:07,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:22:07,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:22:07,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:22:07,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:22:07,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:22:07,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:22:07,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:22:07,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:22:07,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:22:07,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:22:07,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:22:07,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:22:07,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:22:07,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:22:07,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:22:07,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:22:07,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:22:07,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:22:07,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:22:07,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:22:07,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:22:07,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:22:07,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:22:07,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:22:07,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:22:07,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:22:07,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:22:07,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:22:07,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:22:07,556 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:22:07,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:22:07,557 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:22:07,557 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:22:07,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:22:07,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:22:07,566 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:22:07,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:22:07,566 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:22:07,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:22:07,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:22:07,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:22:07,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:22:07,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:22:07,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:22:07,569 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:22:07,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:22:07,569 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:22:07,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:22:07,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:22:07,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:22:07,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:22:07,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:22:07,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:22:07,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:22:07,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:22:07,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:22:07,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:22:07,572 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:22:07,572 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:22:07,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:22:07,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:22:07,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95e4857f2e80c4b2a09349ad506a32e395132bf666c8dc52d9ee1d4dade10d91 [2021-10-28 23:22:07,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:22:07,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:22:07,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:22:07,944 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:22:07,945 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:22:07,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2021-10-28 23:22:08,025 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/data/2f6885e2a/7ece5298ff124ed6a0d879828dc14471/FLAGc84e2257e [2021-10-28 23:22:08,533 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:22:08,534 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2021-10-28 23:22:08,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/data/2f6885e2a/7ece5298ff124ed6a0d879828dc14471/FLAGc84e2257e [2021-10-28 23:22:08,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/data/2f6885e2a/7ece5298ff124ed6a0d879828dc14471 [2021-10-28 23:22:08,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:22:08,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:22:08,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:22:08,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:22:08,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:22:08,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:22:08" (1/1) ... [2021-10-28 23:22:08,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c5b8e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:08, skipping insertion in model container [2021-10-28 23:22:08,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:22:08" (1/1) ... [2021-10-28 23:22:08,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:22:08,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:22:09,248 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_fc6a377c-fce3-472f-8065-3dca44b50c7d/sv-benchmarks/c/float-newlib/float_req_bl_1230.c[1411,1424] [2021-10-28 23:22:09,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:22:09,260 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:22:09,284 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_fc6a377c-fce3-472f-8065-3dca44b50c7d/sv-benchmarks/c/float-newlib/float_req_bl_1230.c[1411,1424] [2021-10-28 23:22:09,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:22:09,301 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:22:09,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:09 WrapperNode [2021-10-28 23:22:09,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:22:09,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:22:09,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:22:09,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:22:09,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:09" (1/1) ... [2021-10-28 23:22:09,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:09" (1/1) ... [2021-10-28 23:22:09,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:22:09,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:22:09,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:22:09,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:22:09,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:09" (1/1) ... [2021-10-28 23:22:09,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:09" (1/1) ... [2021-10-28 23:22:09,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:09" (1/1) ... [2021-10-28 23:22:09,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:09" (1/1) ... [2021-10-28 23:22:09,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:09" (1/1) ... [2021-10-28 23:22:09,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:09" (1/1) ... [2021-10-28 23:22:09,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:09" (1/1) ... [2021-10-28 23:22:09,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:22:09,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:22:09,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:22:09,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:22:09,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:09" (1/1) ... [2021-10-28 23:22:09,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:22:09,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:09,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:09,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:22:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:22:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:22:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-28 23:22:09,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:22:09,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:22:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:22:09,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:22:09,861 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:22:09,861 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 23:22:09,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:22:09 BoogieIcfgContainer [2021-10-28 23:22:09,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:22:09,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:22:09,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:22:09,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:22:09,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:22:08" (1/3) ... [2021-10-28 23:22:09,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c60006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:22:09, skipping insertion in model container [2021-10-28 23:22:09,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:09" (2/3) ... [2021-10-28 23:22:09,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c60006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:22:09, skipping insertion in model container [2021-10-28 23:22:09,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:22:09" (3/3) ... [2021-10-28 23:22:09,884 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2021-10-28 23:22:09,891 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:22:09,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:22:09,967 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:22:09,974 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-10-28 23:22:09,974 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:22:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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) [2021-10-28 23:22:10,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:22:10,003 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:10,004 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:10,004 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:22:10,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:10,011 INFO L85 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-10-28 23:22:10,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:10,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073360601] [2021-10-28 23:22:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:10,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:10,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:10,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073360601] [2021-10-28 23:22:10,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073360601] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:10,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:10,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:22:10,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667093088] [2021-10-28 23:22:10,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:22:10,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:10,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:22:10,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:22:10,189 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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) [2021-10-28 23:22:10,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:10,206 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-10-28 23:22:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:22:10,207 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 [2021-10-28 23:22:10,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:10,216 INFO L225 Difference]: With dead ends: 54 [2021-10-28 23:22:10,216 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 23:22:10,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:22:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 23:22:10,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-28 23:22:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 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) [2021-10-28 23:22:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-10-28 23:22:10,252 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-10-28 23:22:10,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:10,253 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-10-28 23:22:10,253 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) [2021-10-28 23:22:10,253 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-10-28 23:22:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:22:10,254 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:10,255 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:10,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:22:10,255 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:22:10,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:10,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-10-28 23:22:10,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:10,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055169831] [2021-10-28 23:22:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:10,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:10,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:10,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055169831] [2021-10-28 23:22:10,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055169831] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:10,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:10,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:22:10,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324776611] [2021-10-28 23:22:10,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:22:10,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:22:10,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:22:10,349 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-28 23:22:10,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:10,411 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-10-28 23:22:10,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:22:10,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 [2021-10-28 23:22:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:10,413 INFO L225 Difference]: With dead ends: 41 [2021-10-28 23:22:10,413 INFO L226 Difference]: Without dead ends: 36 [2021-10-28 23:22:10,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:22:10,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-28 23:22:10,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-10-28 23:22:10,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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) [2021-10-28 23:22:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-28 23:22:10,420 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-10-28 23:22:10,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:10,421 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-28 23:22:10,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-28 23:22:10,421 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-28 23:22:10,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:22:10,422 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:10,422 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:10,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:22:10,423 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:22:10,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:10,424 INFO L85 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2021-10-28 23:22:10,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:10,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818664686] [2021-10-28 23:22:10,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:10,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:10,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:10,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818664686] [2021-10-28 23:22:10,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818664686] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:10,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:10,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:22:10,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161886085] [2021-10-28 23:22:10,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:22:10,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:10,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:22:10,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:22:10,484 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-10-28 23:22:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:10,526 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-28 23:22:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:22:10,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-10-28 23:22:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:10,528 INFO L225 Difference]: With dead ends: 43 [2021-10-28 23:22:10,529 INFO L226 Difference]: Without dead ends: 38 [2021-10-28 23:22:10,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:22:10,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-28 23:22:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-28 23:22:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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) [2021-10-28 23:22:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-28 23:22:10,534 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2021-10-28 23:22:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:10,535 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-28 23:22:10,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-10-28 23:22:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-28 23:22:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:22:10,536 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:10,536 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:10,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:22:10,537 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:22:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:10,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2021-10-28 23:22:10,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:10,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912263683] [2021-10-28 23:22:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:10,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:10,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:10,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912263683] [2021-10-28 23:22:10,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912263683] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:10,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:10,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:22:10,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275323941] [2021-10-28 23:22:10,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:22:10,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:10,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:22:10,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:22:10,626 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-28 23:22:10,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:10,670 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-10-28 23:22:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:22:10,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-10-28 23:22:10,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:10,672 INFO L225 Difference]: With dead ends: 45 [2021-10-28 23:22:10,672 INFO L226 Difference]: Without dead ends: 40 [2021-10-28 23:22:10,673 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:22:10,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-28 23:22:10,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2021-10-28 23:22:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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) [2021-10-28 23:22:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-28 23:22:10,679 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2021-10-28 23:22:10,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:10,679 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-28 23:22:10,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-28 23:22:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-28 23:22:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:22:10,681 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:10,681 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:10,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:22:10,682 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:22:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:10,683 INFO L85 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2021-10-28 23:22:10,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:10,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632602679] [2021-10-28 23:22:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:10,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:10,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:22:10,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632602679] [2021-10-28 23:22:10,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632602679] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:10,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:10,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:22:10,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946741700] [2021-10-28 23:22:10,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:22:10,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:22:10,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:22:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:22:10,759 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-10-28 23:22:10,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:10,829 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-28 23:22:10,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:22:10,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 14 [2021-10-28 23:22:10,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:10,833 INFO L225 Difference]: With dead ends: 43 [2021-10-28 23:22:10,833 INFO L226 Difference]: Without dead ends: 38 [2021-10-28 23:22:10,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:22:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-28 23:22:10,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-28 23:22:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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) [2021-10-28 23:22:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-28 23:22:10,839 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2021-10-28 23:22:10,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:10,840 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-28 23:22:10,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-10-28 23:22:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-28 23:22:10,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:22:10,841 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:10,841 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:10,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:22:10,842 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:22:10,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:10,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-10-28 23:22:10,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:22:10,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683966795] [2021-10-28 23:22:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:10,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:22:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:10,889 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:22:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:22:10,966 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:22:10,967 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:22:10,969 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:22:10,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:22:10,976 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-28 23:22:10,979 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:22:11,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:22:11 BoogieIcfgContainer [2021-10-28 23:22:11,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:22:11,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:22:11,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:22:11,021 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:22:11,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:22:09" (3/4) ... [2021-10-28 23:22:11,033 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:22:11,034 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:22:11,037 INFO L168 Benchmark]: Toolchain (without parser) took 2097.40 ms. Allocated memory was 121.6 MB in the beginning and 180.4 MB in the end (delta: 58.7 MB). Free memory was 80.0 MB in the beginning and 138.2 MB in the end (delta: -58.1 MB). Peak memory consumption was 894.7 kB. Max. memory is 16.1 GB. [2021-10-28 23:22:11,042 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 121.6 MB. Free memory was 96.8 MB in the beginning and 96.7 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:22:11,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.78 ms. Allocated memory is still 121.6 MB. Free memory was 79.9 MB in the beginning and 94.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:11,045 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.79 ms. Allocated memory is still 121.6 MB. Free memory was 94.4 MB in the beginning and 92.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:11,046 INFO L168 Benchmark]: Boogie Preprocessor took 57.49 ms. Allocated memory is still 121.6 MB. Free memory was 92.3 MB in the beginning and 91.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:11,047 INFO L168 Benchmark]: RCFGBuilder took 458.18 ms. Allocated memory is still 121.6 MB. Free memory was 91.3 MB in the beginning and 78.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:11,050 INFO L168 Benchmark]: TraceAbstraction took 1154.12 ms. Allocated memory was 121.6 MB in the beginning and 180.4 MB in the end (delta: 58.7 MB). Free memory was 78.2 MB in the beginning and 139.2 MB in the end (delta: -61.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:22:11,052 INFO L168 Benchmark]: Witness Printer took 13.64 ms. Allocated memory is still 180.4 MB. Free memory was 139.2 MB in the beginning and 138.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:11,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 121.6 MB. Free memory was 96.8 MB in the beginning and 96.7 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 359.78 ms. Allocated memory is still 121.6 MB. Free memory was 79.9 MB in the beginning and 94.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.79 ms. Allocated memory is still 121.6 MB. Free memory was 94.4 MB in the beginning and 92.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.49 ms. Allocated memory is still 121.6 MB. Free memory was 92.3 MB in the beginning and 91.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 458.18 ms. Allocated memory is still 121.6 MB. Free memory was 91.3 MB in the beginning and 78.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1154.12 ms. Allocated memory was 121.6 MB in the beginning and 180.4 MB in the end (delta: 58.7 MB). Free memory was 78.2 MB in the beginning and 139.2 MB in the end (delta: -61.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 13.64 ms. Allocated memory is still 180.4 MB. Free memory was 139.2 MB in the beginning and 138.2 MB in the end (delta: 1.1 MB). 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 56. Possible FailurePath: [L56] float x = 0.0f / 0.0f; [L57] float y = 0.0f / 0.0f; [L14] __uint32_t w; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L24-L25] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L27-L28] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L30] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L33] return 0; [L37] COND TRUE __fpclassify_float(x) == 0 [L38] return y; [L58] float res = fmin_float(x, y); [L46] return x != x; [L60] COND TRUE !isnan_float(res) [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2021-10-28 23:22:11,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/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-b2eff8b [2021-10-28 23:22:13,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:22:13,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:22:13,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:22:13,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:22:13,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:22:13,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:22:13,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:22:13,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:22:13,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:22:13,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:22:13,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:22:13,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:22:13,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:22:13,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:22:13,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:22:13,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:22:13,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:22:13,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:22:13,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:22:13,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:22:13,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:22:13,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:22:13,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:22:13,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:22:13,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:22:13,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:22:13,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:22:13,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:22:13,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:22:13,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:22:13,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:22:13,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:22:13,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:22:13,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:22:13,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:22:13,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:22:13,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:22:13,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:22:13,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:22:13,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:22:13,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:22:13,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:22:13,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:22:13,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:22:13,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:22:13,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:22:13,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:22:13,761 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:22:13,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:22:13,762 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:22:13,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:22:13,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:22:13,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:22:13,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:22:13,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:22:13,764 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:22:13,764 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:22:13,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:22:13,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:22:13,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:22:13,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:22:13,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:22:13,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:22:13,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:22:13,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:22:13,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:22:13,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:22:13,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:22:13,768 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:22:13,769 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:22:13,769 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:22:13,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:22:13,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:22:13,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:22:13,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:22:13,771 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_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95e4857f2e80c4b2a09349ad506a32e395132bf666c8dc52d9ee1d4dade10d91 [2021-10-28 23:22:14,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:22:14,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:22:14,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:22:14,238 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:22:14,238 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:22:14,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2021-10-28 23:22:14,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/data/b0247ae1f/3eb2bfff264d4511a31855d8167b9ded/FLAGbf5da4736 [2021-10-28 23:22:14,975 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:22:14,977 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2021-10-28 23:22:14,985 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/data/b0247ae1f/3eb2bfff264d4511a31855d8167b9ded/FLAGbf5da4736 [2021-10-28 23:22:15,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/data/b0247ae1f/3eb2bfff264d4511a31855d8167b9ded [2021-10-28 23:22:15,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:22:15,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:22:15,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:22:15,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:22:15,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:22:15,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:22:15" (1/1) ... [2021-10-28 23:22:15,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5bed48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15, skipping insertion in model container [2021-10-28 23:22:15,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:22:15" (1/1) ... [2021-10-28 23:22:15,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:22:15,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:22:15,288 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_fc6a377c-fce3-472f-8065-3dca44b50c7d/sv-benchmarks/c/float-newlib/float_req_bl_1230.c[1411,1424] [2021-10-28 23:22:15,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:22:15,322 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:22:15,363 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_fc6a377c-fce3-472f-8065-3dca44b50c7d/sv-benchmarks/c/float-newlib/float_req_bl_1230.c[1411,1424] [2021-10-28 23:22:15,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:22:15,386 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:22:15,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15 WrapperNode [2021-10-28 23:22:15,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:22:15,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:22:15,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:22:15,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:22:15,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15" (1/1) ... [2021-10-28 23:22:15,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15" (1/1) ... [2021-10-28 23:22:15,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:22:15,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:22:15,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:22:15,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:22:15,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15" (1/1) ... [2021-10-28 23:22:15,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15" (1/1) ... [2021-10-28 23:22:15,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15" (1/1) ... [2021-10-28 23:22:15,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15" (1/1) ... [2021-10-28 23:22:15,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15" (1/1) ... [2021-10-28 23:22:15,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15" (1/1) ... [2021-10-28 23:22:15,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15" (1/1) ... [2021-10-28 23:22:15,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:22:15,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:22:15,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:22:15,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:22:15,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15" (1/1) ... [2021-10-28 23:22:15,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:22:15,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:22:15,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:22:15,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:22:15,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:22:15,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:22:15,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:22:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:22:15,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:22:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-28 23:22:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:22:15,970 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:22:15,971 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 23:22:15,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:22:15 BoogieIcfgContainer [2021-10-28 23:22:15,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:22:15,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:22:15,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:22:15,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:22:15,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:22:15" (1/3) ... [2021-10-28 23:22:15,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53008676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:22:15, skipping insertion in model container [2021-10-28 23:22:15,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:22:15" (2/3) ... [2021-10-28 23:22:15,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53008676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:22:15, skipping insertion in model container [2021-10-28 23:22:15,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:22:15" (3/3) ... [2021-10-28 23:22:15,981 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2021-10-28 23:22:15,986 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:22:15,987 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:22:16,035 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:22:16,042 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-10-28 23:22:16,042 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:22:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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) [2021-10-28 23:22:16,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:22:16,062 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:16,063 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:16,064 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:22:16,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-10-28 23:22:16,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:22:16,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886497413] [2021-10-28 23:22:16,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:16,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:22:16,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:22:16,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:22:16,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:22:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:16,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:22:16,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:16,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:22:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:16,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:22:16,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886497413] [2021-10-28 23:22:16,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886497413] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:16,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:16,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:22:16,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79015978] [2021-10-28 23:22:16,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:22:16,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:22:16,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:22:16,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:22:16,460 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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) [2021-10-28 23:22:16,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:16,473 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-10-28 23:22:16,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:22:16,475 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 [2021-10-28 23:22:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:16,484 INFO L225 Difference]: With dead ends: 54 [2021-10-28 23:22:16,484 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 23:22:16,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:22:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 23:22:16,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-28 23:22:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 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) [2021-10-28 23:22:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-10-28 23:22:16,519 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-10-28 23:22:16,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:16,519 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-10-28 23:22:16,520 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) [2021-10-28 23:22:16,520 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-10-28 23:22:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:22:16,521 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:16,521 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:16,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:16,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:22:16,734 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:22:16,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:16,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-10-28 23:22:16,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:22:16,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533873828] [2021-10-28 23:22:16,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:16,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:22:16,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:22:16,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:22:16,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:22:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:16,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:22:16,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:16,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:22:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:17,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:22:17,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533873828] [2021-10-28 23:22:17,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533873828] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:17,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:17,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 23:22:17,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940113428] [2021-10-28 23:22:17,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:22:17,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:22:17,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:22:17,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:22:17,023 INFO L87 Difference]: Start difference. First operand 25 states and 35 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) [2021-10-28 23:22:17,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:17,134 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2021-10-28 23:22:17,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:22:17,134 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 [2021-10-28 23:22:17,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:17,142 INFO L225 Difference]: With dead ends: 52 [2021-10-28 23:22:17,142 INFO L226 Difference]: Without dead ends: 47 [2021-10-28 23:22:17,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:22:17,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-28 23:22:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-10-28 23:22:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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) [2021-10-28 23:22:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-28 23:22:17,150 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-10-28 23:22:17,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:17,150 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-28 23:22:17,150 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) [2021-10-28 23:22:17,151 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-28 23:22:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:22:17,151 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:17,151 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:17,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:17,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:22:17,365 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:22:17,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:17,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-10-28 23:22:17,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:22:17,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941541356] [2021-10-28 23:22:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:17,368 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:22:17,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:22:17,372 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:22:17,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:22:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:17,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:22:17,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:17,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:22:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:17,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:22:17,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941541356] [2021-10-28 23:22:17,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941541356] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:17,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:17,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-28 23:22:17,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686000709] [2021-10-28 23:22:17,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:22:17,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:22:17,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:22:17,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:22:17,870 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 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) [2021-10-28 23:22:18,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:18,156 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-10-28 23:22:18,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:22:18,158 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 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) Word has length 14 [2021-10-28 23:22:18,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:18,159 INFO L225 Difference]: With dead ends: 36 [2021-10-28 23:22:18,159 INFO L226 Difference]: Without dead ends: 27 [2021-10-28 23:22:18,159 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:22:18,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-28 23:22:18,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-10-28 23:22:18,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 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) [2021-10-28 23:22:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-10-28 23:22:18,164 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-10-28 23:22:18,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:18,164 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-10-28 23:22:18,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 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) [2021-10-28 23:22:18,165 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-10-28 23:22:18,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:22:18,166 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:18,166 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:18,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:18,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:22:18,377 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:22:18,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2021-10-28 23:22:18,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:22:18,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935311898] [2021-10-28 23:22:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:18,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:22:18,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:22:18,381 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:22:18,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:22:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:18,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:22:18,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:18,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:22:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:18,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:22:18,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935311898] [2021-10-28 23:22:18,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935311898] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:18,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:18,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 23:22:18,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34272959] [2021-10-28 23:22:18,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:22:18,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:22:18,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:22:18,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:22:18,583 INFO L87 Difference]: Start difference. First operand 25 states and 33 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) [2021-10-28 23:22:18,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:18,663 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-28 23:22:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:22:18,667 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 [2021-10-28 23:22:18,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:18,668 INFO L225 Difference]: With dead ends: 52 [2021-10-28 23:22:18,668 INFO L226 Difference]: Without dead ends: 47 [2021-10-28 23:22:18,669 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:22:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-28 23:22:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-10-28 23:22:18,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 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) [2021-10-28 23:22:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-10-28 23:22:18,675 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2021-10-28 23:22:18,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:18,675 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-10-28 23:22:18,676 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) [2021-10-28 23:22:18,676 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-10-28 23:22:18,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:22:18,677 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:18,677 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:18,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:18,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:22:18,890 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:22:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:18,891 INFO L85 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2021-10-28 23:22:18,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:22:18,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573005732] [2021-10-28 23:22:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:18,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:22:18,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:22:18,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:22:18,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:22:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:18,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:22:18,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:19,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:22:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:19,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:22:19,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573005732] [2021-10-28 23:22:19,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573005732] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:19,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:19,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-28 23:22:19,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831392719] [2021-10-28 23:22:19,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:22:19,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:22:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:22:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:22:19,450 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-28 23:22:19,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:19,767 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-10-28 23:22:19,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:22:19,773 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 [2021-10-28 23:22:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:19,774 INFO L225 Difference]: With dead ends: 32 [2021-10-28 23:22:19,774 INFO L226 Difference]: Without dead ends: 23 [2021-10-28 23:22:19,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:22:19,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-28 23:22:19,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-28 23:22:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 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) [2021-10-28 23:22:19,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-28 23:22:19,779 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2021-10-28 23:22:19,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:19,779 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-28 23:22:19,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-10-28 23:22:19,780 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-28 23:22:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:22:19,780 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:22:19,780 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:22:19,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:19,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:22:19,990 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:22:19,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:22:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2021-10-28 23:22:19,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:22:19,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112103422] [2021-10-28 23:22:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:22:19,991 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:22:19,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:22:19,992 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:22:20,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:22:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:22:20,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:22:20,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:22:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:20,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:22:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:22:20,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:22:20,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112103422] [2021-10-28 23:22:20,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112103422] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:22:20,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:22:20,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-28 23:22:20,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746622905] [2021-10-28 23:22:20,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:22:20,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:22:20,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:22:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:22:20,502 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) [2021-10-28 23:22:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:22:20,663 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-28 23:22:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:22:20,663 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) Word has length 19 [2021-10-28 23:22:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:22:20,664 INFO L225 Difference]: With dead ends: 23 [2021-10-28 23:22:20,664 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:22:20,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:22:20,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:22:20,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:22:20,665 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) [2021-10-28 23:22:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:22:20,665 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-28 23:22:20,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:22:20,665 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:22:20,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) [2021-10-28 23:22:20,666 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:22:20,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:22:20,668 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:22:20,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:22:20,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:22:20,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:22:20,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:22:20,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:22:20,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:22:20,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:22:20,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:22:20,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:22:20,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:22:21,136 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 63) no Hoare annotation was computed. [2021-10-28 23:22:21,137 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 33) no Hoare annotation was computed. [2021-10-28 23:22:21,137 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 33) no Hoare annotation was computed. [2021-10-28 23:22:21,137 INFO L860 garLoopResultBuilder]: At program point L65(lines 48 66) the Hoare annotation is: true [2021-10-28 23:22:21,137 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:22:21,137 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:22:21,138 INFO L857 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2021-10-28 23:22:21,138 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:22:21,138 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 33) no Hoare annotation was computed. [2021-10-28 23:22:21,138 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 61) no Hoare annotation was computed. [2021-10-28 23:22:21,138 INFO L857 garLoopResultBuilder]: For program point L24-1(lines 24 33) no Hoare annotation was computed. [2021-10-28 23:22:21,138 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2021-10-28 23:22:21,139 INFO L853 garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) [2021-10-28 23:22:21,139 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 13 34) no Hoare annotation was computed. [2021-10-28 23:22:21,139 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 20) no Hoare annotation was computed. [2021-10-28 23:22:21,139 INFO L853 garLoopResultBuilder]: At program point L16-6(lines 16 20) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) [2021-10-28 23:22:21,139 INFO L857 garLoopResultBuilder]: For program point L16-7(lines 13 34) no Hoare annotation was computed. [2021-10-28 23:22:21,139 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-10-28 23:22:21,140 INFO L853 garLoopResultBuilder]: At program point L33(lines 13 34) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) [2021-10-28 23:22:21,140 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:22:21,140 INFO L853 garLoopResultBuilder]: At program point L33-1(lines 13 34) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)))) (or (and .cse0 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))))) [2021-10-28 23:22:21,140 INFO L853 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmin_float_#res| |ULTIMATE.start_fmin_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmin_float_~y (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-10-28 23:22:21,140 INFO L857 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2021-10-28 23:22:21,141 INFO L857 garLoopResultBuilder]: For program point L42-2(line 42) no Hoare annotation was computed. [2021-10-28 23:22:21,141 INFO L853 garLoopResultBuilder]: At program point L42-3(lines 36 43) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmin_float_#res| |ULTIMATE.start_fmin_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmin_float_~y (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2021-10-28 23:22:21,141 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 33) no Hoare annotation was computed. [2021-10-28 23:22:21,141 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 30 33) no Hoare annotation was computed. [2021-10-28 23:22:21,141 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-10-28 23:22:21,144 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-28 23:22:21,146 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:22:21,159 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:22:21,160 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:22:21,161 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:22:21,162 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:22:21,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:22:21 BoogieIcfgContainer [2021-10-28 23:22:21,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:22:21,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:22:21,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:22:21,165 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:22:21,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:22:15" (3/4) ... [2021-10-28 23:22:21,169 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:22:21,181 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-28 23:22:21,181 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 23:22:21,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 23:22:21,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:22:21,206 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-10-28 23:22:21,206 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result [2021-10-28 23:22:21,207 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) [2021-10-28 23:22:21,224 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:22:21,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:22:21,225 INFO L168 Benchmark]: Toolchain (without parser) took 6207.99 ms. Allocated memory was 52.4 MB in the beginning and 77.6 MB in the end (delta: 25.2 MB). Free memory was 29.3 MB in the beginning and 42.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:21,226 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:22:21,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.28 ms. Allocated memory is still 52.4 MB. Free memory was 29.1 MB in the beginning and 31.9 MB in the end (delta: -2.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:21,227 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.62 ms. Allocated memory is still 52.4 MB. Free memory was 31.9 MB in the beginning and 30.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:21,227 INFO L168 Benchmark]: Boogie Preprocessor took 64.99 ms. Allocated memory is still 52.4 MB. Free memory was 30.1 MB in the beginning and 28.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:21,228 INFO L168 Benchmark]: RCFGBuilder took 453.44 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.6 MB in the beginning and 39.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:21,234 INFO L168 Benchmark]: TraceAbstraction took 5189.18 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 38.8 MB in the beginning and 45.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:21,234 INFO L168 Benchmark]: Witness Printer took 59.49 ms. Allocated memory is still 77.6 MB. Free memory was 45.9 MB in the beginning and 42.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:22:21,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.28 ms. Allocated memory is still 52.4 MB. Free memory was 29.1 MB in the beginning and 31.9 MB in the end (delta: -2.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.62 ms. Allocated memory is still 52.4 MB. Free memory was 31.9 MB in the beginning and 30.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.99 ms. Allocated memory is still 52.4 MB. Free memory was 30.1 MB in the beginning and 28.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 453.44 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.6 MB in the beginning and 39.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5189.18 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 38.8 MB in the beginning and 45.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Witness Printer took 59.49 ms. Allocated memory is still 77.6 MB. Free memory was 45.9 MB in the beginning and 42.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 61]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 126 SDslu, 523 SDs, 0 SdLazy, 132 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 188 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 538 SizeOfPredicates, 32 NumberOfNonLiveVariables, 359 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) - InvariantResult [Line: 46]: Loop Invariant [2021-10-28 23:22:21,245 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:22:21,245 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (!~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 36]: Loop Invariant [2021-10-28 23:22:21,246 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:22:21,247 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-28 23:22:21,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6a377c-fce3-472f-8065-3dca44b50c7d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...