./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8 --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 bec73cbd355af8995620266d1bb50e13212a1740ed8bd583620b6985b8fd569c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 22:24:56,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:24:56,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:24:56,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:24:56,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:24:56,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:24:56,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:24:56,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:24:56,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:24:56,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:24:56,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:24:56,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:24:56,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:24:56,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:24:56,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:24:56,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:24:56,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:24:56,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:24:56,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:24:56,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:24:56,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:24:56,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:24:56,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:24:56,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:24:56,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:24:56,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:24:56,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:24:56,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:24:56,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:24:56,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:24:56,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:24:56,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:24:56,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:24:56,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:24:56,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:24:56,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:24:56,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:24:56,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:24:56,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:24:56,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:24:56,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:24:56,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:24:56,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:24:56,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:24:56,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:24:56,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:24:56,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:24:56,306 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:24:56,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:24:56,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:24:56,306 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:24:56,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:24:56,307 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:24:56,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:24:56,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:24:56,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:24:56,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:24:56,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:24:56,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:24:56,307 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:24:56,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:24:56,308 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:24:56,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:24:56,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:24:56,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:24:56,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:24:56,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:24:56,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:24:56,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:24:56,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:24:56,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:24:56,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:24:56,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:24:56,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:24:56,309 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:24:56,309 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:24:56,309 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:24:56,310 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bec73cbd355af8995620266d1bb50e13212a1740ed8bd583620b6985b8fd569c [2022-12-13 22:24:56,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:24:56,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:24:56,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:24:56,539 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:24:56,540 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:24:56,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c [2022-12-13 22:24:59,103 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:24:59,252 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:24:59,252 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c [2022-12-13 22:24:59,258 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/data/35bc24971/fc20b70d1a6c43c9aaf6dd9c891a1998/FLAG8c05b8b23 [2022-12-13 22:24:59,271 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/data/35bc24971/fc20b70d1a6c43c9aaf6dd9c891a1998 [2022-12-13 22:24:59,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:24:59,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:24:59,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:24:59,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:24:59,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:24:59,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3829f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59, skipping insertion in model container [2022-12-13 22:24:59,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:24:59,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:24:59,432 WARN L237 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_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400] [2022-12-13 22:24:59,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:24:59,454 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:24:59,462 WARN L237 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_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400] [2022-12-13 22:24:59,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:24:59,480 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:24:59,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59 WrapperNode [2022-12-13 22:24:59,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:24:59,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:24:59,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:24:59,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:24:59,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,507 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-12-13 22:24:59,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:24:59,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:24:59,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:24:59,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:24:59,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,526 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:24:59,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:24:59,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:24:59,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:24:59,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59" (1/1) ... [2022-12-13 22:24:59,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:24:59,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:24:59,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:24:59,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:24:59,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:24:59,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:24:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:24:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:24:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:24:59,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:24:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:24:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:24:59,641 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:24:59,643 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:24:59,748 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:24:59,754 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:24:59,754 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 22:24:59,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:24:59 BoogieIcfgContainer [2022-12-13 22:24:59,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:24:59,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:24:59,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:24:59,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:24:59,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:24:59" (1/3) ... [2022-12-13 22:24:59,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2627859b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:24:59, skipping insertion in model container [2022-12-13 22:24:59,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:24:59" (2/3) ... [2022-12-13 22:24:59,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2627859b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:24:59, skipping insertion in model container [2022-12-13 22:24:59,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:24:59" (3/3) ... [2022-12-13 22:24:59,766 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_sendmail_tTflag_arr_one_loop.c [2022-12-13 22:24:59,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:24:59,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:24:59,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:24:59,840 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@153279c6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:24:59,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 22:24:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 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) [2022-12-13 22:24:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 22:24:59,849 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:24:59,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:24:59,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:24:59,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:24:59,855 INFO L85 PathProgramCache]: Analyzing trace with hash 212076531, now seen corresponding path program 1 times [2022-12-13 22:24:59,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:24:59,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66263929] [2022-12-13 22:24:59,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:24:59,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:24:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:00,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:00,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66263929] [2022-12-13 22:25:00,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66263929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:00,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:00,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:25:00,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884700529] [2022-12-13 22:25:00,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:00,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:25:00,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:00,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:25:00,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:25:00,055 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:00,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:00,091 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2022-12-13 22:25:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:25:00,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 22:25:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:00,100 INFO L225 Difference]: With dead ends: 35 [2022-12-13 22:25:00,100 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 22:25:00,103 INFO L412 NwaCegarLoop]: 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 [2022-12-13 22:25:00,107 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:00,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:25:00,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 22:25:00,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 11. [2022-12-13 22:25:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-12-13 22:25:00,133 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2022-12-13 22:25:00,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:00,134 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-12-13 22:25:00,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:00,134 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-12-13 22:25:00,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 22:25:00,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:00,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:00,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:25:00,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:25:00,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:00,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1435974389, now seen corresponding path program 1 times [2022-12-13 22:25:00,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:00,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397098061] [2022-12-13 22:25:00,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:00,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:00,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:00,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397098061] [2022-12-13 22:25:00,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397098061] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:25:00,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492602558] [2022-12-13 22:25:00,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:00,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:00,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:00,226 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:00,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:25:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:00,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:25:00,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:00,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:25:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:00,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492602558] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:25:00,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:25:00,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 22:25:00,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110266680] [2022-12-13 22:25:00,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:25:00,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:25:00,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:00,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:25:00,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:25:00,353 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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) [2022-12-13 22:25:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:00,389 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-12-13 22:25:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:25:00,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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 10 [2022-12-13 22:25:00,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:00,390 INFO L225 Difference]: With dead ends: 33 [2022-12-13 22:25:00,390 INFO L226 Difference]: Without dead ends: 27 [2022-12-13 22:25:00,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:25:00,392 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:00,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:25:00,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-13 22:25:00,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2022-12-13 22:25:00,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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) [2022-12-13 22:25:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-12-13 22:25:00,396 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2022-12-13 22:25:00,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:00,396 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-12-13 22:25:00,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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) [2022-12-13 22:25:00,397 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-12-13 22:25:00,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 22:25:00,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:00,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:00,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:25:00,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:00,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:25:00,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:00,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1662320891, now seen corresponding path program 2 times [2022-12-13 22:25:00,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:00,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185760929] [2022-12-13 22:25:00,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:00,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 22:25:00,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:00,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185760929] [2022-12-13 22:25:00,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185760929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:00,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:00,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:25:00,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654817347] [2022-12-13 22:25:00,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:00,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:25:00,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:00,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:25:00,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:25:00,727 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:00,749 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-12-13 22:25:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:25:00,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 22:25:00,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:00,751 INFO L225 Difference]: With dead ends: 22 [2022-12-13 22:25:00,751 INFO L226 Difference]: Without dead ends: 18 [2022-12-13 22:25:00,751 INFO L412 NwaCegarLoop]: 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 [2022-12-13 22:25:00,752 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:00,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:25:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-13 22:25:00,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-13 22:25:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 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) [2022-12-13 22:25:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-12-13 22:25:00,757 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2022-12-13 22:25:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:00,757 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-12-13 22:25:00,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:00,757 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-12-13 22:25:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 22:25:00,758 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:00,758 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:00,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 22:25:00,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:25:00,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:00,759 INFO L85 PathProgramCache]: Analyzing trace with hash -5994546, now seen corresponding path program 1 times [2022-12-13 22:25:00,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:00,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160902288] [2022-12-13 22:25:00,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:00,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:25:00,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:00,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160902288] [2022-12-13 22:25:00,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160902288] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:25:00,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310045068] [2022-12-13 22:25:00,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:00,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:00,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:00,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:00,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:25:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:00,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 22:25:00,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:25:00,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:25:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:25:01,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310045068] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:25:01,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:25:01,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 22:25:01,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590973913] [2022-12-13 22:25:01,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:25:01,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 22:25:01,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:01,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 22:25:01,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:25:01,027 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 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) [2022-12-13 22:25:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:01,078 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2022-12-13 22:25:01,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:25:01,079 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 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 17 [2022-12-13 22:25:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:01,079 INFO L225 Difference]: With dead ends: 42 [2022-12-13 22:25:01,079 INFO L226 Difference]: Without dead ends: 35 [2022-12-13 22:25:01,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:25:01,081 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:01,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:25:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-13 22:25:01,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2022-12-13 22:25:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 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) [2022-12-13 22:25:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-12-13 22:25:01,086 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2022-12-13 22:25:01,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:01,086 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-12-13 22:25:01,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 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) [2022-12-13 22:25:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-12-13 22:25:01,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 22:25:01,087 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:01,087 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:01,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 22:25:01,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:01,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:25:01,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:01,291 INFO L85 PathProgramCache]: Analyzing trace with hash 776585922, now seen corresponding path program 2 times [2022-12-13 22:25:01,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:01,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694004197] [2022-12-13 22:25:01,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:01,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:25:01,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:01,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694004197] [2022-12-13 22:25:01,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694004197] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:25:01,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92151413] [2022-12-13 22:25:01,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:25:01,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:01,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:01,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:01,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:25:01,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:25:01,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:25:01,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 22:25:01,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:25:01,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:25:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:25:01,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92151413] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:25:01,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:25:01,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2022-12-13 22:25:01,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950841326] [2022-12-13 22:25:01,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:25:01,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 22:25:01,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:01,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 22:25:01,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2022-12-13 22:25:01,763 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:01,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:01,805 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2022-12-13 22:25:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 22:25:01,805 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-12-13 22:25:01,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:01,806 INFO L225 Difference]: With dead ends: 44 [2022-12-13 22:25:01,806 INFO L226 Difference]: Without dead ends: 37 [2022-12-13 22:25:01,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2022-12-13 22:25:01,807 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:01,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:25:01,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-13 22:25:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2022-12-13 22:25:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-12-13 22:25:01,813 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2022-12-13 22:25:01,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:01,813 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-12-13 22:25:01,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-12-13 22:25:01,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 22:25:01,814 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:01,814 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:01,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 22:25:02,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:02,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:25:02,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:02,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1133517568, now seen corresponding path program 3 times [2022-12-13 22:25:02,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:02,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075196659] [2022-12-13 22:25:02,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:02,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 22:25:02,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:02,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075196659] [2022-12-13 22:25:02,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075196659] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:25:02,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282758641] [2022-12-13 22:25:02,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 22:25:02,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:02,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:02,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:02,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:25:02,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 22:25:02,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:25:02,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 22:25:02,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 22:25:02,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:25:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 22:25:13,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282758641] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:25:13,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:25:13,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-12-13 22:25:13,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244934373] [2022-12-13 22:25:13,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:25:13,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:25:13,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:13,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:25:13,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:25:13,400 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:13,725 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-12-13 22:25:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:25:13,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-12-13 22:25:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:13,727 INFO L225 Difference]: With dead ends: 40 [2022-12-13 22:25:13,727 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 22:25:13,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:25:13,728 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:13,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 28 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 22:25:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 22:25:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-12-13 22:25:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 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) [2022-12-13 22:25:13,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-12-13 22:25:13,732 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 31 [2022-12-13 22:25:13,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:13,732 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-12-13 22:25:13,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:13,733 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-12-13 22:25:13,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 22:25:13,733 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:13,733 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:13,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 22:25:13,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:13,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:25:13,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:13,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1664602656, now seen corresponding path program 4 times [2022-12-13 22:25:13,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:13,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444056874] [2022-12-13 22:25:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:13,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 22:25:14,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:14,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444056874] [2022-12-13 22:25:14,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444056874] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:25:14,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999462588] [2022-12-13 22:25:14,307 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 22:25:14,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:14,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:14,308 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:14,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 22:25:14,591 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 22:25:14,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:25:14,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 22:25:14,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 22:25:15,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:27:11,406 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (* 256 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365_359| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365| Int) (|aux_div_aux_mod_ULTIMATE.start_main_~c~0#1_38_49| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138| Int) (|aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60| Int) (|aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365_359| Int) (|aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71| Int)) (let ((.cse11 (* |c_ULTIMATE.start_main_~i~0#1| 4294967562)) (.cse8 (* |aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71| 4294967296)) (.cse2 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138| 4294967040)) (.cse19 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221| 4294967296)) (.cse20 (* |aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60| 256)) (.cse21 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365_359| 4294967296)) (.cse22 (* 4294967296 |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365|))) (let ((.cse12 (+ .cse19 .cse20 .cse21 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365_359| (* 256 |aux_div_aux_mod_ULTIMATE.start_main_~c~0#1_38_49|) .cse22)) (.cse13 (+ 8589934544 .cse11 .cse8 .cse2)) (.cse7 (* 4294967306 |c_ULTIMATE.start_main_~i~0#1|)) (.cse9 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138| 4294967296)) (.cse10 (* 4294967552 |c_ULTIMATE.start_main_~i~0#1|)) (.cse6 (+ .cse21 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365_359| .cse22)) (.cse3 (+ .cse21 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365_359|)) (.cse1 (* |aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71| 256)) (.cse15 (* |aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71| 4294967552)) (.cse5 (+ .cse19 .cse21 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365_359| .cse22)) (.cse4 (+ 8589934800 .cse11 .cse8 .cse2)) (.cse14 (+ .cse19 .cse20 .cse21 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365_359| .cse22)) (.cse16 (* |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365_359| (- 5))) (.cse17 (* |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365_359| 5))) (or (< (+ .cse0 2147483647 .cse1 .cse2) .cse3) (<= .cse4 .cse5) (< .cse6 (+ .cse7 .cse8 .cse9 4294967248)) (< .cse6 (+ .cse8 .cse2 .cse10 4294967296)) (< (+ .cse11 .cse8 .cse2 8589934601) .cse12) (< .cse12 .cse13) (< .cse14 (+ .cse11 8589934592 .cse8 .cse2)) (< .cse5 .cse13) (<= (+ .cse7 4294967504 .cse8 .cse9) .cse6) (< .cse5 (+ 8589934544 .cse11 .cse2 .cse15)) (>= |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365_359| 4294967296) (< (let ((.cse18 (div (+ 1073741828 .cse17) 128))) (+ 23 (* (div (+ (- 1) .cse16) 128) 128) (* (div (+ (div (+ .cse17 1073741927) 128) .cse18) 33554432) 2147483648) (* 128 .cse18))) .cse17) (<= (+ 8589934592 .cse8 .cse2 .cse10) .cse6) (< .cse3 (+ .cse0 .cse1 .cse2)) (<= (+ 8589934800 .cse11 .cse2 .cse15) .cse5) (> 0 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138_365_359|) (<= .cse4 .cse14) (< (+ (* 2560 |c_ULTIMATE.start_main_~i~0#1|) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138| 42949670400) (* (div (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_71_221_138| (- 21474835200)) (* |c_ULTIMATE.start_main_~i~0#1| (- 1280)) .cse17 (- 20401094652)) 2147483648) 4294967296) 21474836503 (* (div (+ 21474836479 .cse16) 128) 128)) .cse17))))) (forall ((|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269| Int) (|aux_div_aux_mod_ULTIMATE.start_main_~c~0#1_38_49| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95| Int) (|aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127| Int) (|aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129| Int) (|aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241| Int)) (let ((.cse33 (* 5 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241|)) (.cse42 (* |aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60| 256)) (.cse27 (* 4294967040 |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95|)) (.cse28 (* 266 |c_ULTIMATE.start_main_~i~0#1|)) (.cse41 (* 256 |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127|)) (.cse43 (* |aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129| 4294967296)) (.cse39 (* 4294967296 |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241|)) (.cse40 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269| 4294967296))) (let ((.cse23 (+ .cse41 .cse43 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241| .cse39 .cse40)) (.cse24 (+ 8589934544 .cse27 .cse28)) (.cse29 (+ .cse42 .cse41 .cse43 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241| .cse39 .cse40 (* 256 |aux_div_aux_mod_ULTIMATE.start_main_~c~0#1_38_49|))) (.cse25 (+ 8589934800 .cse27 .cse28)) (.cse26 (+ .cse42 .cse41 .cse43 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241| .cse39 .cse40)) (.cse34 (+ |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241| .cse39)) (.cse30 (+ .cse41 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241| .cse39 .cse40)) (.cse36 (* |c_ULTIMATE.start_main_~i~0#1| 10)) (.cse37 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95| 4294967296)) (.cse35 (+ |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241| .cse39 .cse40)) (.cse32 (* 128 (div (+ 21474836479 (* (- 5) |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241|)) 128))) (.cse31 (+ .cse33 (- 20401094652)))) (or (< .cse23 .cse24) (<= .cse25 .cse23) (< .cse26 (+ 8589934592 .cse27 .cse28)) (< .cse29 .cse24) (< (+ .cse27 8589934601 .cse28) .cse29) (<= (+ .cse0 8589934592 .cse27) .cse30) (< (+ 21474836503 (* (div .cse31 2147483648) 4294967296) .cse32) .cse33) (<= .cse25 .cse26) (<= (+ .cse27 4294967296) .cse34) (> 0 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241|) (< .cse34 .cse27) (<= .cse30 (+ .cse0 .cse27 6442450943)) (>= |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95_269_241| 4294967296) (< .cse35 (+ .cse36 .cse27 4294967248)) (<= (+ .cse36 .cse27 4294967504) .cse35) (< .cse35 (+ .cse36 4294967248 .cse37)) (<= (+ .cse36 4294967504 .cse37) .cse35) (< (let ((.cse38 (div .cse31 128))) (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95| 21474835200) 21474836503 (* .cse38 128) (* 2147483648 (div (+ (div (+ .cse33 (- 20401094553)) 128) .cse38 (* (- 335544300) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127_95|)) 33554432)) .cse32)) .cse33))))))) is different from true [2022-12-13 22:30:29,841 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-12-13 22:30:29,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 22:30:30,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 22:30:30,044 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Possible infinite loop detected |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127| already exists at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:199) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:594) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:582) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:582) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:509) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:423) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.findBestReplacementSbr(DualJunctionDer.java:312) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.tryToEliminateSbr(DualJunctionDer.java:328) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:235) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:202) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:186) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminate(DualJunctionDer.java:131) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-13 22:30:30,052 INFO L158 Benchmark]: Toolchain (without parser) took 330776.72ms. Allocated memory was 117.4MB in the beginning and 180.4MB in the end (delta: 62.9MB). Free memory was 60.2MB in the beginning and 127.0MB in the end (delta: -66.8MB). Peak memory consumption was 76.9MB. Max. memory is 16.1GB. [2022-12-13 22:30:30,053 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:30:30,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.99ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 60.0MB in the beginning and 120.1MB in the end (delta: -60.1MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2022-12-13 22:30:30,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.22ms. Allocated memory is still 148.9MB. Free memory was 120.1MB in the beginning and 118.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:30:30,056 INFO L158 Benchmark]: Boogie Preprocessor took 21.42ms. Allocated memory is still 148.9MB. Free memory was 118.0MB in the beginning and 117.1MB in the end (delta: 917.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:30:30,058 INFO L158 Benchmark]: RCFGBuilder took 226.57ms. Allocated memory is still 148.9MB. Free memory was 117.1MB in the beginning and 106.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 22:30:30,059 INFO L158 Benchmark]: TraceAbstraction took 330291.08ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 106.0MB in the beginning and 127.0MB in the end (delta: -21.0MB). Peak memory consumption was 88.6MB. Max. memory is 16.1GB. [2022-12-13 22:30:30,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.99ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 60.0MB in the beginning and 120.1MB in the end (delta: -60.1MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.22ms. Allocated memory is still 148.9MB. Free memory was 120.1MB in the beginning and 118.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.42ms. Allocated memory is still 148.9MB. Free memory was 118.0MB in the beginning and 117.1MB in the end (delta: 917.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 226.57ms. Allocated memory is still 148.9MB. Free memory was 117.1MB in the beginning and 106.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 330291.08ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 106.0MB in the beginning and 127.0MB in the end (delta: -21.0MB). Peak memory consumption was 88.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Possible infinite loop detected |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127| already exists de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Possible infinite loop detected |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~c~0#1_38_49_60_129_127| already exists: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:199) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-13 22:30:30,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8 --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 bec73cbd355af8995620266d1bb50e13212a1740ed8bd583620b6985b8fd569c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 22:30:31,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:30:31,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:30:31,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:30:31,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:30:31,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:30:31,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:30:31,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:30:31,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:30:31,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:30:31,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:30:31,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:30:31,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:30:31,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:30:31,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:30:31,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:30:31,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:30:31,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:30:31,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:30:31,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:30:31,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:30:31,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:30:31,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:30:31,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:30:31,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:30:31,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:30:31,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:30:31,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:30:31,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:30:31,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:30:31,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:30:31,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:30:31,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:30:31,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:30:31,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:30:31,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:30:31,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:30:31,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:30:31,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:30:31,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:30:31,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:30:31,594 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 22:30:31,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:30:31,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:30:31,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:30:31,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:30:31,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:30:31,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:30:31,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:30:31,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:30:31,620 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:30:31,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:30:31,621 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:30:31,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:30:31,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:30:31,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:30:31,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:30:31,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:30:31,622 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 22:30:31,622 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 22:30:31,622 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 22:30:31,622 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:30:31,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:30:31,622 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:30:31,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:30:31,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:30:31,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:30:31,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:30:31,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:30:31,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:30:31,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:30:31,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:30:31,624 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 22:30:31,624 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 22:30:31,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:30:31,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:30:31,624 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:30:31,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:30:31,625 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 22:30:31,625 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:30:31,625 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bec73cbd355af8995620266d1bb50e13212a1740ed8bd583620b6985b8fd569c [2022-12-13 22:30:31,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:30:31,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:30:31,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:30:31,882 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:30:31,883 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:30:31,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c [2022-12-13 22:30:34,496 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:30:34,645 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:30:34,645 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c [2022-12-13 22:30:34,651 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/data/6212238e5/3bcf01811f994300a2f1c4c893d5c0f0/FLAG1ac651ff1 [2022-12-13 22:30:34,662 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/data/6212238e5/3bcf01811f994300a2f1c4c893d5c0f0 [2022-12-13 22:30:34,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:30:34,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:30:34,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:30:34,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:30:34,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:30:34,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113d145c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34, skipping insertion in model container [2022-12-13 22:30:34,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:30:34,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:30:34,789 WARN L237 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_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400] [2022-12-13 22:30:34,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:30:34,811 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:30:34,820 WARN L237 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_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400] [2022-12-13 22:30:34,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:30:34,835 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:30:34,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34 WrapperNode [2022-12-13 22:30:34,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:30:34,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:30:34,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:30:34,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:30:34,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,860 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2022-12-13 22:30:34,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:30:34,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:30:34,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:30:34,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:30:34,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,878 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:30:34,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:30:34,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:30:34,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:30:34,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34" (1/1) ... [2022-12-13 22:30:34,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:30:34,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:30:34,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:30:34,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:30:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:30:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-13 22:30:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 22:30:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:30:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:30:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:30:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-12-13 22:30:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:30:35,001 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:30:35,003 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:30:35,115 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:30:35,119 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:30:35,119 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 22:30:35,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:30:35 BoogieIcfgContainer [2022-12-13 22:30:35,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:30:35,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:30:35,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:30:35,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:30:35,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:30:34" (1/3) ... [2022-12-13 22:30:35,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256b828f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:30:35, skipping insertion in model container [2022-12-13 22:30:35,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:30:34" (2/3) ... [2022-12-13 22:30:35,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256b828f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:30:35, skipping insertion in model container [2022-12-13 22:30:35,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:30:35" (3/3) ... [2022-12-13 22:30:35,126 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_sendmail_tTflag_arr_one_loop.c [2022-12-13 22:30:35,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:30:35,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:30:35,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:30:35,181 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@34163d51, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:30:35,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 22:30:35,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 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) [2022-12-13 22:30:35,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 22:30:35,191 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:30:35,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:30:35,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:30:35,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:35,197 INFO L85 PathProgramCache]: Analyzing trace with hash 212076531, now seen corresponding path program 1 times [2022-12-13 22:30:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:30:35,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83054972] [2022-12-13 22:30:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:35,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:35,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:30:35,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:30:35,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 22:30:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:35,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 22:30:35,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:35,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:30:35,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:30:35,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83054972] [2022-12-13 22:30:35,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83054972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:30:35,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:30:35,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:30:35,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580654218] [2022-12-13 22:30:35,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:30:35,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:30:35,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:30:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:30:35,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:30:35,369 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:35,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:30:35,405 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2022-12-13 22:30:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:30:35,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 22:30:35,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:30:35,412 INFO L225 Difference]: With dead ends: 35 [2022-12-13 22:30:35,413 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 22:30:35,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:30:35,417 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:30:35,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:30:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 22:30:35,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 11. [2022-12-13 22:30:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:35,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-12-13 22:30:35,444 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2022-12-13 22:30:35,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:30:35,445 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-12-13 22:30:35,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-12-13 22:30:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 22:30:35,445 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:30:35,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:30:35,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:30:35,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:35,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:30:35,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:35,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1435974389, now seen corresponding path program 1 times [2022-12-13 22:30:35,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:30:35,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510912547] [2022-12-13 22:30:35,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:35,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:35,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:30:35,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:30:35,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 22:30:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:35,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:30:35,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:35,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:30:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:30:35,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:30:35,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510912547] [2022-12-13 22:30:35,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510912547] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:30:35,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:30:35,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 22:30:35,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43768842] [2022-12-13 22:30:35,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:30:35,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:30:35,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:30:35,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:30:35,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:30:35,833 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:35,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:30:35,913 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-12-13 22:30:35,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:30:35,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-13 22:30:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:30:35,914 INFO L225 Difference]: With dead ends: 33 [2022-12-13 22:30:35,915 INFO L226 Difference]: Without dead ends: 27 [2022-12-13 22:30:35,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:30:35,916 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:30:35,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 22 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:30:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-13 22:30:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2022-12-13 22:30:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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) [2022-12-13 22:30:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-12-13 22:30:35,921 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2022-12-13 22:30:35,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:30:35,922 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-12-13 22:30:35,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:35,922 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-12-13 22:30:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 22:30:35,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:30:35,923 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:30:35,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 22:30:36,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:36,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:30:36,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:36,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1662320891, now seen corresponding path program 2 times [2022-12-13 22:30:36,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:30:36,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151094873] [2022-12-13 22:30:36,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:30:36,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:36,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:30:36,133 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:30:36,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 22:30:36,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 22:30:36,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:30:36,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:30:36,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 22:30:36,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:30:36,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:30:36,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151094873] [2022-12-13 22:30:36,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151094873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:30:36,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:30:36,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:30:36,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765445660] [2022-12-13 22:30:36,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:30:36,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:30:36,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:30:36,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:30:36,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:30:36,315 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:36,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:30:36,346 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-12-13 22:30:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:30:36,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 22:30:36,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:30:36,347 INFO L225 Difference]: With dead ends: 22 [2022-12-13 22:30:36,347 INFO L226 Difference]: Without dead ends: 18 [2022-12-13 22:30:36,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:30:36,349 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:30:36,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:30:36,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-13 22:30:36,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-13 22:30:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 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) [2022-12-13 22:30:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-12-13 22:30:36,353 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2022-12-13 22:30:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:30:36,354 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-12-13 22:30:36,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:36,354 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-12-13 22:30:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 22:30:36,354 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:30:36,354 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:30:36,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 22:30:36,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:36,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:30:36,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash -5994546, now seen corresponding path program 1 times [2022-12-13 22:30:36,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:30:36,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705746855] [2022-12-13 22:30:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:36,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:36,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:30:36,567 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:30:36,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 22:30:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:36,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 22:30:36,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:30:36,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:30:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:30:36,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:30:36,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705746855] [2022-12-13 22:30:36,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705746855] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:30:36,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:30:36,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 22:30:36,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795618662] [2022-12-13 22:30:36,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:30:36,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 22:30:36,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:30:36,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 22:30:36,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:30:36,884 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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) [2022-12-13 22:30:37,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:30:37,126 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2022-12-13 22:30:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:30:37,127 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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 17 [2022-12-13 22:30:37,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:30:37,127 INFO L225 Difference]: With dead ends: 42 [2022-12-13 22:30:37,128 INFO L226 Difference]: Without dead ends: 35 [2022-12-13 22:30:37,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-12-13 22:30:37,129 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:30:37,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 31 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:30:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-13 22:30:37,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2022-12-13 22:30:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 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) [2022-12-13 22:30:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-12-13 22:30:37,135 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2022-12-13 22:30:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:30:37,135 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-12-13 22:30:37,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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) [2022-12-13 22:30:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-12-13 22:30:37,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 22:30:37,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:30:37,136 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:30:37,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 22:30:37,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:37,338 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:30:37,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash 776585922, now seen corresponding path program 2 times [2022-12-13 22:30:37,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:30:37,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526203155] [2022-12-13 22:30:37,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:30:37,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:37,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:30:37,345 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:30:37,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 22:30:37,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:30:37,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:30:37,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 22:30:37,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:30:37,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:30:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:30:37,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:30:37,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526203155] [2022-12-13 22:30:37,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526203155] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:30:37,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:30:37,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-12-13 22:30:37,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182561799] [2022-12-13 22:30:37,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:30:37,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 22:30:37,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:30:37,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 22:30:37,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2022-12-13 22:30:37,922 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:30:38,143 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2022-12-13 22:30:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 22:30:38,144 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 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 29 [2022-12-13 22:30:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:30:38,144 INFO L225 Difference]: With dead ends: 45 [2022-12-13 22:30:38,144 INFO L226 Difference]: Without dead ends: 38 [2022-12-13 22:30:38,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2022-12-13 22:30:38,146 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:30:38,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:30:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-13 22:30:38,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-12-13 22:30:38,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:38,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-12-13 22:30:38,152 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2022-12-13 22:30:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:30:38,152 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-12-13 22:30:38,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-12-13 22:30:38,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 22:30:38,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:30:38,153 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:30:38,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 22:30:38,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:38,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:30:38,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1133517568, now seen corresponding path program 3 times [2022-12-13 22:30:38,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:30:38,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187446429] [2022-12-13 22:30:38,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 22:30:38,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:38,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:30:38,363 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:30:38,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 22:30:38,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 22:30:38,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:30:38,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 22:30:38,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 22:30:38,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:30:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 22:30:38,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:30:38,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187446429] [2022-12-13 22:30:38,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187446429] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:30:38,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:30:38,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 22:30:38,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192015396] [2022-12-13 22:30:38,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:30:38,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:30:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:30:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:30:38,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:30:38,583 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2022-12-13 22:30:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:30:38,740 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-12-13 22:30:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:30:38,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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 31 [2022-12-13 22:30:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:30:38,741 INFO L225 Difference]: With dead ends: 43 [2022-12-13 22:30:38,741 INFO L226 Difference]: Without dead ends: 35 [2022-12-13 22:30:38,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:30:38,741 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:30:38,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:30:38,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-13 22:30:38,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-12-13 22:30:38,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-12-13 22:30:38,748 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2022-12-13 22:30:38,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:30:38,748 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-12-13 22:30:38,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2022-12-13 22:30:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-12-13 22:30:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 22:30:38,749 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:30:38,749 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:30:38,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 22:30:38,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:38,950 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:30:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash 64740169, now seen corresponding path program 4 times [2022-12-13 22:30:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:30:38,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4071026] [2022-12-13 22:30:38,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 22:30:38,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:38,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:30:38,953 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:30:38,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 22:30:39,037 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 22:30:39,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:30:39,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 22:30:39,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:30:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 22:30:39,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:30:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 22:30:41,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:30:41,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4071026] [2022-12-13 22:30:41,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4071026] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:30:41,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:30:41,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-12-13 22:30:41,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141123508] [2022-12-13 22:30:41,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:30:41,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 22:30:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:30:41,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 22:30:41,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-12-13 22:30:41,750 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:49,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:30:49,513 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2022-12-13 22:30:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 22:30:49,514 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 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 34 [2022-12-13 22:30:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:30:49,514 INFO L225 Difference]: With dead ends: 55 [2022-12-13 22:30:49,514 INFO L226 Difference]: Without dead ends: 41 [2022-12-13 22:30:49,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2022-12-13 22:30:49,515 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:30:49,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 44 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 22:30:49,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-13 22:30:49,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-12-13 22:30:49,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 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) [2022-12-13 22:30:49,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2022-12-13 22:30:49,523 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 34 [2022-12-13 22:30:49,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:30:49,523 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2022-12-13 22:30:49,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:30:49,523 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2022-12-13 22:30:49,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 22:30:49,524 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:30:49,524 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:30:49,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-12-13 22:30:49,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:49,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:30:49,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:49,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1907904535, now seen corresponding path program 5 times [2022-12-13 22:30:49,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:30:49,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728995028] [2022-12-13 22:30:49,729 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 22:30:49,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:49,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:30:49,732 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:30:49,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 22:30:49,986 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-12-13 22:30:49,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-12-13 22:30:49,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 22:30:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:30:50,177 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 22:30:50,177 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 22:30:50,178 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 22:30:50,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 22:30:50,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:30:50,388 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1] [2022-12-13 22:30:50,398 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:30:50,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:30:50 BoogieIcfgContainer [2022-12-13 22:30:50,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:30:50,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:30:50,451 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:30:50,451 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:30:50,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:30:35" (3/4) ... [2022-12-13 22:30:50,453 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 22:30:50,493 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 22:30:50,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:30:50,494 INFO L158 Benchmark]: Toolchain (without parser) took 15828.77ms. Allocated memory is still 88.1MB. Free memory was 66.8MB in the beginning and 40.9MB in the end (delta: 25.9MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2022-12-13 22:30:50,494 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 60.8MB. Free memory was 39.0MB in the beginning and 38.9MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:30:50,494 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.68ms. Allocated memory is still 88.1MB. Free memory was 66.6MB in the beginning and 56.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 22:30:50,495 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.52ms. Allocated memory is still 88.1MB. Free memory was 56.0MB in the beginning and 54.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:30:50,495 INFO L158 Benchmark]: Boogie Preprocessor took 19.28ms. Allocated memory is still 88.1MB. Free memory was 54.3MB in the beginning and 53.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:30:50,495 INFO L158 Benchmark]: RCFGBuilder took 239.51ms. Allocated memory is still 88.1MB. Free memory was 52.9MB in the beginning and 63.5MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 22:30:50,496 INFO L158 Benchmark]: TraceAbstraction took 15328.83ms. Allocated memory is still 88.1MB. Free memory was 62.8MB in the beginning and 45.1MB in the end (delta: 17.8MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2022-12-13 22:30:50,496 INFO L158 Benchmark]: Witness Printer took 42.42ms. Allocated memory is still 88.1MB. Free memory was 45.1MB in the beginning and 40.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 22:30:50,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 60.8MB. Free memory was 39.0MB in the beginning and 38.9MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.68ms. Allocated memory is still 88.1MB. Free memory was 66.6MB in the beginning and 56.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.52ms. Allocated memory is still 88.1MB. Free memory was 56.0MB in the beginning and 54.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.28ms. Allocated memory is still 88.1MB. Free memory was 54.3MB in the beginning and 53.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 239.51ms. Allocated memory is still 88.1MB. Free memory was 52.9MB in the beginning and 63.5MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 15328.83ms. Allocated memory is still 88.1MB. Free memory was 62.8MB in the beginning and 45.1MB in the end (delta: 17.8MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Witness Printer took 42.42ms. Allocated memory is still 88.1MB. Free memory was 45.1MB in the beginning and 40.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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 - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] char in[11]; [L17] char *s; [L18] unsigned char c; [L19] int i, j; [L20] int idx_in; [L21] i = 0 VAL [i=0, in={5:0}] [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ VAL [i=1, in={5:0}] [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ VAL [i=2, in={5:0}] [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ VAL [i=3, in={5:0}] [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ VAL [i=4, in={5:0}] [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ VAL [i=5, in={5:0}] [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ VAL [i=6, in={5:0}] [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ VAL [i=7, in={5:0}] [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ VAL [i=8, in={5:0}] [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ VAL [i=9, in={5:0}] [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ VAL [i=10, in={5:0}] [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ VAL [i=11, in={5:0}] [L21] COND FALSE !(i < 11) VAL [i=11, in={5:0}] [L23] in[10] = 0 [L24] idx_in = 0 [L25] s = in [L26] i = 0 [L27] EXPR in[idx_in] [L27] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND FALSE !(('0' <= c) && (c <= '9')) VAL [c=0, i=-390240792, idx_in=10, in={5:0}, j=0, s={5:0}] [L36] CALL __VERIFIER_assert (i >= 0) [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.2s, OverallIterations: 8, TraceHistogramMax: 11, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 101 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 101 mSDsluCounter, 231 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 180 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 580 IncrementalHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 51 mSDtfsCounter, 580 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=7, InterpolantAutomatonStates: 67, 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, 7 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 185 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 254 ConstructedInterpolants, 12 QuantifiedInterpolants, 883 SizeOfPredicates, 20 NumberOfNonLiveVariables, 436 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 504/760 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 22:30:50,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f66afc-12dd-40b8-819f-d40fc3b0b3f0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE