./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be --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 1f6e3ea051ad39822c46ff9cb12f1fe0324fb4c12be74e4be841016f2db74b5c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be --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 1f6e3ea051ad39822c46ff9cb12f1fe0324fb4c12be74e4be841016f2db74b5c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:40:53,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:40:53,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:40:53,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:40:53,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:40:53,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:40:53,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:40:53,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:40:53,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:40:53,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:40:53,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:40:53,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:40:53,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:40:53,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:40:53,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:40:53,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:40:53,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:40:53,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:40:53,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:40:53,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:40:53,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:40:53,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:40:53,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:40:53,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:40:53,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:40:53,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:40:53,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:40:53,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:40:53,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:40:53,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:40:53,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:40:53,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:40:53,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:40:53,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:40:53,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:40:53,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:40:53,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:40:53,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:40:53,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:40:53,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:40:53,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:40:53,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:40:53,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:40:53,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:40:53,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:40:53,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:40:53,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:40:53,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:40:53,495 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:40:53,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:40:53,495 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:40:53,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:40:53,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:40:53,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:40:53,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:40:53,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:40:53,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:40:53,498 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:40:53,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:40:53,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:40:53,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:40:53,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:40:53,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:40:53,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:40:53,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:40:53,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:40:53,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:40:53,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:40:53,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:40:53,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:40:53,501 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:40:53,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:40:53,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:40:53,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:40:53,503 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_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f6e3ea051ad39822c46ff9cb12f1fe0324fb4c12be74e4be841016f2db74b5c [2021-10-21 19:40:53,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:40:53,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:40:53,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:40:53,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:40:53,802 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:40:53,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-21 19:40:53,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/data/d24d20625/7d33efdc882c485e9acd6daf44991ec3/FLAG3ccc9714b [2021-10-21 19:40:54,403 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:40:54,403 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-21 19:40:54,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/data/d24d20625/7d33efdc882c485e9acd6daf44991ec3/FLAG3ccc9714b [2021-10-21 19:40:54,744 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/data/d24d20625/7d33efdc882c485e9acd6daf44991ec3 [2021-10-21 19:40:54,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:40:54,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:40:54,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:40:54,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:40:54,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:40:54,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:40:54" (1/1) ... [2021-10-21 19:40:54,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528f7de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:54, skipping insertion in model container [2021-10-21 19:40:54,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:40:54" (1/1) ... [2021-10-21 19:40:54,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:40:54,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:40:54,987 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_2e37f234-668d-41b4-87de-e30dc144af76/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-21 19:40:55,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:40:55,049 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:40:55,059 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_2e37f234-668d-41b4-87de-e30dc144af76/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-21 19:40:55,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:40:55,105 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:40:55,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:55 WrapperNode [2021-10-21 19:40:55,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:40:55,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:40:55,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:40:55,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:40:55,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:55" (1/1) ... [2021-10-21 19:40:55,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:55" (1/1) ... [2021-10-21 19:40:55,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:40:55,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:40:55,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:40:55,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:40:55,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:55" (1/1) ... [2021-10-21 19:40:55,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:55" (1/1) ... [2021-10-21 19:40:55,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:55" (1/1) ... [2021-10-21 19:40:55,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:55" (1/1) ... [2021-10-21 19:40:55,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:55" (1/1) ... [2021-10-21 19:40:55,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:55" (1/1) ... [2021-10-21 19:40:55,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:55" (1/1) ... [2021-10-21 19:40:55,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:40:55,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:40:55,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:40:55,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:40:55,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:55" (1/1) ... [2021-10-21 19:40:55,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:40:55,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:40:55,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:40:55,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:40:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:40:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:40:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:40:55,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:40:55,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:40:55,780 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-21 19:40:55,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:40:55 BoogieIcfgContainer [2021-10-21 19:40:55,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:40:55,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:40:55,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:40:55,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:40:55,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:40:54" (1/3) ... [2021-10-21 19:40:55,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7551953e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:40:55, skipping insertion in model container [2021-10-21 19:40:55,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:40:55" (2/3) ... [2021-10-21 19:40:55,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7551953e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:40:55, skipping insertion in model container [2021-10-21 19:40:55,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:40:55" (3/3) ... [2021-10-21 19:40:55,792 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-10-21 19:40:55,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:40:55,798 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-21 19:40:55,850 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:40:55,858 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 [2021-10-21 19:40:55,858 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-21 19:40:55,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 78 states have (on average 1.7179487179487178) internal successors, (134), 85 states have internal predecessors, (134), 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) [2021-10-21 19:40:55,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:40:55,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:40:55,885 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:40:55,885 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:40:55,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:55,892 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2021-10-21 19:40:55,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:55,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112668144] [2021-10-21 19:40:55,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:55,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:56,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:56,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112668144] [2021-10-21 19:40:56,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112668144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:56,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:56,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:40:56,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705257888] [2021-10-21 19:40:56,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:40:56,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:56,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:40:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:40:56,263 INFO L87 Difference]: Start difference. First operand has 86 states, 78 states have (on average 1.7179487179487178) internal successors, (134), 85 states have internal predecessors, (134), 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 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-10-21 19:40:56,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:40:56,557 INFO L93 Difference]: Finished difference Result 273 states and 400 transitions. [2021-10-21 19:40:56,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:40:56,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 15 [2021-10-21 19:40:56,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:40:56,570 INFO L225 Difference]: With dead ends: 273 [2021-10-21 19:40:56,570 INFO L226 Difference]: Without dead ends: 181 [2021-10-21 19:40:56,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:40:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-21 19:40:56,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 119. [2021-10-21 19:40:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 112 states have (on average 1.4464285714285714) internal successors, (162), 118 states have internal predecessors, (162), 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) [2021-10-21 19:40:56,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2021-10-21 19:40:56,619 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 15 [2021-10-21 19:40:56,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:40:56,620 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2021-10-21 19:40:56,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2021-10-21 19:40:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2021-10-21 19:40:56,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:40:56,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:40:56,622 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:40:56,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:40:56,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:40:56,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:56,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1395490240, now seen corresponding path program 1 times [2021-10-21 19:40:56,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:56,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810428350] [2021-10-21 19:40:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:56,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:56,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:56,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810428350] [2021-10-21 19:40:56,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810428350] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:56,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:56,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:40:56,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044602576] [2021-10-21 19:40:56,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:40:56,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:56,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:40:56,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:40:56,779 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) [2021-10-21 19:40:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:40:56,940 INFO L93 Difference]: Finished difference Result 194 states and 243 transitions. [2021-10-21 19:40:56,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:40:56,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 19 [2021-10-21 19:40:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:40:56,943 INFO L225 Difference]: With dead ends: 194 [2021-10-21 19:40:56,943 INFO L226 Difference]: Without dead ends: 165 [2021-10-21 19:40:56,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:40:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-21 19:40:56,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 108. [2021-10-21 19:40:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 101 states have (on average 1.4257425742574257) internal successors, (144), 107 states have internal predecessors, (144), 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) [2021-10-21 19:40:56,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2021-10-21 19:40:56,959 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2021-10-21 19:40:56,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:40:56,959 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2021-10-21 19:40:56,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) [2021-10-21 19:40:56,960 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2021-10-21 19:40:56,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:40:56,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:40:56,962 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:40:56,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:40:56,962 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:40:56,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:56,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1649339140, now seen corresponding path program 1 times [2021-10-21 19:40:56,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:56,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068566475] [2021-10-21 19:40:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:56,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:57,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:57,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068566475] [2021-10-21 19:40:57,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068566475] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:57,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:57,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-21 19:40:57,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615298240] [2021-10-21 19:40:57,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:40:57,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:40:57,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:40:57,285 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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) [2021-10-21 19:40:57,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:40:57,718 INFO L93 Difference]: Finished difference Result 167 states and 210 transitions. [2021-10-21 19:40:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:40:57,719 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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 23 [2021-10-21 19:40:57,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:40:57,720 INFO L225 Difference]: With dead ends: 167 [2021-10-21 19:40:57,720 INFO L226 Difference]: Without dead ends: 162 [2021-10-21 19:40:57,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 272.0ms TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:40:57,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-21 19:40:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 117. [2021-10-21 19:40:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 110 states have (on average 1.3909090909090909) internal successors, (153), 116 states have internal predecessors, (153), 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) [2021-10-21 19:40:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 153 transitions. [2021-10-21 19:40:57,734 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 153 transitions. Word has length 23 [2021-10-21 19:40:57,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:40:57,734 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 153 transitions. [2021-10-21 19:40:57,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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) [2021-10-21 19:40:57,735 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 153 transitions. [2021-10-21 19:40:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:40:57,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:40:57,737 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:40:57,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:40:57,737 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:40:57,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash 207332738, now seen corresponding path program 1 times [2021-10-21 19:40:57,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:57,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270607660] [2021-10-21 19:40:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:57,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:57,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:57,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270607660] [2021-10-21 19:40:57,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270607660] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:57,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:57,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:40:57,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902424222] [2021-10-21 19:40:57,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:40:57,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:57,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:40:57,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:40:57,823 INFO L87 Difference]: Start difference. First operand 117 states and 153 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-10-21 19:40:57,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:40:57,948 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2021-10-21 19:40:57,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:40:57,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 23 [2021-10-21 19:40:57,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:40:57,951 INFO L225 Difference]: With dead ends: 183 [2021-10-21 19:40:57,951 INFO L226 Difference]: Without dead ends: 158 [2021-10-21 19:40:57,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:40:57,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-21 19:40:57,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 120. [2021-10-21 19:40:57,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 113 states have (on average 1.3893805309734513) internal successors, (157), 119 states have internal predecessors, (157), 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) [2021-10-21 19:40:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-10-21 19:40:57,981 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2021-10-21 19:40:57,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:40:57,982 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-10-21 19:40:57,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-10-21 19:40:57,982 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-10-21 19:40:57,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:40:57,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:40:57,985 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:40:57,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:40:57,985 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:40:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:57,987 INFO L82 PathProgramCache]: Analyzing trace with hash 207392320, now seen corresponding path program 1 times [2021-10-21 19:40:57,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:57,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380157482] [2021-10-21 19:40:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:57,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:58,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:58,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380157482] [2021-10-21 19:40:58,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380157482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:58,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:58,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:40:58,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78987128] [2021-10-21 19:40:58,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:40:58,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:58,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:40:58,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:40:58,183 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-10-21 19:40:58,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:40:58,283 INFO L93 Difference]: Finished difference Result 167 states and 211 transitions. [2021-10-21 19:40:58,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:40:58,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 23 [2021-10-21 19:40:58,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:40:58,285 INFO L225 Difference]: With dead ends: 167 [2021-10-21 19:40:58,285 INFO L226 Difference]: Without dead ends: 142 [2021-10-21 19:40:58,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:40:58,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-21 19:40:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 120. [2021-10-21 19:40:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 113 states have (on average 1.3893805309734513) internal successors, (157), 119 states have internal predecessors, (157), 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) [2021-10-21 19:40:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-10-21 19:40:58,301 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2021-10-21 19:40:58,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:40:58,301 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-10-21 19:40:58,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-10-21 19:40:58,302 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-10-21 19:40:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:40:58,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:40:58,303 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:40:58,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:40:58,304 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:40:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:58,305 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2021-10-21 19:40:58,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:58,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797628838] [2021-10-21 19:40:58,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:58,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:40:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:40:58,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:40:58,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797628838] [2021-10-21 19:40:58,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797628838] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:40:58,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:40:58,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:40:58,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268720048] [2021-10-21 19:40:58,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:40:58,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:40:58,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:40:58,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:40:58,404 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-10-21 19:40:58,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:40:58,604 INFO L93 Difference]: Finished difference Result 342 states and 430 transitions. [2021-10-21 19:40:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:40:58,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2021-10-21 19:40:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:40:58,607 INFO L225 Difference]: With dead ends: 342 [2021-10-21 19:40:58,607 INFO L226 Difference]: Without dead ends: 296 [2021-10-21 19:40:58,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:40:58,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-21 19:40:58,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 134. [2021-10-21 19:40:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 127 states have (on average 1.3937007874015748) internal successors, (177), 133 states have internal predecessors, (177), 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) [2021-10-21 19:40:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2021-10-21 19:40:58,617 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 23 [2021-10-21 19:40:58,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:40:58,617 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2021-10-21 19:40:58,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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) [2021-10-21 19:40:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2021-10-21 19:40:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:40:58,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:40:58,619 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:40:58,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:40:58,619 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:40:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:40:58,623 INFO L82 PathProgramCache]: Analyzing trace with hash 84509231, now seen corresponding path program 1 times [2021-10-21 19:40:58,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:40:58,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331566114] [2021-10-21 19:40:58,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:40:58,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:40:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:40:58,653 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:40:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:40:58,717 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:40:58,717 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:40:58,718 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:40:58,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:40:58,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:40:58,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:40:58,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:40:58,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:40:58,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:40:58,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:40:58,728 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:40:58,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:40:58 BoogieIcfgContainer [2021-10-21 19:40:58,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:40:58,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:40:58,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:40:58,765 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:40:58,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:40:55" (3/4) ... [2021-10-21 19:40:58,769 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:40:58,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:40:58,771 INFO L168 Benchmark]: Toolchain (without parser) took 4021.53 ms. Allocated memory was 79.7 MB in the beginning and 136.3 MB in the end (delta: 56.6 MB). Free memory was 43.6 MB in the beginning and 101.3 MB in the end (delta: -57.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:40:58,771 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory is still 41.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:40:58,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.77 ms. Allocated memory was 79.7 MB in the beginning and 113.2 MB in the end (delta: 33.6 MB). Free memory was 43.4 MB in the beginning and 86.3 MB in the end (delta: -42.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:58,772 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.86 ms. Allocated memory is still 113.2 MB. Free memory was 86.3 MB in the beginning and 83.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:58,773 INFO L168 Benchmark]: Boogie Preprocessor took 63.83 ms. Allocated memory is still 113.2 MB. Free memory was 83.8 MB in the beginning and 82.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:58,774 INFO L168 Benchmark]: RCFGBuilder took 547.48 ms. Allocated memory is still 113.2 MB. Free memory was 82.2 MB in the beginning and 66.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:40:58,774 INFO L168 Benchmark]: TraceAbstraction took 2979.71 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 65.4 MB in the beginning and 101.3 MB in the end (delta: -35.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:40:58,775 INFO L168 Benchmark]: Witness Printer took 4.31 ms. Allocated memory is still 136.3 MB. Free memory is still 101.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:40:58,778 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 79.7 MB. Free memory is still 41.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.77 ms. Allocated memory was 79.7 MB in the beginning and 113.2 MB in the end (delta: 33.6 MB). Free memory was 43.4 MB in the beginning and 86.3 MB in the end (delta: -42.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.86 ms. Allocated memory is still 113.2 MB. Free memory was 86.3 MB in the beginning and 83.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.83 ms. Allocated memory is still 113.2 MB. Free memory was 83.8 MB in the beginning and 82.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 547.48 ms. Allocated memory is still 113.2 MB. Free memory was 82.2 MB in the beginning and 66.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2979.71 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 65.4 MB in the beginning and 101.3 MB in the end (delta: -35.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.31 ms. Allocated memory is still 136.3 MB. Free memory is still 101.3 MB. 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 86 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 2878.3ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 20.2ms, AutomataDifference: 1371.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 720 SDtfs, 1227 SDslu, 3468 SDs, 0 SdLazy, 649 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 596.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 612.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=6, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 109.1ms AutomataMinimizationTime, 6 MinimizatonAttempts, 386 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.1ms SsaConstructionTime, 271.2ms SatisfiabilityAnalysisTime, 741.5ms InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 [2021-10-21 19:40:58,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 19:41:01,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:41:01,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:41:01,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:41:01,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:41:01,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:41:01,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:41:01,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:41:01,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:41:01,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:41:01,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:41:01,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:41:01,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:41:01,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:41:01,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:41:01,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:41:01,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:41:01,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:41:01,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:41:01,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:41:01,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:41:01,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:41:01,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:41:01,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:41:01,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:41:01,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:41:01,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:41:01,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:41:01,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:41:01,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:41:01,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:41:01,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:41:01,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:41:01,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:41:01,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:41:01,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:41:01,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:41:01,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:41:01,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:41:01,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:41:01,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:41:01,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 19:41:01,531 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:41:01,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:41:01,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:41:01,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:41:01,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:41:01,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:41:01,535 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:41:01,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:41:01,536 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:41:01,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:41:01,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:41:01,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:41:01,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:41:01,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:41:01,538 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:41:01,538 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:41:01,539 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:41:01,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:41:01,539 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:41:01,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:41:01,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:41:01,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:41:01,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:41:01,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:41:01,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:41:01,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:41:01,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:41:01,541 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:41:01,541 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:41:01,542 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:41:01,542 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:41:01,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:41:01,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:41:01,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:41:01,543 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_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f6e3ea051ad39822c46ff9cb12f1fe0324fb4c12be74e4be841016f2db74b5c [2021-10-21 19:41:01,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:41:01,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:41:01,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:41:01,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:41:01,957 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:41:01,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-21 19:41:02,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/data/6fc82e66c/ac5b2a75b1dc4a7da644b9ba5a7b2fe9/FLAGe6239b8b0 [2021-10-21 19:41:02,663 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:41:02,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-10-21 19:41:02,676 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/data/6fc82e66c/ac5b2a75b1dc4a7da644b9ba5a7b2fe9/FLAGe6239b8b0 [2021-10-21 19:41:02,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/data/6fc82e66c/ac5b2a75b1dc4a7da644b9ba5a7b2fe9 [2021-10-21 19:41:02,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:41:02,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:41:02,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:41:02,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:41:02,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:41:02,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:41:02" (1/1) ... [2021-10-21 19:41:02,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1760614c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:02, skipping insertion in model container [2021-10-21 19:41:02,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:41:02" (1/1) ... [2021-10-21 19:41:02,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:41:02,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:41:02,879 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_2e37f234-668d-41b4-87de-e30dc144af76/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-21 19:41:02,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:41:02,960 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:41:02,999 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_2e37f234-668d-41b4-87de-e30dc144af76/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-10-21 19:41:03,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:41:03,066 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:41:03,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:03 WrapperNode [2021-10-21 19:41:03,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:41:03,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:41:03,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:41:03,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:41:03,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:03" (1/1) ... [2021-10-21 19:41:03,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:03" (1/1) ... [2021-10-21 19:41:03,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:41:03,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:41:03,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:41:03,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:41:03,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:03" (1/1) ... [2021-10-21 19:41:03,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:03" (1/1) ... [2021-10-21 19:41:03,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:03" (1/1) ... [2021-10-21 19:41:03,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:03" (1/1) ... [2021-10-21 19:41:03,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:03" (1/1) ... [2021-10-21 19:41:03,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:03" (1/1) ... [2021-10-21 19:41:03,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:03" (1/1) ... [2021-10-21 19:41:03,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:41:03,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:41:03,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:41:03,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:41:03,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:03" (1/1) ... [2021-10-21 19:41:03,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:41:03,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:03,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:03,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:41:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:41:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:41:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:41:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:41:03,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:41:03,786 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-21 19:41:03,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:41:03 BoogieIcfgContainer [2021-10-21 19:41:03,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:41:03,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:41:03,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:41:03,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:41:03,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:41:02" (1/3) ... [2021-10-21 19:41:03,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ea968c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:41:03, skipping insertion in model container [2021-10-21 19:41:03,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:03" (2/3) ... [2021-10-21 19:41:03,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ea968c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:41:03, skipping insertion in model container [2021-10-21 19:41:03,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:41:03" (3/3) ... [2021-10-21 19:41:03,804 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-10-21 19:41:03,810 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:41:03,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-21 19:41:03,886 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:41:03,893 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 [2021-10-21 19:41:03,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-21 19:41:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 78 states have (on average 1.7179487179487178) internal successors, (134), 85 states have internal predecessors, (134), 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) [2021-10-21 19:41:03,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:41:03,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:03,917 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:03,917 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:03,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:03,923 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2021-10-21 19:41:03,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:41:03,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736740166] [2021-10-21 19:41:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:03,937 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:41:03,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:41:03,941 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:41:03,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:41:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:04,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:41:04,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:04,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:41:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:04,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:41:04,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736740166] [2021-10-21 19:41:04,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736740166] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:04,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:04,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:41:04,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14683731] [2021-10-21 19:41:04,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:41:04,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:41:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:41:04,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:41:04,239 INFO L87 Difference]: Start difference. First operand has 86 states, 78 states have (on average 1.7179487179487178) internal successors, (134), 85 states have internal predecessors, (134), 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 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-10-21 19:41:04,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:04,427 INFO L93 Difference]: Finished difference Result 231 states and 333 transitions. [2021-10-21 19:41:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:41:04,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-10-21 19:41:04,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:04,445 INFO L225 Difference]: With dead ends: 231 [2021-10-21 19:41:04,445 INFO L226 Difference]: Without dead ends: 139 [2021-10-21 19:41:04,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:41:04,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-21 19:41:04,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2021-10-21 19:41:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 85 states have internal predecessors, (115), 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) [2021-10-21 19:41:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2021-10-21 19:41:04,547 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2021-10-21 19:41:04,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:04,548 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2021-10-21 19:41:04,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-10-21 19:41:04,548 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2021-10-21 19:41:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:41:04,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:04,552 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:04,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:04,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:41:04,765 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1518313747, now seen corresponding path program 1 times [2021-10-21 19:41:04,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:41:04,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747623149] [2021-10-21 19:41:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:04,768 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:41:04,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:41:04,769 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:41:04,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:41:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:04,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:41:04,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:05,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:41:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:05,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:41:05,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747623149] [2021-10-21 19:41:05,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747623149] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:05,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:05,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-21 19:41:05,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247630007] [2021-10-21 19:41:05,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:41:05,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:41:05,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:41:05,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:41:05,128 INFO L87 Difference]: Start difference. First operand 86 states and 115 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) [2021-10-21 19:41:05,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:05,365 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2021-10-21 19:41:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:41:05,379 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 19 [2021-10-21 19:41:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:05,382 INFO L225 Difference]: With dead ends: 226 [2021-10-21 19:41:05,382 INFO L226 Difference]: Without dead ends: 200 [2021-10-21 19:41:05,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:41:05,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-21 19:41:05,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2021-10-21 19:41:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 112 states have (on average 1.4464285714285714) internal successors, (162), 118 states have internal predecessors, (162), 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) [2021-10-21 19:41:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2021-10-21 19:41:05,400 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2021-10-21 19:41:05,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:05,401 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2021-10-21 19:41:05,401 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) [2021-10-21 19:41:05,401 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2021-10-21 19:41:05,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:41:05,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:05,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:05,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:05,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:41:05,604 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:05,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2021-10-21 19:41:05,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:41:05,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228889695] [2021-10-21 19:41:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:05,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:41:05,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:41:05,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:41:05,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:41:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:05,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:41:05,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:05,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:41:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:05,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:41:05,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228889695] [2021-10-21 19:41:05,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228889695] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:05,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:05,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-21 19:41:05,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798838694] [2021-10-21 19:41:05,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:41:05,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:41:05,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:41:05,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:41:05,911 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) [2021-10-21 19:41:06,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:06,211 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2021-10-21 19:41:06,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:41:06,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 19 [2021-10-21 19:41:06,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:06,214 INFO L225 Difference]: With dead ends: 214 [2021-10-21 19:41:06,214 INFO L226 Difference]: Without dead ends: 185 [2021-10-21 19:41:06,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 137.3ms TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:41:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-21 19:41:06,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2021-10-21 19:41:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 101 states have (on average 1.4257425742574257) internal successors, (144), 107 states have internal predecessors, (144), 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) [2021-10-21 19:41:06,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2021-10-21 19:41:06,229 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2021-10-21 19:41:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:06,230 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2021-10-21 19:41:06,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) [2021-10-21 19:41:06,230 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2021-10-21 19:41:06,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:41:06,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:06,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:06,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:06,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:41:06,445 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:06,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:06,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1649339140, now seen corresponding path program 1 times [2021-10-21 19:41:06,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:41:06,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329128798] [2021-10-21 19:41:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:06,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:41:06,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:41:06,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:41:06,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:41:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:06,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:41:06,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:06,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:41:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:06,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:41:06,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329128798] [2021-10-21 19:41:06,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329128798] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:06,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:06,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-10-21 19:41:06,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655044727] [2021-10-21 19:41:06,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:41:06,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:41:06,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:41:06,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:41:06,780 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2021-10-21 19:41:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:07,071 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2021-10-21 19:41:07,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:41:07,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 23 [2021-10-21 19:41:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:07,074 INFO L225 Difference]: With dead ends: 183 [2021-10-21 19:41:07,074 INFO L226 Difference]: Without dead ends: 179 [2021-10-21 19:41:07,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 141.7ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:41:07,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-21 19:41:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2021-10-21 19:41:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 118 states have (on average 1.4067796610169492) internal successors, (166), 124 states have internal predecessors, (166), 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) [2021-10-21 19:41:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2021-10-21 19:41:07,089 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2021-10-21 19:41:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:07,089 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2021-10-21 19:41:07,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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) [2021-10-21 19:41:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2021-10-21 19:41:07,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:41:07,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:07,092 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:07,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:07,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:41:07,312 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:07,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:07,312 INFO L82 PathProgramCache]: Analyzing trace with hash 207332738, now seen corresponding path program 1 times [2021-10-21 19:41:07,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:41:07,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190049881] [2021-10-21 19:41:07,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:07,314 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:41:07,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:41:07,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:41:07,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:41:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:07,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:41:07,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:07,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:07,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:41:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:07,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:41:07,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190049881] [2021-10-21 19:41:07,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190049881] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:07,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:07,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-21 19:41:07,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567953865] [2021-10-21 19:41:07,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:41:07,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:41:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:41:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:41:07,582 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-10-21 19:41:07,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:07,751 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2021-10-21 19:41:07,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:41:07,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 23 [2021-10-21 19:41:07,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:07,753 INFO L225 Difference]: With dead ends: 182 [2021-10-21 19:41:07,753 INFO L226 Difference]: Without dead ends: 149 [2021-10-21 19:41:07,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 72.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:41:07,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-21 19:41:07,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2021-10-21 19:41:07,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 112 states have (on average 1.3928571428571428) internal successors, (156), 118 states have internal predecessors, (156), 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) [2021-10-21 19:41:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2021-10-21 19:41:07,764 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2021-10-21 19:41:07,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:07,765 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2021-10-21 19:41:07,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2021-10-21 19:41:07,765 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2021-10-21 19:41:07,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:41:07,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:07,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:07,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:07,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:41:07,981 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:07,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:07,981 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2021-10-21 19:41:07,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:41:07,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031118953] [2021-10-21 19:41:07,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:07,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:41:07,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:41:07,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:41:07,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 19:41:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:08,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:41:08,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:08,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:08,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:41:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:08,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:41:08,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031118953] [2021-10-21 19:41:08,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031118953] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:08,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:08,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-10-21 19:41:08,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885955397] [2021-10-21 19:41:08,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:41:08,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:41:08,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:41:08,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:41:08,316 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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) [2021-10-21 19:41:08,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:08,966 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2021-10-21 19:41:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-21 19:41:08,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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 23 [2021-10-21 19:41:08,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:08,969 INFO L225 Difference]: With dead ends: 369 [2021-10-21 19:41:08,969 INFO L226 Difference]: Without dead ends: 323 [2021-10-21 19:41:08,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 318.3ms TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-10-21 19:41:08,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-21 19:41:08,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 129. [2021-10-21 19:41:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 128 states have internal predecessors, (172), 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) [2021-10-21 19:41:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2021-10-21 19:41:08,985 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2021-10-21 19:41:08,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:08,985 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2021-10-21 19:41:08,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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) [2021-10-21 19:41:08,986 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2021-10-21 19:41:08,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 19:41:08,987 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:08,987 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:09,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:09,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:41:09,200 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:09,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:09,201 INFO L82 PathProgramCache]: Analyzing trace with hash -120407082, now seen corresponding path program 1 times [2021-10-21 19:41:09,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:41:09,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410787114] [2021-10-21 19:41:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:09,202 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:41:09,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:41:09,203 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:41:09,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 19:41:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:09,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:41:09,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:09,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:41:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:09,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:41:09,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410787114] [2021-10-21 19:41:09,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410787114] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:09,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:09,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2021-10-21 19:41:09,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633931638] [2021-10-21 19:41:09,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:41:09,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:41:09,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:41:09,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:41:09,555 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2021-10-21 19:41:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:09,871 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2021-10-21 19:41:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:41:09,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 25 [2021-10-21 19:41:09,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:09,873 INFO L225 Difference]: With dead ends: 179 [2021-10-21 19:41:09,873 INFO L226 Difference]: Without dead ends: 174 [2021-10-21 19:41:09,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 169.5ms TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:41:09,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-21 19:41:09,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2021-10-21 19:41:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.3576642335766422) internal successors, (186), 141 states have internal predecessors, (186), 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) [2021-10-21 19:41:09,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2021-10-21 19:41:09,887 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2021-10-21 19:41:09,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:09,888 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2021-10-21 19:41:09,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2021-10-21 19:41:09,888 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2021-10-21 19:41:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 19:41:09,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:09,890 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:09,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:10,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:41:10,102 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:10,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:10,103 INFO L82 PathProgramCache]: Analyzing trace with hash -118560040, now seen corresponding path program 1 times [2021-10-21 19:41:10,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:41:10,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292794235] [2021-10-21 19:41:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:10,104 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:41:10,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:41:10,105 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:41:10,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 19:41:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:10,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:41:10,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:10,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:41:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:10,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:41:10,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292794235] [2021-10-21 19:41:10,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292794235] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:10,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:10,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-21 19:41:10,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891964864] [2021-10-21 19:41:10,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:41:10,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:41:10,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:41:10,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:41:10,385 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-10-21 19:41:10,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:10,495 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2021-10-21 19:41:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:41:10,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 25 [2021-10-21 19:41:10,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:10,497 INFO L225 Difference]: With dead ends: 159 [2021-10-21 19:41:10,497 INFO L226 Difference]: Without dead ends: 140 [2021-10-21 19:41:10,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:41:10,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-21 19:41:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2021-10-21 19:41:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.36) internal successors, (170), 129 states have internal predecessors, (170), 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) [2021-10-21 19:41:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2021-10-21 19:41:10,510 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2021-10-21 19:41:10,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:10,510 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2021-10-21 19:41:10,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-10-21 19:41:10,511 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2021-10-21 19:41:10,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 19:41:10,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:10,512 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:10,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:10,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:41:10,725 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:10,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:10,725 INFO L82 PathProgramCache]: Analyzing trace with hash -390845998, now seen corresponding path program 1 times [2021-10-21 19:41:10,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:41:10,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55918931] [2021-10-21 19:41:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:10,726 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:41:10,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:41:10,727 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:41:10,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 19:41:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:10,892 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:41:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:41:10,975 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 19:41:10,975 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:41:10,976 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:10,978 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:10,978 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:10,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:10,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:10,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:10,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:11,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:11,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:41:11,194 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:41:11,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:41:11 BoogieIcfgContainer [2021-10-21 19:41:11,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:41:11,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:41:11,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:41:11,237 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:41:11,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:41:03" (3/4) ... [2021-10-21 19:41:11,240 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:41:11,335 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:41:11,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:41:11,337 INFO L168 Benchmark]: Toolchain (without parser) took 8634.12 ms. Allocated memory was 52.4 MB in the beginning and 90.2 MB in the end (delta: 37.7 MB). Free memory was 27.9 MB in the beginning and 33.8 MB in the end (delta: -5.9 MB). Peak memory consumption was 31.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:11,338 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory is still 32.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:41:11,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.68 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 27.7 MB in the beginning and 47.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:11,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.86 ms. Allocated memory is still 67.1 MB. Free memory was 47.5 MB in the beginning and 45.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:11,340 INFO L168 Benchmark]: Boogie Preprocessor took 40.88 ms. Allocated memory is still 67.1 MB. Free memory was 45.2 MB in the beginning and 43.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:11,340 INFO L168 Benchmark]: RCFGBuilder took 627.03 ms. Allocated memory is still 67.1 MB. Free memory was 43.4 MB in the beginning and 39.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:11,341 INFO L168 Benchmark]: TraceAbstraction took 7446.90 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 38.9 MB in the beginning and 37.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:11,347 INFO L168 Benchmark]: Witness Printer took 98.62 ms. Allocated memory is still 90.2 MB. Free memory was 37.2 MB in the beginning and 33.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:11,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory is still 32.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.68 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 27.7 MB in the beginning and 47.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.86 ms. Allocated memory is still 67.1 MB. Free memory was 47.5 MB in the beginning and 45.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.88 ms. Allocated memory is still 67.1 MB. Free memory was 45.2 MB in the beginning and 43.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 627.03 ms. Allocated memory is still 67.1 MB. Free memory was 43.4 MB in the beginning and 39.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7446.90 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 38.9 MB in the beginning and 37.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. * Witness Printer took 98.62 ms. Allocated memory is still 90.2 MB. Free memory was 37.2 MB in the beginning and 33.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 86 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 7307.8ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 23.4ms, AutomataDifference: 2345.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 944 SDtfs, 1516 SDslu, 4241 SDs, 0 SdLazy, 821 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 949.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1010.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=7, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 177.0ms AutomataMinimizationTime, 8 MinimizatonAttempts, 531 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 113.1ms SsaConstructionTime, 296.4ms SatisfiabilityAnalysisTime, 1602.5ms InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 626 SizeOfPredicates, 44 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:41:11,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e37f234-668d-41b4-87de-e30dc144af76/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...