./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.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_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/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_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/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_6210ef58-0524-4be3-9e3e-2f4939d98beb/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 b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/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_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/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_6210ef58-0524-4be3-9e3e-2f4939d98beb/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 b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:16:42,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:16:42,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:16:42,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:16:42,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:16:42,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:16:42,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:16:42,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:16:42,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:16:42,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:16:42,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:16:42,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:16:42,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:16:42,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:16:42,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:16:42,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:16:42,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:16:42,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:16:42,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:16:42,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:16:42,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:16:42,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:16:42,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:16:42,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:16:42,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:16:42,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:16:42,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:16:42,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:16:42,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:16:42,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:16:42,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:16:42,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:16:42,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:16:42,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:16:42,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:16:42,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:16:42,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:16:42,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:16:42,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:16:42,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:16:42,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:16:42,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:16:42,505 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:16:42,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:16:42,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:16:42,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:16:42,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:16:42,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:16:42,515 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:16:42,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:16:42,515 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:16:42,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:16:42,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:16:42,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:16:42,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:16:42,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:16:42,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:16:42,518 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:16:42,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:16:42,518 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:16:42,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:16:42,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:16:42,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:16:42,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:16:42,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:16:42,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:16:42,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:16:42,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:16:42,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:16:42,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:16:42,520 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:16:42,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:16:42,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:16:42,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:16:42,523 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_6210ef58-0524-4be3-9e3e-2f4939d98beb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 [2021-10-28 23:16:42,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:16:42,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:16:42,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:16:42,820 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:16:42,820 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:16:42,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-10-28 23:16:42,921 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/data/76165c07b/f1aff05f28234b96ab6043b7b7d5a1c9/FLAGe631f52b9 [2021-10-28 23:16:43,336 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:16:43,337 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-10-28 23:16:43,343 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/data/76165c07b/f1aff05f28234b96ab6043b7b7d5a1c9/FLAGe631f52b9 [2021-10-28 23:16:43,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/data/76165c07b/f1aff05f28234b96ab6043b7b7d5a1c9 [2021-10-28 23:16:43,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:16:43,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:16:43,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:16:43,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:16:43,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:16:43,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:16:43" (1/1) ... [2021-10-28 23:16:43,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1205ea4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43, skipping insertion in model container [2021-10-28 23:16:43,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:16:43" (1/1) ... [2021-10-28 23:16:43,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:16:43,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:16:43,922 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_6210ef58-0524-4be3-9e3e-2f4939d98beb/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-10-28 23:16:43,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:16:43,933 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:16:43,955 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_6210ef58-0524-4be3-9e3e-2f4939d98beb/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-10-28 23:16:43,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:16:43,970 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:16:43,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43 WrapperNode [2021-10-28 23:16:43,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:16:43,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:16:43,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:16:43,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:16:43,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43" (1/1) ... [2021-10-28 23:16:43,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43" (1/1) ... [2021-10-28 23:16:44,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:16:44,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:16:44,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:16:44,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:16:44,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43" (1/1) ... [2021-10-28 23:16:44,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43" (1/1) ... [2021-10-28 23:16:44,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43" (1/1) ... [2021-10-28 23:16:44,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43" (1/1) ... [2021-10-28 23:16:44,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43" (1/1) ... [2021-10-28 23:16:44,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43" (1/1) ... [2021-10-28 23:16:44,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43" (1/1) ... [2021-10-28 23:16:44,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:16:44,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:16:44,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:16:44,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:16:44,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43" (1/1) ... [2021-10-28 23:16:44,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:16:44,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:16:44,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:16:44,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:16:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:16:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:16:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-28 23:16:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:16:44,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:16:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:16:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:16:44,482 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:16:44,483 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 23:16:44,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:16:44 BoogieIcfgContainer [2021-10-28 23:16:44,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:16:44,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:16:44,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:16:44,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:16:44,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:16:43" (1/3) ... [2021-10-28 23:16:44,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c46e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:16:44, skipping insertion in model container [2021-10-28 23:16:44,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:43" (2/3) ... [2021-10-28 23:16:44,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c46e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:16:44, skipping insertion in model container [2021-10-28 23:16:44,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:16:44" (3/3) ... [2021-10-28 23:16:44,495 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2021-10-28 23:16:44,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:16:44,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:16:44,556 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:16:44,564 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 23:16:44,564 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:16:44,582 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 23:16:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:16:44,588 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:16:44,589 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:44,590 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:16:44,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-10-28 23:16:44,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:44,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862103961] [2021-10-28 23:16:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:44,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:16:44,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:16:44,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862103961] [2021-10-28 23:16:44,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862103961] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:44,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:44,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:16:44,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846730643] [2021-10-28 23:16:44,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:16:44,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:16:44,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:16:44,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:16:44,798 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 23:16:44,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:44,816 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-10-28 23:16:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:16:44,818 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 23:16:44,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:16:44,827 INFO L225 Difference]: With dead ends: 54 [2021-10-28 23:16:44,827 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 23:16:44,830 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 23:16:44,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 23:16:44,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-28 23:16:44,858 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 23:16:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-10-28 23:16:44,861 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-10-28 23:16:44,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:16:44,861 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-10-28 23:16:44,862 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 23:16:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-10-28 23:16:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:16:44,863 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:16:44,863 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:44,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:16:44,864 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:16:44,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:44,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-10-28 23:16:44,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:44,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876677256] [2021-10-28 23:16:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:44,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:45,031 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 23:16:45,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:16:45,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876677256] [2021-10-28 23:16:45,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876677256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:45,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:45,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:16:45,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166687435] [2021-10-28 23:16:45,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:16:45,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:16:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:16:45,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:16:45,036 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 23:16:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:45,086 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-10-28 23:16:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:16:45,087 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 23:16:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:16:45,088 INFO L225 Difference]: With dead ends: 41 [2021-10-28 23:16:45,088 INFO L226 Difference]: Without dead ends: 36 [2021-10-28 23:16:45,089 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 23:16:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-28 23:16:45,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-10-28 23:16:45,095 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 23:16:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-28 23:16:45,096 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-10-28 23:16:45,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:16:45,097 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-28 23:16:45,097 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 23:16:45,097 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-28 23:16:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:16:45,098 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:16:45,098 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:45,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:16:45,099 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:16:45,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:45,100 INFO L85 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2021-10-28 23:16:45,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:45,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590478977] [2021-10-28 23:16:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:45,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:45,197 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 23:16:45,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:16:45,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590478977] [2021-10-28 23:16:45,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590478977] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:45,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:45,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:16:45,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849172378] [2021-10-28 23:16:45,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:16:45,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:16:45,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:16:45,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:16:45,200 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 23:16:45,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:45,268 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-28 23:16:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:16:45,269 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 23:16:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:16:45,270 INFO L225 Difference]: With dead ends: 43 [2021-10-28 23:16:45,270 INFO L226 Difference]: Without dead ends: 38 [2021-10-28 23:16:45,271 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 23:16:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-28 23:16:45,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-28 23:16:45,275 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 23:16:45,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-28 23:16:45,276 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2021-10-28 23:16:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:16:45,277 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-28 23:16:45,277 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 23:16:45,277 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-28 23:16:45,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:16:45,278 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:16:45,278 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:45,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:16:45,279 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:16:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:45,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2021-10-28 23:16:45,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:45,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273392281] [2021-10-28 23:16:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:45,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:45,367 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 23:16:45,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:16:45,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273392281] [2021-10-28 23:16:45,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273392281] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:45,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:45,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:16:45,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137833979] [2021-10-28 23:16:45,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:16:45,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:16:45,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:16:45,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:16:45,371 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 23:16:45,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:45,409 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-10-28 23:16:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:16:45,410 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 23:16:45,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:16:45,411 INFO L225 Difference]: With dead ends: 45 [2021-10-28 23:16:45,411 INFO L226 Difference]: Without dead ends: 40 [2021-10-28 23:16:45,412 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 23:16:45,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-28 23:16:45,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2021-10-28 23:16:45,417 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 23:16:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-28 23:16:45,420 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2021-10-28 23:16:45,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:16:45,423 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-28 23:16:45,423 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 23:16:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-28 23:16:45,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:16:45,424 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:16:45,424 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:45,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:16:45,425 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:16:45,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:45,429 INFO L85 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2021-10-28 23:16:45,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:45,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067921307] [2021-10-28 23:16:45,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:45,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:45,517 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 23:16:45,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:16:45,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067921307] [2021-10-28 23:16:45,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067921307] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:45,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:45,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:16:45,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325824418] [2021-10-28 23:16:45,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:16:45,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:16:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:16:45,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:16:45,524 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 23:16:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:45,584 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-10-28 23:16:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:16:45,585 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 23:16:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:16:45,586 INFO L225 Difference]: With dead ends: 43 [2021-10-28 23:16:45,586 INFO L226 Difference]: Without dead ends: 38 [2021-10-28 23:16:45,586 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 23:16:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-28 23:16:45,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-10-28 23:16:45,592 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 23:16:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-28 23:16:45,597 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2021-10-28 23:16:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:16:45,597 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-28 23:16:45,598 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 23:16:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-28 23:16:45,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:16:45,599 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:16:45,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:45,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:16:45,600 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:16:45,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:45,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-10-28 23:16:45,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:45,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387629068] [2021-10-28 23:16:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:45,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:45,628 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:16:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:45,698 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:16:45,698 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:16:45,699 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:16:45,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:16:45,710 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-28 23:16:45,713 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:16:45,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:16:45 BoogieIcfgContainer [2021-10-28 23:16:45,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:16:45,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:16:45,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:16:45,748 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:16:45,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:16:44" (3/4) ... [2021-10-28 23:16:45,752 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:16:45,752 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:16:45,754 INFO L168 Benchmark]: Toolchain (without parser) took 2010.60 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 51.6 MB in the beginning and 51.2 MB in the end (delta: 380.4 kB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:16:45,755 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:16:45,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.37 ms. Allocated memory is still 88.1 MB. Free memory was 51.4 MB in the beginning and 41.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:16:45,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.53 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 41.2 MB in the beginning and 85.2 MB in the end (delta: -44.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:16:45,757 INFO L168 Benchmark]: Boogie Preprocessor took 66.98 ms. Allocated memory is still 107.0 MB. Free memory was 85.2 MB in the beginning and 85.3 MB in the end (delta: -154.3 kB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:16:45,758 INFO L168 Benchmark]: RCFGBuilder took 378.68 ms. Allocated memory is still 107.0 MB. Free memory was 85.3 MB in the beginning and 72.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:16:45,758 INFO L168 Benchmark]: TraceAbstraction took 1260.10 ms. Allocated memory is still 107.0 MB. Free memory was 72.1 MB in the beginning and 51.8 MB in the end (delta: 20.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:16:45,759 INFO L168 Benchmark]: Witness Printer took 4.45 ms. Allocated memory is still 107.0 MB. Free memory was 51.8 MB in the beginning and 51.2 MB in the end (delta: 598.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:16:45,763 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 223.37 ms. Allocated memory is still 88.1 MB. Free memory was 51.4 MB in the beginning and 41.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.53 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 41.2 MB in the beginning and 85.2 MB in the end (delta: -44.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.98 ms. Allocated memory is still 107.0 MB. Free memory was 85.2 MB in the beginning and 85.3 MB in the end (delta: -154.3 kB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 378.68 ms. Allocated memory is still 107.0 MB. Free memory was 85.3 MB in the beginning and 72.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1260.10 ms. Allocated memory is still 107.0 MB. Free memory was 72.1 MB in the beginning and 51.8 MB in the end (delta: 20.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.45 ms. Allocated memory is still 107.0 MB. Free memory was 51.8 MB in the beginning and 51.2 MB in the end (delta: 598.3 kB). There was no memory consumed. 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: 67]: 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 56, overapproximation of someBinaryArithmeticFLOAToperation at line 62. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L64] float res = fmax_float(x, y); [L56] return x != x; [L66] COND TRUE !isnan_float(res) [L67] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, 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, 0.3s 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 23:16:45,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/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 23:16:48,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:16:48,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:16:48,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:16:48,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:16:48,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:16:48,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:16:48,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:16:48,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:16:48,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:16:48,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:16:48,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:16:48,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:16:48,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:16:48,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:16:48,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:16:48,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:16:48,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:16:48,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:16:48,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:16:48,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:16:48,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:16:48,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:16:48,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:16:48,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:16:48,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:16:48,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:16:48,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:16:48,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:16:48,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:16:48,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:16:48,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:16:48,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:16:48,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:16:48,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:16:48,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:16:48,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:16:48,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:16:48,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:16:48,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:16:48,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:16:48,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:16:48,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:16:48,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:16:48,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:16:48,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:16:48,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:16:48,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:16:48,465 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:16:48,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:16:48,466 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:16:48,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:16:48,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:16:48,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:16:48,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:16:48,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:16:48,468 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:16:48,468 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:16:48,468 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:16:48,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:16:48,469 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:16:48,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:16:48,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:16:48,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:16:48,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:16:48,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:16:48,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:16:48,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:16:48,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:16:48,471 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:16:48,471 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:16:48,471 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:16:48,472 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:16:48,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:16:48,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:16:48,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:16:48,473 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_6210ef58-0524-4be3-9e3e-2f4939d98beb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 [2021-10-28 23:16:48,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:16:48,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:16:48,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:16:48,856 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:16:48,857 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:16:48,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-10-28 23:16:48,929 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/data/40708a4db/cc1a2d1d615149cfabf46437e76cc4de/FLAGfe1d32f0b [2021-10-28 23:16:49,395 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:16:49,396 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-10-28 23:16:49,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/data/40708a4db/cc1a2d1d615149cfabf46437e76cc4de/FLAGfe1d32f0b [2021-10-28 23:16:49,773 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/data/40708a4db/cc1a2d1d615149cfabf46437e76cc4de [2021-10-28 23:16:49,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:16:49,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:16:49,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:16:49,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:16:49,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:16:49,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:16:49" (1/1) ... [2021-10-28 23:16:49,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3792dffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:49, skipping insertion in model container [2021-10-28 23:16:49,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:16:49" (1/1) ... [2021-10-28 23:16:49,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:16:49,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:16:49,973 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_6210ef58-0524-4be3-9e3e-2f4939d98beb/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-10-28 23:16:49,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:16:49,988 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:16:50,051 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_6210ef58-0524-4be3-9e3e-2f4939d98beb/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-10-28 23:16:50,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:16:50,074 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:16:50,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:50 WrapperNode [2021-10-28 23:16:50,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:16:50,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:16:50,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:16:50,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:16:50,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:50" (1/1) ... [2021-10-28 23:16:50,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:50" (1/1) ... [2021-10-28 23:16:50,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:16:50,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:16:50,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:16:50,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:16:50,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:50" (1/1) ... [2021-10-28 23:16:50,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:50" (1/1) ... [2021-10-28 23:16:50,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:50" (1/1) ... [2021-10-28 23:16:50,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:50" (1/1) ... [2021-10-28 23:16:50,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:50" (1/1) ... [2021-10-28 23:16:50,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:50" (1/1) ... [2021-10-28 23:16:50,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:50" (1/1) ... [2021-10-28 23:16:50,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:16:50,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:16:50,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:16:50,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:16:50,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:50" (1/1) ... [2021-10-28 23:16:50,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:16:50,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:16:50,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:16:50,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:16:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:16:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:16:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:16:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:16:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:16:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-28 23:16:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:16:50,655 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:16:50,655 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 23:16:50,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:16:50 BoogieIcfgContainer [2021-10-28 23:16:50,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:16:50,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:16:50,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:16:50,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:16:50,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:16:49" (1/3) ... [2021-10-28 23:16:50,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2db5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:16:50, skipping insertion in model container [2021-10-28 23:16:50,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:50" (2/3) ... [2021-10-28 23:16:50,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2db5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:16:50, skipping insertion in model container [2021-10-28 23:16:50,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:16:50" (3/3) ... [2021-10-28 23:16:50,681 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2021-10-28 23:16:50,686 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:16:50,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:16:50,771 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:16:50,784 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 23:16:50,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:16:50,802 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 23:16:50,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:16:50,824 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:16:50,825 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:50,826 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:16:50,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:50,833 INFO L85 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-10-28 23:16:50,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:16:50,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334910686] [2021-10-28 23:16:50,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:50,849 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:16:50,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:16:50,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:16:50,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:16:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:50,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:16:50,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:16:51,017 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 23:16:51,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:16:51,049 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 23:16:51,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:16:51,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334910686] [2021-10-28 23:16:51,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334910686] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:51,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:51,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:16:51,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066270964] [2021-10-28 23:16:51,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:16:51,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:16:51,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:16:51,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:16:51,073 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 23:16:51,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:51,101 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-10-28 23:16:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:16:51,103 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 23:16:51,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:16:51,111 INFO L225 Difference]: With dead ends: 54 [2021-10-28 23:16:51,118 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 23:16:51,121 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 23:16:51,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 23:16:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-28 23:16:51,163 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 23:16:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-10-28 23:16:51,168 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-10-28 23:16:51,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:16:51,169 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-10-28 23:16:51,170 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 23:16:51,170 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-10-28 23:16:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:16:51,171 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:16:51,171 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:51,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-28 23:16:51,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:16:51,388 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:16:51,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-10-28 23:16:51,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:16:51,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926104532] [2021-10-28 23:16:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:51,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:16:51,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:16:51,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:16:51,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:16:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:51,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:16:51,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:16:51,571 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 23:16:51,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:16:51,643 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 23:16:51,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:16:51,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926104532] [2021-10-28 23:16:51,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926104532] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:51,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:51,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 23:16:51,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142435226] [2021-10-28 23:16:51,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:16:51,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:16:51,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:16:51,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:16:51,648 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 23:16:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:51,786 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2021-10-28 23:16:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:16:51,786 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 23:16:51,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:16:51,788 INFO L225 Difference]: With dead ends: 52 [2021-10-28 23:16:51,788 INFO L226 Difference]: Without dead ends: 47 [2021-10-28 23:16:51,789 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 23:16:51,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-28 23:16:51,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-10-28 23:16:51,794 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 23:16:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-10-28 23:16:51,795 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-10-28 23:16:51,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:16:51,796 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-10-28 23:16:51,796 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 23:16:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-10-28 23:16:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:16:51,808 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:16:51,808 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:51,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-28 23:16:52,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:16:52,020 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:16:52,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:52,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-10-28 23:16:52,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:16:52,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529670459] [2021-10-28 23:16:52,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:52,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:16:52,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:16:52,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:16:52,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:16:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:52,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:16:52,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:16:52,417 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 23:16:52,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:16:52,555 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 23:16:52,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:16:52,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529670459] [2021-10-28 23:16:52,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529670459] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:52,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:52,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-28 23:16:52,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297487807] [2021-10-28 23:16:52,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:16:52,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:16:52,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:16:52,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:16:52,559 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 23:16:52,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:52,886 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-10-28 23:16:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:16:52,888 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 23:16:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:16:52,889 INFO L225 Difference]: With dead ends: 36 [2021-10-28 23:16:52,889 INFO L226 Difference]: Without dead ends: 27 [2021-10-28 23:16:52,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:16:52,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-28 23:16:52,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-10-28 23:16:52,900 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 23:16:52,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-10-28 23:16:52,901 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-10-28 23:16:52,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:16:52,906 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-10-28 23:16:52,906 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 23:16:52,907 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-10-28 23:16:52,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:16:52,908 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:16:52,908 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:52,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:16:53,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:16:53,109 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:16:53,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:53,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2021-10-28 23:16:53,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:16:53,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723059432] [2021-10-28 23:16:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:53,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:16:53,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:16:53,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:16:53,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:16:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:53,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:16:53,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:16:53,282 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 23:16:53,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:16:53,346 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 23:16:53,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:16:53,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723059432] [2021-10-28 23:16:53,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723059432] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:53,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:53,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 23:16:53,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689701237] [2021-10-28 23:16:53,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:16:53,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:16:53,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:16:53,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:16:53,351 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 23:16:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:53,468 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-28 23:16:53,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:16:53,473 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 23:16:53,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:16:53,474 INFO L225 Difference]: With dead ends: 52 [2021-10-28 23:16:53,474 INFO L226 Difference]: Without dead ends: 47 [2021-10-28 23:16:53,475 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 23:16:53,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-28 23:16:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-10-28 23:16:53,483 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 23:16:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-10-28 23:16:53,484 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2021-10-28 23:16:53,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:16:53,484 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-10-28 23:16:53,485 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 23:16:53,485 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-10-28 23:16:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:16:53,486 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:16:53,486 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 23:16:53,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:16:53,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:16:53,701 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:16:53,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2021-10-28 23:16:53,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:16:53,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223944153] [2021-10-28 23:16:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:53,703 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:16:53,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:16:53,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:16:53,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:16:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:53,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:16:53,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:16:54,096 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 23:16:54,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:16:54,280 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 23:16:54,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:16:54,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223944153] [2021-10-28 23:16:54,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223944153] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:54,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:54,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-28 23:16:54,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578786690] [2021-10-28 23:16:54,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:16:54,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:16:54,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:16:54,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:16:54,284 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 23:16:54,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:54,640 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-10-28 23:16:54,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:16:54,650 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 23:16:54,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:16:54,651 INFO L225 Difference]: With dead ends: 32 [2021-10-28 23:16:54,651 INFO L226 Difference]: Without dead ends: 23 [2021-10-28 23:16:54,652 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 23:16:54,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-28 23:16:54,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-28 23:16:54,656 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 23:16:54,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-28 23:16:54,657 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2021-10-28 23:16:54,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:16:54,657 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-28 23:16:54,657 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 23:16:54,657 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-28 23:16:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:16:54,658 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:16:54,658 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 23:16:54,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-28 23:16:54,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:16:54,859 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:16:54,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:54,860 INFO L85 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2021-10-28 23:16:54,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:16:54,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589447231] [2021-10-28 23:16:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:54,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:16:54,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:16:54,863 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:16:54,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:16:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:54,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:16:54,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:16:55,222 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 23:16:55,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:16:55,343 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 23:16:55,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:16:55,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589447231] [2021-10-28 23:16:55,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589447231] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:55,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:55,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-28 23:16:55,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432892868] [2021-10-28 23:16:55,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:16:55,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:16:55,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:16:55,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:16:55,346 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 23:16:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:55,546 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-28 23:16:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:16:55,547 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 23:16:55,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:16:55,547 INFO L225 Difference]: With dead ends: 23 [2021-10-28 23:16:55,547 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:16:55,548 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 23:16:55,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:16:55,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:16:55,548 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 23:16:55,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:16:55,549 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-28 23:16:55,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:16:55,549 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:16:55,549 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 23:16:55,550 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:16:55,550 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:16:55,552 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:16:55,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:16:55,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:16:55,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:16:55,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:16:55,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:16:55,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:16:55,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:16:55,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:16:55,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:16:55,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:16:55,919 INFO L853 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-10-28 23:16:55,919 INFO L857 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2021-10-28 23:16:55,920 INFO L857 garLoopResultBuilder]: For program point L52-2(line 52) no Hoare annotation was computed. [2021-10-28 23:16:55,920 INFO L853 garLoopResultBuilder]: At program point L52-3(lines 44 53) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2021-10-28 23:16:55,920 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 41) no Hoare annotation was computed. [2021-10-28 23:16:55,920 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:16:55,920 INFO L857 garLoopResultBuilder]: For program point L32-1(lines 32 41) no Hoare annotation was computed. [2021-10-28 23:16:55,920 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:16:55,920 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:16:55,921 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 67) no Hoare annotation was computed. [2021-10-28 23:16:55,921 INFO L857 garLoopResultBuilder]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2021-10-28 23:16:55,921 INFO L853 garLoopResultBuilder]: At program point L24-2(lines 24 28) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2021-10-28 23:16:55,921 INFO L857 garLoopResultBuilder]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2021-10-28 23:16:55,921 INFO L857 garLoopResultBuilder]: For program point L24-5(lines 24 28) no Hoare annotation was computed. [2021-10-28 23:16:55,921 INFO L853 garLoopResultBuilder]: At program point L24-6(lines 24 28) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2021-10-28 23:16:55,922 INFO L857 garLoopResultBuilder]: For program point L24-7(lines 21 42) no Hoare annotation was computed. [2021-10-28 23:16:55,922 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 51) no Hoare annotation was computed. [2021-10-28 23:16:55,922 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 47) no Hoare annotation was computed. [2021-10-28 23:16:55,922 INFO L853 garLoopResultBuilder]: At program point L41(lines 21 42) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2021-10-28 23:16:55,922 INFO L853 garLoopResultBuilder]: At program point L41-1(lines 21 42) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)))) (or (and .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))))) [2021-10-28 23:16:55,922 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 69) no Hoare annotation was computed. [2021-10-28 23:16:55,922 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:16:55,923 INFO L860 garLoopResultBuilder]: At program point L71(lines 58 72) the Hoare annotation is: true [2021-10-28 23:16:55,923 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 41) no Hoare annotation was computed. [2021-10-28 23:16:55,923 INFO L857 garLoopResultBuilder]: For program point L38-1(lines 38 41) no Hoare annotation was computed. [2021-10-28 23:16:55,923 INFO L857 garLoopResultBuilder]: For program point L67(line 67) no Hoare annotation was computed. [2021-10-28 23:16:55,923 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 41) no Hoare annotation was computed. [2021-10-28 23:16:55,923 INFO L857 garLoopResultBuilder]: For program point L35-1(lines 35 41) no Hoare annotation was computed. [2021-10-28 23:16:55,926 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-28 23:16:55,928 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:16:55,947 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:16:55,950 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:16:55,952 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:16:55,952 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:16:55,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:16:55 BoogieIcfgContainer [2021-10-28 23:16:55,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:16:55,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:16:55,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:16:55,957 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:16:55,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:16:50" (3/4) ... [2021-10-28 23:16:55,960 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:16:55,975 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-28 23:16:55,975 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 23:16:55,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 23:16:55,978 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:16:56,022 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(y, y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-10-28 23:16:56,024 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(y, y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result [2021-10-28 23:16:56,025 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 23:16:56,057 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:16:56,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:16:56,061 INFO L168 Benchmark]: Toolchain (without parser) took 6282.23 ms. Allocated memory was 52.4 MB in the beginning and 81.8 MB in the end (delta: 29.4 MB). Free memory was 29.8 MB in the beginning and 61.7 MB in the end (delta: -31.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:16:56,061 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 52.4 MB. Free memory was 33.6 MB in the beginning and 33.6 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:16:56,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.04 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 29.6 MB in the beginning and 50.2 MB in the end (delta: -20.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:16:56,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.71 ms. Allocated memory is still 67.1 MB. Free memory was 50.0 MB in the beginning and 48.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:16:56,066 INFO L168 Benchmark]: Boogie Preprocessor took 67.79 ms. Allocated memory is still 67.1 MB. Free memory was 48.3 MB in the beginning and 46.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:16:56,067 INFO L168 Benchmark]: RCFGBuilder took 447.25 ms. Allocated memory is still 67.1 MB. Free memory was 46.8 MB in the beginning and 49.1 MB in the end (delta: -2.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:16:56,067 INFO L168 Benchmark]: TraceAbstraction took 5296.07 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 48.6 MB in the beginning and 31.5 MB in the end (delta: 17.1 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:16:56,067 INFO L168 Benchmark]: Witness Printer took 102.85 ms. Allocated memory is still 81.8 MB. Free memory was 31.5 MB in the beginning and 61.7 MB in the end (delta: -30.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:16:56,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 52.4 MB. Free memory was 33.6 MB in the beginning and 33.6 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.04 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 29.6 MB in the beginning and 50.2 MB in the end (delta: -20.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.71 ms. Allocated memory is still 67.1 MB. Free memory was 50.0 MB in the beginning and 48.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.79 ms. Allocated memory is still 67.1 MB. Free memory was 48.3 MB in the beginning and 46.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 447.25 ms. Allocated memory is still 67.1 MB. Free memory was 46.8 MB in the beginning and 49.1 MB in the end (delta: -2.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5296.07 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 48.6 MB in the beginning and 31.5 MB in the end (delta: 17.1 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. * Witness Printer took 102.85 ms. Allocated memory is still 81.8 MB. Free memory was 31.5 MB in the beginning and 61.7 MB in the end (delta: -30.1 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: 67]: 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: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 126 SDslu, 523 SDs, 0 SdLazy, 132 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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, 227 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s 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: 21]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 56]: Loop Invariant [2021-10-28 23:16:56,080 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:16:56,081 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (!~fp.eq~FLOAT(y, y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result - InvariantResult [Line: 44]: Loop Invariant [2021-10-28 23:16:56,081 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-28 23:16:56,082 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~FLOAT(y, y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) RESULT: Ultimate proved your program to be correct! [2021-10-28 23:16:56,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6210ef58-0524-4be3-9e3e-2f4939d98beb/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...