./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:01:02,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:01:02,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:01:02,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:01:02,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:01:02,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:01:02,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:01:02,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:01:02,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:01:02,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:01:02,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:01:02,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:01:02,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:01:02,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:01:02,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:01:02,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:01:02,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:01:02,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:01:02,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:01:02,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:01:02,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:01:02,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:01:02,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:01:02,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:01:02,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:01:02,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:01:02,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:01:02,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:01:02,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:01:02,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:01:02,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:01:02,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:01:02,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:01:02,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:01:02,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:01:02,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:01:02,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:01:02,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:01:02,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:01:02,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:01:02,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:01:02,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:01:02,490 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:01:02,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:01:02,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:01:02,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:01:02,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:01:02,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:01:02,494 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:01:02,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:01:02,495 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:01:02,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:01:02,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:01:02,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:01:02,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:01:02,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:01:02,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:01:02,497 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:01:02,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:01:02,497 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:01:02,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:01:02,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:01:02,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:01:02,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:01:02,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:01:02,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:01:02,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:01:02,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:01:02,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:01:02,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:01:02,501 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:01:02,501 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:01:02,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:01:02,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:01:02,502 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_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d [2021-10-28 23:01:02,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:01:02,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:01:02,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:01:02,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:01:02,859 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:01:02,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-10-28 23:01:02,964 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/data/dde6274d9/6fa0f285981b4512ac91ca89866913fd/FLAG4decb444e [2021-10-28 23:01:03,549 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:01:03,550 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-10-28 23:01:03,569 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/data/dde6274d9/6fa0f285981b4512ac91ca89866913fd/FLAG4decb444e [2021-10-28 23:01:03,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/data/dde6274d9/6fa0f285981b4512ac91ca89866913fd [2021-10-28 23:01:03,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:01:03,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:01:03,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:01:03,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:01:03,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:01:03,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:01:03" (1/1) ... [2021-10-28 23:01:03,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba9b30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:03, skipping insertion in model container [2021-10-28 23:01:03,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:01:03" (1/1) ... [2021-10-28 23:01:03,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:01:03,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:01:04,204 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_fe598403-0744-4afa-9458-2819d2112e2a/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-10-28 23:01:04,209 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_fe598403-0744-4afa-9458-2819d2112e2a/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-10-28 23:01:04,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:01:04,220 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:01:04,246 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_fe598403-0744-4afa-9458-2819d2112e2a/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-10-28 23:01:04,248 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-10-28 23:01:04,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:01:04,265 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:01:04,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:04 WrapperNode [2021-10-28 23:01:04,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:01:04,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:01:04,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:01:04,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:01:04,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:04" (1/1) ... [2021-10-28 23:01:04,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:04" (1/1) ... [2021-10-28 23:01:04,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:01:04,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:01:04,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:01:04,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:01:04,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:04" (1/1) ... [2021-10-28 23:01:04,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:04" (1/1) ... [2021-10-28 23:01:04,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:04" (1/1) ... [2021-10-28 23:01:04,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:04" (1/1) ... [2021-10-28 23:01:04,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:04" (1/1) ... [2021-10-28 23:01:04,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:04" (1/1) ... [2021-10-28 23:01:04,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:04" (1/1) ... [2021-10-28 23:01:04,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:01:04,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:01:04,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:01:04,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:01:04,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:04" (1/1) ... [2021-10-28 23:01:04,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:01:04,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:01:04,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:01:04,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:01:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:01:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:01:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-28 23:01:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:01:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:01:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:01:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:01:04,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:01:04,952 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-28 23:01:04,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:04 BoogieIcfgContainer [2021-10-28 23:01:04,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:01:04,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:01:04,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:01:04,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:01:04,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:01:03" (1/3) ... [2021-10-28 23:01:04,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e366a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:01:04, skipping insertion in model container [2021-10-28 23:01:04,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:04" (2/3) ... [2021-10-28 23:01:04,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e366a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:01:04, skipping insertion in model container [2021-10-28 23:01:04,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:04" (3/3) ... [2021-10-28 23:01:04,980 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2021-10-28 23:01:05,003 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:01:05,003 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 23:01:05,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:01:05,107 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:01:05,107 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 23:01:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:05,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:01:05,142 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:05,144 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:05,145 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:05,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:05,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-10-28 23:01:05,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:05,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659236446] [2021-10-28 23:01:05,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:05,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:05,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:05,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659236446] [2021-10-28 23:01:05,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659236446] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:05,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:05,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:05,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823385873] [2021-10-28 23:01:05,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:05,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:05,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:05,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:05,546 INFO L87 Difference]: Start difference. First operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 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 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:05,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:05,651 INFO L93 Difference]: Finished difference Result 90 states and 134 transitions. [2021-10-28 23:01:05,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:01:05,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-28 23:01:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:05,666 INFO L225 Difference]: With dead ends: 90 [2021-10-28 23:01:05,667 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 23:01:05,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:05,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 23:01:05,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-10-28 23:01:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 44 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-10-28 23:01:05,724 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 16 [2021-10-28 23:01:05,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:05,725 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-10-28 23:01:05,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:05,726 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-10-28 23:01:05,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:01:05,729 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:05,729 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:05,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:01:05,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:05,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:05,734 INFO L85 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-10-28 23:01:05,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:05,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525432484] [2021-10-28 23:01:05,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:05,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:05,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:05,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525432484] [2021-10-28 23:01:05,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525432484] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:05,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:05,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:05,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804280293] [2021-10-28 23:01:05,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:05,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:05,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:05,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:05,874 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:05,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:05,922 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-10-28 23:01:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:05,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 23:01:05,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:05,925 INFO L225 Difference]: With dead ends: 77 [2021-10-28 23:01:05,926 INFO L226 Difference]: Without dead ends: 64 [2021-10-28 23:01:05,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:05,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-28 23:01:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2021-10-28 23:01:05,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:05,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-28 23:01:05,937 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-10-28 23:01:05,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:05,937 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-28 23:01:05,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-28 23:01:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:01:05,939 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:05,940 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:05,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:01:05,940 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:05,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:05,941 INFO L85 PathProgramCache]: Analyzing trace with hash -674173253, now seen corresponding path program 1 times [2021-10-28 23:01:05,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:05,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975837036] [2021-10-28 23:01:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:05,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:06,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:06,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975837036] [2021-10-28 23:01:06,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975837036] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:06,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:06,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:06,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093682572] [2021-10-28 23:01:06,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:06,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:06,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:06,048 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:06,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:06,141 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-10-28 23:01:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:06,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 [2021-10-28 23:01:06,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:06,146 INFO L225 Difference]: With dead ends: 79 [2021-10-28 23:01:06,147 INFO L226 Difference]: Without dead ends: 66 [2021-10-28 23:01:06,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-28 23:01:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2021-10-28 23:01:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:06,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-28 23:01:06,161 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2021-10-28 23:01:06,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:06,162 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-28 23:01:06,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:06,163 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-28 23:01:06,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:01:06,164 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:06,164 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:06,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:01:06,165 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:06,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:06,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1345927737, now seen corresponding path program 1 times [2021-10-28 23:01:06,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:06,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970663319] [2021-10-28 23:01:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:06,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:06,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:06,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970663319] [2021-10-28 23:01:06,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970663319] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:06,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:06,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:06,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449636334] [2021-10-28 23:01:06,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:06,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:06,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:06,241 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:06,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:06,329 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2021-10-28 23:01:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:06,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 23:01:06,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:06,331 INFO L225 Difference]: With dead ends: 81 [2021-10-28 23:01:06,332 INFO L226 Difference]: Without dead ends: 68 [2021-10-28 23:01:06,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:06,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-28 23:01:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2021-10-28 23:01:06,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-28 23:01:06,359 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 20 [2021-10-28 23:01:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:06,359 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-28 23:01:06,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-28 23:01:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:01:06,361 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:06,362 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:06,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:01:06,362 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-10-28 23:01:06,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:06,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558564150] [2021-10-28 23:01:06,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:06,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:06,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:06,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558564150] [2021-10-28 23:01:06,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558564150] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:06,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:06,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:01:06,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365873230] [2021-10-28 23:01:06,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:01:06,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:06,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:01:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:01:06,443 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:06,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:06,468 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2021-10-28 23:01:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:01:06,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-10-28 23:01:06,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:06,472 INFO L225 Difference]: With dead ends: 50 [2021-10-28 23:01:06,474 INFO L226 Difference]: Without dead ends: 48 [2021-10-28 23:01:06,475 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:01:06,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-28 23:01:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-28 23:01:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 47 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:06,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2021-10-28 23:01:06,490 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 21 [2021-10-28 23:01:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:06,494 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2021-10-28 23:01:06,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2021-10-28 23:01:06,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:01:06,496 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:06,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:06,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:01:06,497 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:06,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:06,498 INFO L85 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-10-28 23:01:06,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:06,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683181551] [2021-10-28 23:01:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:06,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:01:06,575 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:01:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:01:06,693 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:01:06,696 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:01:06,698 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:06,700 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:06,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:01:06,705 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-28 23:01:06,708 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:01:06,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:01:06 BoogieIcfgContainer [2021-10-28 23:01:06,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:01:06,761 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:01:06,761 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:01:06,761 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:01:06,762 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:04" (3/4) ... [2021-10-28 23:01:06,766 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:01:06,766 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:01:06,769 INFO L168 Benchmark]: Toolchain (without parser) took 2850.11 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 59.3 MB in the beginning and 95.6 MB in the end (delta: -36.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:01:06,769 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 64.9 MB in the beginning and 64.9 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:01:06,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.90 ms. Allocated memory is still 94.4 MB. Free memory was 58.9 MB in the beginning and 68.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:06,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.19 ms. Allocated memory is still 94.4 MB. Free memory was 68.2 MB in the beginning and 66.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:06,776 INFO L168 Benchmark]: Boogie Preprocessor took 39.83 ms. Allocated memory is still 94.4 MB. Free memory was 66.2 MB in the beginning and 64.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:06,776 INFO L168 Benchmark]: RCFGBuilder took 572.32 ms. Allocated memory is still 94.4 MB. Free memory was 64.5 MB in the beginning and 49.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:06,777 INFO L168 Benchmark]: TraceAbstraction took 1787.65 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 49.1 MB in the beginning and 96.7 MB in the end (delta: -47.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:06,778 INFO L168 Benchmark]: Witness Printer took 5.43 ms. Allocated memory is still 125.8 MB. Free memory was 96.7 MB in the beginning and 95.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:06,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 64.9 MB in the beginning and 64.9 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.90 ms. Allocated memory is still 94.4 MB. Free memory was 58.9 MB in the beginning and 68.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.19 ms. Allocated memory is still 94.4 MB. Free memory was 68.2 MB in the beginning and 66.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.83 ms. Allocated memory is still 94.4 MB. Free memory was 66.2 MB in the beginning and 64.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 572.32 ms. Allocated memory is still 94.4 MB. Free memory was 64.5 MB in the beginning and 49.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1787.65 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 49.1 MB in the beginning and 96.7 MB in the end (delta: -47.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.43 ms. Allocated memory is still 125.8 MB. Free memory was 96.7 MB in the beginning and 95.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 76]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L57] return x != x; [L69] EXPR isnan_float(x) && !isnan_float(y) [L57] return x != x; [L69] EXPR isnan_float(x) && !isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L69-L70] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L72] float res = fmax_float(x, y); [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L75] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L76] reach_error() - UnprovableResult [Line: 82]: 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, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 343 SDtfs, 79 SDslu, 503 SDs, 0 SdLazy, 88 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=5, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 62 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:01:06,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:01:09,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:01:09,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:01:09,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:01:09,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:01:09,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:01:09,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:01:09,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:01:09,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:01:09,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:01:09,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:01:09,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:01:09,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:01:09,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:01:09,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:01:09,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:01:09,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:01:09,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:01:09,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:01:09,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:01:09,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:01:09,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:01:09,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:01:09,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:01:09,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:01:09,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:01:09,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:01:09,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:01:09,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:01:09,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:01:09,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:01:09,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:01:09,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:01:09,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:01:09,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:01:09,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:01:09,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:01:09,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:01:09,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:01:09,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:01:09,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:01:09,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:01:09,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:01:09,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:01:09,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:01:09,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:01:09,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:01:09,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:01:09,969 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:01:09,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:01:09,970 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:01:09,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:01:09,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:01:09,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:01:09,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:01:09,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:01:09,972 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:01:09,972 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:01:09,973 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:01:09,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:01:09,973 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:01:09,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:01:09,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:01:09,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:01:09,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:01:09,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:01:09,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:01:09,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:01:09,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:01:09,976 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:01:09,977 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:01:09,977 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:01:09,977 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:01:09,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:01:09,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:01:09,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:01:09,978 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_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d [2021-10-28 23:01:10,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:01:10,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:01:10,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:01:10,411 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:01:10,412 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:01:10,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-10-28 23:01:10,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/data/d5f3d9e05/81dfc2933f844f7d97f8e7adc203fb94/FLAGe0a8c1420 [2021-10-28 23:01:11,257 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:01:11,262 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2021-10-28 23:01:11,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/data/d5f3d9e05/81dfc2933f844f7d97f8e7adc203fb94/FLAGe0a8c1420 [2021-10-28 23:01:11,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/data/d5f3d9e05/81dfc2933f844f7d97f8e7adc203fb94 [2021-10-28 23:01:11,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:01:11,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:01:11,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:01:11,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:01:11,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:01:11,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:01:11" (1/1) ... [2021-10-28 23:01:11,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771c5abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11, skipping insertion in model container [2021-10-28 23:01:11,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:01:11" (1/1) ... [2021-10-28 23:01:11,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:01:11,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:01:11,749 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_fe598403-0744-4afa-9458-2819d2112e2a/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-10-28 23:01:11,754 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_fe598403-0744-4afa-9458-2819d2112e2a/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-10-28 23:01:11,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:01:11,772 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:01:11,800 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_fe598403-0744-4afa-9458-2819d2112e2a/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2021-10-28 23:01:11,801 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_fe598403-0744-4afa-9458-2819d2112e2a/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2021-10-28 23:01:11,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:01:11,822 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:01:11,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11 WrapperNode [2021-10-28 23:01:11,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:01:11,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:01:11,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:01:11,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:01:11,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11" (1/1) ... [2021-10-28 23:01:11,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11" (1/1) ... [2021-10-28 23:01:11,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:01:11,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:01:11,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:01:11,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:01:11,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11" (1/1) ... [2021-10-28 23:01:11,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11" (1/1) ... [2021-10-28 23:01:11,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11" (1/1) ... [2021-10-28 23:01:11,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11" (1/1) ... [2021-10-28 23:01:11,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11" (1/1) ... [2021-10-28 23:01:11,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11" (1/1) ... [2021-10-28 23:01:11,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11" (1/1) ... [2021-10-28 23:01:11,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:01:11,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:01:11,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:01:11,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:01:11,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11" (1/1) ... [2021-10-28 23:01:11,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:01:11,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:01:12,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:01:12,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:01:12,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:01:12,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:01:12,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:01:12,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:01:12,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:01:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-28 23:01:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:01:12,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:01:12,567 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-28 23:01:12,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:12 BoogieIcfgContainer [2021-10-28 23:01:12,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:01:12,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:01:12,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:01:12,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:01:12,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:01:11" (1/3) ... [2021-10-28 23:01:12,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236da3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:01:12, skipping insertion in model container [2021-10-28 23:01:12,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:11" (2/3) ... [2021-10-28 23:01:12,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236da3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:01:12, skipping insertion in model container [2021-10-28 23:01:12,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:12" (3/3) ... [2021-10-28 23:01:12,592 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2021-10-28 23:01:12,599 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:01:12,599 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 23:01:12,679 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:01:12,692 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:01:12,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 23:01:12,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:12,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:01:12,743 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:12,744 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:12,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:12,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:12,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-10-28 23:01:12,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:12,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363723311] [2021-10-28 23:01:12,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:12,771 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:12,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:12,778 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:12,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:01:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:12,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:01:12,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:13,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:13,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:13,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363723311] [2021-10-28 23:01:13,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363723311] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:13,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:13,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:01:13,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100673319] [2021-10-28 23:01:13,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:01:13,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:01:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:01:13,219 INFO L87 Difference]: Start difference. First operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:13,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:13,243 INFO L93 Difference]: Finished difference Result 82 states and 122 transitions. [2021-10-28 23:01:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:01:13,245 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-28 23:01:13,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:13,256 INFO L225 Difference]: With dead ends: 82 [2021-10-28 23:01:13,256 INFO L226 Difference]: Without dead ends: 43 [2021-10-28 23:01:13,260 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:01:13,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-28 23:01:13,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-28 23:01:13,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2021-10-28 23:01:13,303 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2021-10-28 23:01:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:13,304 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2021-10-28 23:01:13,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:13,305 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2021-10-28 23:01:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:01:13,306 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:13,306 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:13,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:13,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:13,522 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:13,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:13,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2021-10-28 23:01:13,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:13,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700850151] [2021-10-28 23:01:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:13,525 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:13,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:13,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:13,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:01:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:13,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:01:13,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:13,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:13,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:13,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700850151] [2021-10-28 23:01:13,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700850151] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:13,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:13,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 23:01:13,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919683638] [2021-10-28 23:01:13,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:13,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:13,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:13,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:13,825 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:13,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:13,925 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2021-10-28 23:01:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:01:13,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-28 23:01:13,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:13,929 INFO L225 Difference]: With dead ends: 82 [2021-10-28 23:01:13,929 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 23:01:13,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:13,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 23:01:13,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-10-28 23:01:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 44 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-10-28 23:01:13,943 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2021-10-28 23:01:13,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:13,943 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-10-28 23:01:13,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-10-28 23:01:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:01:13,946 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:13,953 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:13,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:14,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:14,170 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:14,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:14,171 INFO L85 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-10-28 23:01:14,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:14,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180896171] [2021-10-28 23:01:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:14,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:14,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:14,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:14,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:01:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:14,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:01:14,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:14,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:14,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:14,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180896171] [2021-10-28 23:01:14,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180896171] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:14,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:14,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 23:01:14,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049078096] [2021-10-28 23:01:14,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:01:14,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:14,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:01:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:01:14,456 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:14,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:14,541 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2021-10-28 23:01:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:01:14,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 23:01:14,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:14,543 INFO L225 Difference]: With dead ends: 96 [2021-10-28 23:01:14,544 INFO L226 Difference]: Without dead ends: 83 [2021-10-28 23:01:14,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:01:14,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-28 23:01:14,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2021-10-28 23:01:14,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-28 23:01:14,554 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-10-28 23:01:14,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:14,567 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-28 23:01:14,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:14,568 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-28 23:01:14,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:01:14,569 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:14,569 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:14,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:14,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:14,784 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:14,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:14,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-10-28 23:01:14,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:14,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385250525] [2021-10-28 23:01:14,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:14,786 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:14,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:14,787 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:14,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:01:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:14,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:01:14,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:15,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:15,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:15,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385250525] [2021-10-28 23:01:15,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385250525] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:15,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:15,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-28 23:01:15,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2693940] [2021-10-28 23:01:15,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:01:15,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:15,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:01:15,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:01:15,454 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:15,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:15,932 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2021-10-28 23:01:15,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:01:15,934 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-28 23:01:15,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:15,937 INFO L225 Difference]: With dead ends: 149 [2021-10-28 23:01:15,937 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 23:01:15,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:01:15,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 23:01:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2021-10-28 23:01:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 74 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:15,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2021-10-28 23:01:15,957 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2021-10-28 23:01:15,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:15,958 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2021-10-28 23:01:15,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:15,958 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2021-10-28 23:01:15,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:01:15,960 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:15,960 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:15,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:16,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:16,176 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-10-28 23:01:16,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:16,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90442918] [2021-10-28 23:01:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:16,178 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:16,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:16,179 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:16,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:01:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:16,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:01:16,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:17,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:17,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:17,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90442918] [2021-10-28 23:01:17,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90442918] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:17,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:17,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-28 23:01:17,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418596704] [2021-10-28 23:01:17,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:01:17,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:17,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:01:17,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:01:17,469 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:18,731 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2021-10-28 23:01:18,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 23:01:18,732 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-28 23:01:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:18,735 INFO L225 Difference]: With dead ends: 180 [2021-10-28 23:01:18,735 INFO L226 Difference]: Without dead ends: 178 [2021-10-28 23:01:18,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2021-10-28 23:01:18,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-28 23:01:18,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2021-10-28 23:01:18,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 88 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:18,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-10-28 23:01:18,771 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2021-10-28 23:01:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:18,772 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-10-28 23:01:18,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-10-28 23:01:18,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:01:18,778 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:18,779 INFO L513 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] [2021-10-28 23:01:18,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:18,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:18,995 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:18,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:18,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2021-10-28 23:01:18,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:18,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183951557] [2021-10-28 23:01:18,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:18,997 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:18,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:18,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:19,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:01:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:19,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:01:19,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:19,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:19,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:19,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183951557] [2021-10-28 23:01:19,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183951557] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:19,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:19,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-10-28 23:01:19,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766671470] [2021-10-28 23:01:19,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:01:19,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:01:19,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:01:19,559 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:20,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:20,226 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2021-10-28 23:01:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:01:20,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-28 23:01:20,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:20,228 INFO L225 Difference]: With dead ends: 166 [2021-10-28 23:01:20,228 INFO L226 Difference]: Without dead ends: 131 [2021-10-28 23:01:20,229 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:01:20,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-28 23:01:20,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2021-10-28 23:01:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3793103448275863) internal successors, (120), 88 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2021-10-28 23:01:20,242 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2021-10-28 23:01:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:20,242 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2021-10-28 23:01:20,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:20,247 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2021-10-28 23:01:20,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:01:20,248 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:20,248 INFO L513 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] [2021-10-28 23:01:20,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:20,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:20,456 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:20,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:20,457 INFO L85 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2021-10-28 23:01:20,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:20,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528524083] [2021-10-28 23:01:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:20,458 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:20,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:20,459 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:20,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 23:01:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:20,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:01:20,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:20,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:20,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:20,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528524083] [2021-10-28 23:01:20,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528524083] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:20,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:20,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 23:01:20,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996720724] [2021-10-28 23:01:20,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:01:20,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:20,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:01:20,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:01:20,796 INFO L87 Difference]: Start difference. First operand 89 states and 120 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) [2021-10-28 23:01:20,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:20,942 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2021-10-28 23:01:20,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:01:20,944 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 24 [2021-10-28 23:01:20,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:20,945 INFO L225 Difference]: With dead ends: 157 [2021-10-28 23:01:20,945 INFO L226 Difference]: Without dead ends: 141 [2021-10-28 23:01:20,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:01:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-28 23:01:20,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2021-10-28 23:01:20,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:20,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-28 23:01:20,961 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-28 23:01:20,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:20,961 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-28 23:01:20,961 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) [2021-10-28 23:01:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-28 23:01:20,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:01:20,963 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:20,963 INFO L513 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] [2021-10-28 23:01:20,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-28 23:01:21,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:21,180 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2021-10-28 23:01:21,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:21,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229386770] [2021-10-28 23:01:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:21,181 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:21,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:21,184 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:21,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 23:01:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:21,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:01:21,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:21,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:21,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:21,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229386770] [2021-10-28 23:01:21,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229386770] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:21,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:21,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 23:01:21,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113226061] [2021-10-28 23:01:21,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:01:21,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:01:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:01:21,474 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:21,507 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2021-10-28 23:01:21,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:01:21,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-10-28 23:01:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:21,509 INFO L225 Difference]: With dead ends: 96 [2021-10-28 23:01:21,509 INFO L226 Difference]: Without dead ends: 94 [2021-10-28 23:01:21,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:01:21,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-28 23:01:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-10-28 23:01:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-28 23:01:21,522 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-28 23:01:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:21,522 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-28 23:01:21,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:21,523 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-28 23:01:21,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:01:21,535 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:21,536 INFO L513 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] [2021-10-28 23:01:21,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:21,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:21,752 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:21,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:21,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1741974657, now seen corresponding path program 1 times [2021-10-28 23:01:21,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:21,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353169391] [2021-10-28 23:01:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:21,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:21,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:21,755 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:21,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 23:01:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:21,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:01:21,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:22,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:22,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:22,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353169391] [2021-10-28 23:01:22,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353169391] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:22,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:22,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-28 23:01:22,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661284117] [2021-10-28 23:01:22,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:01:22,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:01:22,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:01:22,362 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:23,004 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2021-10-28 23:01:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:01:23,005 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-28 23:01:23,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:23,006 INFO L225 Difference]: With dead ends: 131 [2021-10-28 23:01:23,006 INFO L226 Difference]: Without dead ends: 118 [2021-10-28 23:01:23,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:01:23,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-28 23:01:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2021-10-28 23:01:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 88 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2021-10-28 23:01:23,017 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2021-10-28 23:01:23,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:23,017 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2021-10-28 23:01:23,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2021-10-28 23:01:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:01:23,019 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:23,019 INFO L513 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] [2021-10-28 23:01:23,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:23,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:23,235 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:23,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:23,236 INFO L85 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2021-10-28 23:01:23,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:23,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22105856] [2021-10-28 23:01:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:23,237 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:23,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:23,238 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:23,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 23:01:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:23,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:01:23,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:23,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:23,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:23,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22105856] [2021-10-28 23:01:23,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22105856] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:23,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:23,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-10-28 23:01:23,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651940228] [2021-10-28 23:01:23,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:01:23,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:23,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:01:23,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:01:23,840 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:24,483 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2021-10-28 23:01:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:01:24,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-28 23:01:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:24,485 INFO L225 Difference]: With dead ends: 114 [2021-10-28 23:01:24,485 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 23:01:24,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:01:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 23:01:24,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-28 23:01:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 75 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-10-28 23:01:24,498 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2021-10-28 23:01:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:24,499 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-10-28 23:01:24,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-10-28 23:01:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:01:24,500 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:24,500 INFO L513 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] [2021-10-28 23:01:24,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:24,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:24,716 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:24,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:24,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2021-10-28 23:01:24,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:24,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198163061] [2021-10-28 23:01:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:24,717 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:24,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:24,719 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:24,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 23:01:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:24,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:01:24,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:25,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:25,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:25,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198163061] [2021-10-28 23:01:25,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198163061] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:25,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:25,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-10-28 23:01:25,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447481750] [2021-10-28 23:01:25,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:01:25,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:25,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:01:25,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:01:25,325 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:25,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:25,667 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2021-10-28 23:01:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:01:25,667 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-28 23:01:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:25,668 INFO L225 Difference]: With dead ends: 84 [2021-10-28 23:01:25,668 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 23:01:25,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:01:25,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 23:01:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-28 23:01:25,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 73 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2021-10-28 23:01:25,675 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2021-10-28 23:01:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:25,675 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2021-10-28 23:01:25,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:25,676 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2021-10-28 23:01:25,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:01:25,677 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:25,677 INFO L513 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, 1] [2021-10-28 23:01:25,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:25,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:25,894 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:25,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:25,894 INFO L85 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2021-10-28 23:01:25,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:25,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513822758] [2021-10-28 23:01:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:25,895 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:25,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:25,897 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:25,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 23:01:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:26,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:01:26,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:26,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:26,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:26,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513822758] [2021-10-28 23:01:26,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513822758] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:26,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:26,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-28 23:01:26,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917458204] [2021-10-28 23:01:26,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:01:26,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:01:26,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:01:26,895 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:27,287 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2021-10-28 23:01:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:01:27,288 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 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 26 [2021-10-28 23:01:27,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:27,289 INFO L225 Difference]: With dead ends: 82 [2021-10-28 23:01:27,289 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 23:01:27,290 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:01:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 23:01:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-28 23:01:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 73 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-10-28 23:01:27,296 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2021-10-28 23:01:27,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:27,296 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-10-28 23:01:27,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:27,296 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-10-28 23:01:27,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:01:27,297 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:27,297 INFO L513 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, 1] [2021-10-28 23:01:27,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:27,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:27,498 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:27,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:27,498 INFO L85 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2021-10-28 23:01:27,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:27,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131704963] [2021-10-28 23:01:27,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:27,499 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:27,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:27,501 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:27,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 23:01:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:27,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:01:27,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:28,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:28,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:28,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131704963] [2021-10-28 23:01:28,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131704963] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:28,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:28,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-28 23:01:28,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841050205] [2021-10-28 23:01:28,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 23:01:28,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:28,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 23:01:28,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:01:28,657 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:32,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:32,220 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-10-28 23:01:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:01:32,220 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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 26 [2021-10-28 23:01:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:32,222 INFO L225 Difference]: With dead ends: 154 [2021-10-28 23:01:32,222 INFO L226 Difference]: Without dead ends: 134 [2021-10-28 23:01:32,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-10-28 23:01:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-28 23:01:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2021-10-28 23:01:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2021-10-28 23:01:32,231 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2021-10-28 23:01:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:32,232 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2021-10-28 23:01:32,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2021-10-28 23:01:32,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:01:32,233 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:32,233 INFO L513 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, 1, 1] [2021-10-28 23:01:32,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:32,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:32,451 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:32,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:32,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2021-10-28 23:01:32,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:32,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052247618] [2021-10-28 23:01:32,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:32,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:32,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:32,454 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:32,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-28 23:01:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:32,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 23:01:32,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:33,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:33,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:33,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052247618] [2021-10-28 23:01:33,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052247618] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:33,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:33,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2021-10-28 23:01:33,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619005261] [2021-10-28 23:01:33,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:01:33,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:33,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:01:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:01:33,650 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:35,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:35,904 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2021-10-28 23:01:35,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-28 23:01:35,905 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 27 [2021-10-28 23:01:35,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:35,906 INFO L225 Difference]: With dead ends: 195 [2021-10-28 23:01:35,906 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 23:01:35,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2021-10-28 23:01:35,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 23:01:35,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2021-10-28 23:01:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-10-28 23:01:35,915 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2021-10-28 23:01:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:35,915 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-10-28 23:01:35,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-10-28 23:01:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:01:35,916 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:35,916 INFO L513 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, 1, 1, 1] [2021-10-28 23:01:35,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-28 23:01:36,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:36,134 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:36,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:36,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1364791880, now seen corresponding path program 1 times [2021-10-28 23:01:36,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:36,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347365795] [2021-10-28 23:01:36,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:36,135 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:36,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:36,136 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:36,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-28 23:01:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:36,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 23:01:36,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:36,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:37,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:37,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347365795] [2021-10-28 23:01:37,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347365795] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:37,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:37,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-10-28 23:01:37,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812424864] [2021-10-28 23:01:37,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:01:37,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:37,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:01:37,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:01:37,285 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:38,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:38,732 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2021-10-28 23:01:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 23:01:38,733 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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 28 [2021-10-28 23:01:38,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:38,734 INFO L225 Difference]: With dead ends: 125 [2021-10-28 23:01:38,734 INFO L226 Difference]: Without dead ends: 101 [2021-10-28 23:01:38,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2021-10-28 23:01:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-28 23:01:38,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2021-10-28 23:01:38,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-10-28 23:01:38,742 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2021-10-28 23:01:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:38,742 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-10-28 23:01:38,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-10-28 23:01:38,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:01:38,743 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:38,743 INFO L513 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:38,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:38,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:38,944 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:38,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash 430789518, now seen corresponding path program 1 times [2021-10-28 23:01:38,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:38,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191235796] [2021-10-28 23:01:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:38,946 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:38,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:38,947 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:38,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-28 23:01:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:39,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:01:39,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:39,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:40,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:40,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191235796] [2021-10-28 23:01:40,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191235796] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:40,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:40,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-28 23:01:40,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375973233] [2021-10-28 23:01:40,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:01:40,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:40,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:01:40,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:01:40,130 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:40,956 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-28 23:01:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:01:40,957 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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 32 [2021-10-28 23:01:40,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:40,957 INFO L225 Difference]: With dead ends: 52 [2021-10-28 23:01:40,958 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 23:01:40,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:01:40,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 23:01:40,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-28 23:01:40,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-10-28 23:01:40,964 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2021-10-28 23:01:40,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:40,964 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-10-28 23:01:40,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:40,964 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-10-28 23:01:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:01:40,965 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:40,965 INFO L513 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:40,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:41,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:41,175 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:41,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:41,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1131854096, now seen corresponding path program 1 times [2021-10-28 23:01:41,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:41,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78501799] [2021-10-28 23:01:41,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:41,176 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:41,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:41,177 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:41,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-28 23:01:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:41,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:01:41,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:41,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:42,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:42,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78501799] [2021-10-28 23:01:42,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78501799] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:42,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:42,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-28 23:01:42,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051385321] [2021-10-28 23:01:42,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:01:42,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:42,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:01:42,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:01:42,301 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:43,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:43,088 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-10-28 23:01:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:01:43,089 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 32 [2021-10-28 23:01:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:43,089 INFO L225 Difference]: With dead ends: 55 [2021-10-28 23:01:43,089 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 23:01:43,090 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-28 23:01:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 23:01:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-10-28 23:01:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-28 23:01:43,097 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2021-10-28 23:01:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:43,098 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-28 23:01:43,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-28 23:01:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 23:01:43,099 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:43,099 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:43,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:43,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:43,310 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:43,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1713269395, now seen corresponding path program 1 times [2021-10-28 23:01:43,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:43,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759440065] [2021-10-28 23:01:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:43,311 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:43,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:43,313 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:43,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-28 23:01:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:43,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:01:43,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:44,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:44,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:44,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759440065] [2021-10-28 23:01:44,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759440065] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:44,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:44,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-28 23:01:44,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949678017] [2021-10-28 23:01:44,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:01:44,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:44,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:01:44,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:01:44,797 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:45,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:45,575 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2021-10-28 23:01:45,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:01:45,576 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 33 [2021-10-28 23:01:45,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:45,577 INFO L225 Difference]: With dead ends: 79 [2021-10-28 23:01:45,577 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 23:01:45,578 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:01:45,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 23:01:45,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2021-10-28 23:01:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:45,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-28 23:01:45,585 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2021-10-28 23:01:45,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:45,586 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-28 23:01:45,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:45,586 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-28 23:01:45,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 23:01:45,587 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:45,587 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:45,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:45,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:45,803 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:45,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:45,804 INFO L85 PathProgramCache]: Analyzing trace with hash 739407273, now seen corresponding path program 1 times [2021-10-28 23:01:45,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:01:45,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862482218] [2021-10-28 23:01:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:45,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:01:45,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:01:45,806 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:01:45,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-28 23:01:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:46,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:01:46,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:01:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:46,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:01:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:01:46,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:01:46,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862482218] [2021-10-28 23:01:46,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862482218] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:46,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:46,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 23:01:46,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253648958] [2021-10-28 23:01:46,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:46,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:01:46,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:46,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:46,496 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:46,533 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-28 23:01:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:46,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-28 23:01:46,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:46,534 INFO L225 Difference]: With dead ends: 39 [2021-10-28 23:01:46,534 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:01:46,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:01:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:01:46,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:01:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:01:46,535 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-28 23:01:46,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:46,536 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:01:46,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:46,536 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:01:46,536 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:01:46,539 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:46,540 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:01:46,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:01:46,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:01:46,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:01:46,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:47,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:01:53,294 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2021-10-28 23:01:53,294 INFO L857 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2021-10-28 23:01:53,294 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 42) no Hoare annotation was computed. [2021-10-28 23:01:53,294 INFO L857 garLoopResultBuilder]: For program point L69-2(line 69) no Hoare annotation was computed. [2021-10-28 23:01:53,294 INFO L857 garLoopResultBuilder]: For program point L36-1(lines 36 42) no Hoare annotation was computed. [2021-10-28 23:01:53,294 INFO L857 garLoopResultBuilder]: For program point L69-3(lines 69 70) no Hoare annotation was computed. [2021-10-28 23:01:53,295 INFO L857 garLoopResultBuilder]: For program point L69-5(lines 69 85) no Hoare annotation was computed. [2021-10-28 23:01:53,295 INFO L857 garLoopResultBuilder]: For program point L69-7(lines 69 85) no Hoare annotation was computed. [2021-10-28 23:01:53,295 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:01:53,295 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:01:53,296 INFO L857 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-10-28 23:01:53,296 INFO L857 garLoopResultBuilder]: For program point L53-2(line 53) no Hoare annotation was computed. [2021-10-28 23:01:53,297 INFO L853 garLoopResultBuilder]: At program point L53-3(lines 45 54) the Hoare annotation is: (let ((.cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|) .cse1) (and .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y .cse2) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) .cse1 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0)) (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (not (fp.eq .cse2 .cse2)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0)))) [2021-10-28 23:01:53,297 INFO L857 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2021-10-28 23:01:53,297 INFO L857 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-10-28 23:01:53,297 INFO L860 garLoopResultBuilder]: At program point L87(lines 59 88) the Hoare annotation is: true [2021-10-28 23:01:53,297 INFO L857 garLoopResultBuilder]: For program point L46(lines 46 48) no Hoare annotation was computed. [2021-10-28 23:01:53,298 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-10-28 23:01:53,298 INFO L857 garLoopResultBuilder]: For program point L39-1(lines 39 42) no Hoare annotation was computed. [2021-10-28 23:01:53,298 INFO L857 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2021-10-28 23:01:53,298 INFO L857 garLoopResultBuilder]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2021-10-28 23:01:53,298 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:01:53,299 INFO L853 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-10-28 23:01:53,299 INFO L853 garLoopResultBuilder]: At program point L57-1(line 57) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short15| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0))) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2021-10-28 23:01:53,299 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2021-10-28 23:01:53,299 INFO L853 garLoopResultBuilder]: At program point L57-2(line 57) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short19|)) (.cse1 (not |ULTIMATE.start_main_#t~short15|)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) .cse0 .cse1 (not .cse2) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 .cse1 .cse2))) [2021-10-28 23:01:53,300 INFO L853 garLoopResultBuilder]: At program point L57-3(line 57) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short18| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0))) (not |ULTIMATE.start_main_#t~short19|) (not |ULTIMATE.start_main_#t~short15|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2021-10-28 23:01:53,300 INFO L853 garLoopResultBuilder]: At program point L57-4(line 57) the Hoare annotation is: (let ((.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse3 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (or (and (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y .cse1) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) .cse2 .cse3 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0)) (and (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|) .cse2 .cse3) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (fp.eq .cse1 .cse1)) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0)))) [2021-10-28 23:01:53,300 INFO L853 garLoopResultBuilder]: At program point L57-5(line 57) the Hoare annotation is: (let ((.cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and |ULTIMATE.start_main_#t~short23| (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 .cse1 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) .cse2 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0)) (and |ULTIMATE.start_main_#t~short23| .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|) .cse2))) [2021-10-28 23:01:53,301 INFO L853 garLoopResultBuilder]: At program point L57-6(line 57) the Hoare annotation is: (or (and (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0))) [2021-10-28 23:01:53,301 INFO L853 garLoopResultBuilder]: At program point L57-7(line 57) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0)) [2021-10-28 23:01:53,301 INFO L857 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2021-10-28 23:01:53,301 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 42) no Hoare annotation was computed. [2021-10-28 23:01:53,301 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:01:53,301 INFO L857 garLoopResultBuilder]: For program point L33-1(lines 33 42) no Hoare annotation was computed. [2021-10-28 23:01:53,301 INFO L857 garLoopResultBuilder]: For program point L25-1(lines 25 29) no Hoare annotation was computed. [2021-10-28 23:01:53,301 INFO L853 garLoopResultBuilder]: At program point L25-2(lines 25 29) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse0 (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (not .cse0) .cse1 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) .cse2 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse0 (not .cse2)))) [2021-10-28 23:01:53,301 INFO L857 garLoopResultBuilder]: For program point L25-3(lines 22 43) no Hoare annotation was computed. [2021-10-28 23:01:53,302 INFO L857 garLoopResultBuilder]: For program point L25-5(lines 25 29) no Hoare annotation was computed. [2021-10-28 23:01:53,302 INFO L853 garLoopResultBuilder]: At program point L25-6(lines 25 29) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y) .cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-10-28 23:01:53,302 INFO L857 garLoopResultBuilder]: For program point L25-7(lines 22 43) no Hoare annotation was computed. [2021-10-28 23:01:53,302 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 52) no Hoare annotation was computed. [2021-10-28 23:01:53,302 INFO L857 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2021-10-28 23:01:53,303 INFO L853 garLoopResultBuilder]: At program point L42(lines 22 43) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse1 (not .cse2)) (and (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (not .cse1) .cse0 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) .cse2 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= ULTIMATE.start_fmax_float_~x (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))))) [2021-10-28 23:01:53,303 INFO L853 garLoopResultBuilder]: At program point L42-1(lines 22 43) the Hoare annotation is: (let ((.cse2 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (let ((.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_fmax_float_~y .cse2)) (.cse4 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse0 (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))) (or (and .cse0 (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse1 (not (fp.eq .cse2 .cse2)) .cse3 .cse4 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and .cse1 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse3 (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) .cse4 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (not .cse0))))) [2021-10-28 23:01:53,303 INFO L857 garLoopResultBuilder]: For program point L75-2(lines 75 78) no Hoare annotation was computed. [2021-10-28 23:01:53,303 INFO L857 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2021-10-28 23:01:53,307 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:01:53,309 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:01:53,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:01:53 BoogieIcfgContainer [2021-10-28 23:01:53,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:01:53,356 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:01:53,357 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:01:53,357 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:01:53,358 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:12" (3/4) ... [2021-10-28 23:01:53,361 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:01:53,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-28 23:01:53,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 23:01:53,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 23:01:53,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:01:53,421 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) [2021-10-28 23:01:53,422 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-isnan_float(x) && !isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) [2021-10-28 23:01:53,422 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(y, y) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || (((0bv32 == \result && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) [2021-10-28 23:01:53,423 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((aux-!isnan_float(x) && isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x) [2021-10-28 23:01:53,423 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((x == x && !~fp.eq~FLOAT(y, y)) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || ((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2021-10-28 23:01:53,424 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((((x == x && !~fp.eq~FLOAT(y, y)) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !(0bv32 == \result)) && x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2021-10-28 23:01:53,424 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && y == \result) && !~fp.eq~FLOAT(x, x)) || (((((y == y && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y))) || ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) [2021-10-28 23:01:53,424 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && y == x) && !~fp.eq~FLOAT(x, x)) || ((((~fp.eq~FLOAT(x, x) && y == y) && !~fp.eq~FLOAT(x, x)) && y == x) && 1bv32 == \result) [2021-10-28 23:01:53,425 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.eq~FLOAT(res, y) && y == y) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) || (((((~fp.eq~FLOAT(y, y) && y == y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result)) || (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && ~fp.eq~FLOAT(\result, x)) [2021-10-28 23:01:53,425 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((0bv32 == \result && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && 1bv32 == \result) || ((((((y == y && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(y, y)) && y == x) && !~fp.eq~FLOAT(x, x)) && !(0bv32 == \result)) [2021-10-28 23:01:53,426 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((aux-isnan_float(x) && !isnan_float(y)-aux && ~fp.eq~FLOAT(res, y)) && 0bv32 == \result) && y == y) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) || ((((((aux-isnan_float(x) && !isnan_float(y)-aux && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) [2021-10-28 23:01:53,426 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) || (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && ~fp.eq~FLOAT(\result, x)) [2021-10-28 23:01:53,427 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x) [2021-10-28 23:01:53,453 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:01:53,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:01:53,455 INFO L168 Benchmark]: Toolchain (without parser) took 41925.95 ms. Allocated memory was 60.8 MB in the beginning and 104.9 MB in the end (delta: 44.0 MB). Free memory was 41.0 MB in the beginning and 64.4 MB in the end (delta: -23.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:53,456 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 45.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:01:53,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.39 ms. Allocated memory is still 60.8 MB. Free memory was 40.8 MB in the beginning and 29.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:53,457 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.82 ms. Allocated memory is still 60.8 MB. Free memory was 29.8 MB in the beginning and 27.9 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:01:53,457 INFO L168 Benchmark]: Boogie Preprocessor took 45.18 ms. Allocated memory is still 60.8 MB. Free memory was 27.8 MB in the beginning and 26.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:53,458 INFO L168 Benchmark]: RCFGBuilder took 606.36 ms. Allocated memory is still 60.8 MB. Free memory was 26.1 MB in the beginning and 31.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:53,458 INFO L168 Benchmark]: TraceAbstraction took 40784.22 ms. Allocated memory was 60.8 MB in the beginning and 104.9 MB in the end (delta: 44.0 MB). Free memory was 31.6 MB in the beginning and 69.7 MB in the end (delta: -38.0 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:53,459 INFO L168 Benchmark]: Witness Printer took 97.06 ms. Allocated memory is still 104.9 MB. Free memory was 69.7 MB in the beginning and 64.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:01:53,461 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 60.8 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 45.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.39 ms. Allocated memory is still 60.8 MB. Free memory was 40.8 MB in the beginning and 29.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.82 ms. Allocated memory is still 60.8 MB. Free memory was 29.8 MB in the beginning and 27.9 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.18 ms. Allocated memory is still 60.8 MB. Free memory was 27.8 MB in the beginning and 26.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 606.36 ms. Allocated memory is still 60.8 MB. Free memory was 26.1 MB in the beginning and 31.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 40784.22 ms. Allocated memory was 60.8 MB in the beginning and 104.9 MB in the end (delta: 44.0 MB). Free memory was 31.6 MB in the beginning and 69.7 MB in the end (delta: -38.0 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. * Witness Printer took 97.06 ms. Allocated memory is still 104.9 MB. Free memory was 69.7 MB in the beginning and 64.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 40.6s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1146 SDtfs, 2600 SDslu, 4552 SDs, 0 SdLazy, 2015 SolverSat, 263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 774 SyntacticMatches, 6 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 578 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 48 NumberOfFragments, 616 HoareAnnotationTreeSize, 14 FomulaSimplifications, 584044 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 78839 FormulaSimplificationTreeSizeReductionInter, 5.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 31 QuantifiedInterpolants, 3559 SizeOfPredicates, 145 NumberOfNonLiveVariables, 1646 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((((0bv32 == \result && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && 1bv32 == \result) || ((((((y == y && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(y, y)) && y == x) && !~fp.eq~FLOAT(x, x)) && !(0bv32 == \result)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((((~fp.eq~FLOAT(res, y) && y == y) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) || (((((~fp.eq~FLOAT(y, y) && y == y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result)) || (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && ~fp.eq~FLOAT(\result, x)) - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && y == \result) && !~fp.eq~FLOAT(x, x)) || (((((y == y && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y))) || ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((aux-!isnan_float(x) && isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(y, y) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || (((0bv32 == \result && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((((x == x && !~fp.eq~FLOAT(y, y)) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !(0bv32 == \result)) && x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((x == x && !~fp.eq~FLOAT(y, y)) && y == y) && x == x) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) || ((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && y == x) && !~fp.eq~FLOAT(x, x)) || ((((~fp.eq~FLOAT(x, x) && y == y) && !~fp.eq~FLOAT(x, x)) && y == x) && 1bv32 == \result) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((((aux-isnan_float(x) && !isnan_float(y)-aux && ~fp.eq~FLOAT(res, y)) && 0bv32 == \result) && y == y) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) || ((((((aux-isnan_float(x) && !isnan_float(y)-aux && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) || (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && ~fp.eq~FLOAT(\result, x)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (aux-isnan_float(x) && !isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x) RESULT: Ultimate proved your program to be correct! [2021-10-28 23:01:53,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe598403-0744-4afa-9458-2819d2112e2a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...