./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa --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 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:05:04,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:05:04,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:05:04,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:05:04,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:05:04,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:05:04,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:05:04,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:05:04,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:05:04,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:05:04,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:05:04,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:05:04,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:05:04,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:05:04,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:05:04,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:05:04,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:05:04,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:05:04,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:05:04,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:05:04,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:05:04,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:05:04,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:05:04,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:05:04,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:05:04,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:05:04,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:05:04,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:05:04,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:05:04,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:05:04,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:05:04,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:05:04,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:05:04,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:05:04,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:05:04,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:05:04,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:05:04,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:05:04,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:05:04,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:05:04,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:05:04,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:05:04,501 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:05:04,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:05:04,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:05:04,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:05:04,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:05:04,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:05:04,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:05:04,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:05:04,504 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:05:04,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:05:04,504 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:05:04,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:05:04,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:05:04,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:05:04,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:05:04,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:05:04,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:05:04,505 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:05:04,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:05:04,506 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:05:04,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:05:04,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:05:04,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:05:04,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:05:04,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:05:04,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:05:04,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:05:04,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:05:04,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:05:04,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:05:04,508 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:05:04,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:05:04,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:05:04,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:05:04,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 [2021-12-07 00:05:04,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:05:04,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:05:04,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:05:04,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:05:04,713 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:05:04,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2021-12-07 00:05:04,756 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/data/d4b51d33a/66b9a54573b24a9880e131ae8ffdb5bc/FLAG5d8d6126a [2021-12-07 00:05:05,129 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:05:05,130 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2021-12-07 00:05:05,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/data/d4b51d33a/66b9a54573b24a9880e131ae8ffdb5bc/FLAG5d8d6126a [2021-12-07 00:05:05,145 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/data/d4b51d33a/66b9a54573b24a9880e131ae8ffdb5bc [2021-12-07 00:05:05,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:05:05,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:05:05,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:05:05,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:05:05,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:05:05,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:05:05" (1/1) ... [2021-12-07 00:05:05,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c69b21a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05, skipping insertion in model container [2021-12-07 00:05:05,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:05:05" (1/1) ... [2021-12-07 00:05:05,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:05:05,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:05:05,335 WARN L230 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_f121bf15-5dc7-4de1-90c6-271c2d08a183/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2021-12-07 00:05:05,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:05:05,343 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:05:05,373 WARN L230 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_f121bf15-5dc7-4de1-90c6-271c2d08a183/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2021-12-07 00:05:05,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:05:05,384 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:05:05,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05 WrapperNode [2021-12-07 00:05:05,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:05:05,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:05:05,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:05:05,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:05:05,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05" (1/1) ... [2021-12-07 00:05:05,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05" (1/1) ... [2021-12-07 00:05:05,432 INFO L137 Inliner]: procedures = 19, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 242 [2021-12-07 00:05:05,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:05:05,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:05:05,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:05:05,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:05:05,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05" (1/1) ... [2021-12-07 00:05:05,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05" (1/1) ... [2021-12-07 00:05:05,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05" (1/1) ... [2021-12-07 00:05:05,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05" (1/1) ... [2021-12-07 00:05:05,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05" (1/1) ... [2021-12-07 00:05:05,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05" (1/1) ... [2021-12-07 00:05:05,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05" (1/1) ... [2021-12-07 00:05:05,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:05:05,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:05:05,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:05:05,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:05:05,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05" (1/1) ... [2021-12-07 00:05:05,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:05:05,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:05:05,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:05:05,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:05:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:05:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:05:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:05:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:05:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-07 00:05:05,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-07 00:05:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:05:05,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:05:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:05:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-12-07 00:05:05,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:05:05,578 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:05:05,579 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:05:05,817 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:05:05,824 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:05:05,824 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-07 00:05:05,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:05:05 BoogieIcfgContainer [2021-12-07 00:05:05,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:05:05,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:05:05,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:05:05,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:05:05,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:05:05" (1/3) ... [2021-12-07 00:05:05,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49aedc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:05:05, skipping insertion in model container [2021-12-07 00:05:05,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:05" (2/3) ... [2021-12-07 00:05:05,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49aedc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:05:05, skipping insertion in model container [2021-12-07 00:05:05,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:05:05" (3/3) ... [2021-12-07 00:05:05,834 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2021-12-07 00:05:05,840 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:05:05,840 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:05:05,875 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:05:05,880 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:05:05,881 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:05:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-07 00:05:05,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:05,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:05,898 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:05,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:05,902 INFO L85 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2021-12-07 00:05:05,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:05:05,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073060121] [2021-12-07 00:05:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:05,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:05:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:06,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:05:06,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073060121] [2021-12-07 00:05:06,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073060121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:06,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:06,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:05:06,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416818553] [2021-12-07 00:05:06,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:06,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:05:06,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:05:06,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:05:06,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:05:06,064 INFO L87 Difference]: Start difference. First operand has 61 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:06,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:06,086 INFO L93 Difference]: Finished difference Result 119 states and 208 transitions. [2021-12-07 00:05:06,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:05:06,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-07 00:05:06,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:06,097 INFO L225 Difference]: With dead ends: 119 [2021-12-07 00:05:06,097 INFO L226 Difference]: Without dead ends: 57 [2021-12-07 00:05:06,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:05:06,103 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:06,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:05:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-07 00:05:06,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-07 00:05:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.5) internal successors, (84), 56 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2021-12-07 00:05:06,137 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2021-12-07 00:05:06,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:06,137 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2021-12-07 00:05:06,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:06,137 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2021-12-07 00:05:06,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-07 00:05:06,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:06,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:06,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:05:06,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:06,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:06,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2021-12-07 00:05:06,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:05:06,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342089872] [2021-12-07 00:05:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:06,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:05:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:05:06,186 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:05:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:05:06,228 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:05:06,228 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 00:05:06,230 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 00:05:06,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:05:06,234 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-07 00:05:06,236 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 00:05:06,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:05:06 BoogieIcfgContainer [2021-12-07 00:05:06,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 00:05:06,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:05:06,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:05:06,258 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:05:06,258 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:05:05" (3/4) ... [2021-12-07 00:05:06,260 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-07 00:05:06,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:05:06,261 INFO L158 Benchmark]: Toolchain (without parser) took 1113.11ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 68.1MB in the end (delta: 4.6MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-12-07 00:05:06,262 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:05:06,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.66ms. Allocated memory is still 109.1MB. Free memory was 72.4MB in the beginning and 81.2MB in the end (delta: -8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 00:05:06,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.06ms. Allocated memory is still 109.1MB. Free memory was 81.2MB in the beginning and 78.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:05:06,263 INFO L158 Benchmark]: Boogie Preprocessor took 29.36ms. Allocated memory is still 109.1MB. Free memory was 78.7MB in the beginning and 76.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:05:06,263 INFO L158 Benchmark]: RCFGBuilder took 363.73ms. Allocated memory is still 109.1MB. Free memory was 76.6MB in the beginning and 58.6MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-07 00:05:06,264 INFO L158 Benchmark]: TraceAbstraction took 428.96ms. Allocated memory is still 109.1MB. Free memory was 58.1MB in the beginning and 68.1MB in the end (delta: -9.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:05:06,264 INFO L158 Benchmark]: Witness Printer took 3.04ms. Allocated memory is still 109.1MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:05:06,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.66ms. Allocated memory is still 109.1MB. Free memory was 72.4MB in the beginning and 81.2MB in the end (delta: -8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.06ms. Allocated memory is still 109.1MB. Free memory was 81.2MB in the beginning and 78.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.36ms. Allocated memory is still 109.1MB. Free memory was 78.7MB in the beginning and 76.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 363.73ms. Allocated memory is still 109.1MB. Free memory was 76.6MB in the beginning and 58.6MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 428.96ms. Allocated memory is still 109.1MB. Free memory was 58.1MB in the beginning and 68.1MB in the end (delta: -9.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.04ms. Allocated memory is still 109.1MB. Free memory is still 68.1MB. There was no memory consumed. 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 - UnprovableResult [Line: 193]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={4:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L189] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=8589934592, one_fmod=1, x=0, y=8589934592, Zero_fmod={4:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=8589934592, lx=8589934591, ly=8589934593, one_fmod=1, sx=-1, x=0, y=8589934592, Zero_fmod={4:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=8589934592, hx=2146435072, lx=8589934591, ly=8589934593, one_fmod=1, sx=-1, x=0, y=8589934592, Zero_fmod={4:0}] [L189] RET, EXPR fmod_double(x, y) [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=8589934594, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=8589934592, Zero_fmod={4:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] reach_error() VAL [one_fmod=1, res=8589934594, x=0, y=8589934592, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 89 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-07 00:05:06,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa --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 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:05:07,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:05:07,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:05:07,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:05:07,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:05:07,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:05:07,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:05:07,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:05:07,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:05:07,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:05:07,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:05:07,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:05:07,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:05:07,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:05:07,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:05:07,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:05:07,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:05:07,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:05:07,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:05:07,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:05:07,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:05:07,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:05:07,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:05:07,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:05:07,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:05:07,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:05:07,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:05:07,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:05:07,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:05:07,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:05:07,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:05:07,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:05:07,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:05:07,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:05:07,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:05:07,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:05:07,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:05:07,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:05:07,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:05:07,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:05:07,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:05:07,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-07 00:05:07,959 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:05:07,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:05:07,960 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:05:07,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:05:07,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:05:07,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:05:07,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:05:07,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:05:07,961 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:05:07,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:05:07,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:05:07,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:05:07,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:05:07,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:05:07,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:05:07,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:05:07,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-07 00:05:07,963 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-07 00:05:07,963 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-07 00:05:07,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:05:07,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:05:07,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:05:07,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:05:07,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:05:07,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:05:07,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:05:07,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:05:07,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:05:07,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:05:07,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:05:07,965 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-07 00:05:07,965 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-07 00:05:07,965 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:05:07,965 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:05:07,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:05:07,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:05:07,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-07 00:05:07,966 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 [2021-12-07 00:05:08,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:05:08,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:05:08,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:05:08,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:05:08,235 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:05:08,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2021-12-07 00:05:08,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/data/4de135c14/474c68a7abc94cf9aa0d18c35ac1a13f/FLAGf441a7c07 [2021-12-07 00:05:08,647 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:05:08,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2021-12-07 00:05:08,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/data/4de135c14/474c68a7abc94cf9aa0d18c35ac1a13f/FLAGf441a7c07 [2021-12-07 00:05:08,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/data/4de135c14/474c68a7abc94cf9aa0d18c35ac1a13f [2021-12-07 00:05:08,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:05:08,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:05:08,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:05:08,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:05:08,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:05:08,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:05:08" (1/1) ... [2021-12-07 00:05:08,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dcf7068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08, skipping insertion in model container [2021-12-07 00:05:08,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:05:08" (1/1) ... [2021-12-07 00:05:08,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:05:08,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:05:08,838 WARN L230 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_f121bf15-5dc7-4de1-90c6-271c2d08a183/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2021-12-07 00:05:08,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:05:08,851 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:05:08,904 WARN L230 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_f121bf15-5dc7-4de1-90c6-271c2d08a183/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2021-12-07 00:05:08,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:05:08,922 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:05:08,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08 WrapperNode [2021-12-07 00:05:08,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:05:08,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:05:08,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:05:08,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:05:08,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08" (1/1) ... [2021-12-07 00:05:08,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08" (1/1) ... [2021-12-07 00:05:08,968 INFO L137 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 242 [2021-12-07 00:05:08,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:05:08,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:05:08,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:05:08,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:05:08,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08" (1/1) ... [2021-12-07 00:05:08,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08" (1/1) ... [2021-12-07 00:05:08,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08" (1/1) ... [2021-12-07 00:05:08,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08" (1/1) ... [2021-12-07 00:05:08,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08" (1/1) ... [2021-12-07 00:05:09,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08" (1/1) ... [2021-12-07 00:05:09,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08" (1/1) ... [2021-12-07 00:05:09,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:05:09,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:05:09,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:05:09,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:05:09,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08" (1/1) ... [2021-12-07 00:05:09,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:05:09,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:05:09,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:05:09,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:05:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:05:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-07 00:05:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-07 00:05:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-07 00:05:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:05:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-12-07 00:05:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-07 00:05:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:05:09,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:05:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-07 00:05:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:05:09,156 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:05:09,157 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:05:12,293 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:05:12,299 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:05:12,299 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-07 00:05:12,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:05:12 BoogieIcfgContainer [2021-12-07 00:05:12,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:05:12,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:05:12,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:05:12,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:05:12,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:05:08" (1/3) ... [2021-12-07 00:05:12,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc00df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:05:12, skipping insertion in model container [2021-12-07 00:05:12,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:05:08" (2/3) ... [2021-12-07 00:05:12,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc00df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:05:12, skipping insertion in model container [2021-12-07 00:05:12,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:05:12" (3/3) ... [2021-12-07 00:05:12,308 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2021-12-07 00:05:12,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:05:12,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:05:12,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:05:12,350 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:05:12,350 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:05:12,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:12,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-07 00:05:12,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:12,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:12,365 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:12,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:12,369 INFO L85 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2021-12-07 00:05:12,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:12,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559848377] [2021-12-07 00:05:12,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:12,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:12,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:12,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:12,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-07 00:05:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:13,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-07 00:05:13,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:13,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:13,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:13,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559848377] [2021-12-07 00:05:13,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559848377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:13,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:13,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:05:13,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464968491] [2021-12-07 00:05:13,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:13,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:05:13,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:13,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:05:13,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:05:13,264 INFO L87 Difference]: Start difference. First operand has 61 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:13,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:13,281 INFO L93 Difference]: Finished difference Result 119 states and 208 transitions. [2021-12-07 00:05:13,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:05:13,282 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-07 00:05:13,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:13,289 INFO L225 Difference]: With dead ends: 119 [2021-12-07 00:05:13,289 INFO L226 Difference]: Without dead ends: 57 [2021-12-07 00:05:13,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:05:13,294 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:13,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:05:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-07 00:05:13,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-07 00:05:13,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.5) internal successors, (84), 56 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2021-12-07 00:05:13,327 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2021-12-07 00:05:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:13,327 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2021-12-07 00:05:13,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2021-12-07 00:05:13,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-07 00:05:13,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:13,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:13,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:05:13,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:13,531 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:13,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:13,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2021-12-07 00:05:13,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:13,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377776673] [2021-12-07 00:05:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:13,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:13,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:13,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:13,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-07 00:05:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:14,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-07 00:05:14,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:14,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2021-12-07 00:05:15,234 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:05:15,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-12-07 00:05:15,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-12-07 00:05:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:18,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:18,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:18,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377776673] [2021-12-07 00:05:18,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377776673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:18,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:18,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:05:18,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368326599] [2021-12-07 00:05:18,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:18,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:05:18,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:18,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:05:18,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2021-12-07 00:05:18,304 INFO L87 Difference]: Start difference. First operand 57 states and 84 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:20,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:05:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:20,104 INFO L93 Difference]: Finished difference Result 66 states and 93 transitions. [2021-12-07 00:05:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:05:20,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-07 00:05:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:20,137 INFO L225 Difference]: With dead ends: 66 [2021-12-07 00:05:20,137 INFO L226 Difference]: Without dead ends: 57 [2021-12-07 00:05:20,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=21, Invalid=50, Unknown=1, NotChecked=0, Total=72 [2021-12-07 00:05:20,139 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 5 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:20,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 350 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 116 Unchecked, 1.5s Time] [2021-12-07 00:05:20,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-07 00:05:20,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-07 00:05:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 56 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2021-12-07 00:05:20,146 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 13 [2021-12-07 00:05:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:20,146 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2021-12-07 00:05:20,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:20,147 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2021-12-07 00:05:20,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-07 00:05:20,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:20,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:20,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-07 00:05:20,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:20,349 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash 734189607, now seen corresponding path program 1 times [2021-12-07 00:05:20,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:20,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623035732] [2021-12-07 00:05:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:20,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:20,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:20,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:20,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-07 00:05:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:20,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:05:20,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:20,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:20,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:20,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623035732] [2021-12-07 00:05:20,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623035732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:20,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:20,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:05:20,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746910550] [2021-12-07 00:05:20,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:20,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:05:20,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:20,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:05:20,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:05:20,767 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:22,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:05:22,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:22,719 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2021-12-07 00:05:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:05:22,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-07 00:05:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:22,720 INFO L225 Difference]: With dead ends: 78 [2021-12-07 00:05:22,721 INFO L226 Difference]: Without dead ends: 75 [2021-12-07 00:05:22,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:05:22,722 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 187 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:22,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 241 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-07 00:05:22,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-07 00:05:22,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2021-12-07 00:05:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 58 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 85 transitions. [2021-12-07 00:05:22,730 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 85 transitions. Word has length 15 [2021-12-07 00:05:22,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:22,730 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 85 transitions. [2021-12-07 00:05:22,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:22,730 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 85 transitions. [2021-12-07 00:05:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-07 00:05:22,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:22,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:22,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-07 00:05:22,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:22,933 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1151454894, now seen corresponding path program 1 times [2021-12-07 00:05:22,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:22,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458572804] [2021-12-07 00:05:22,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:22,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:22,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:22,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:22,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-07 00:05:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:23,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-07 00:05:23,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:23,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-07 00:05:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:24,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:24,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:24,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458572804] [2021-12-07 00:05:24,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458572804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:24,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:24,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:05:24,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896278527] [2021-12-07 00:05:24,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:24,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:05:24,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:24,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:05:24,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:05:24,298 INFO L87 Difference]: Start difference. First operand 59 states and 85 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) [2021-12-07 00:05:26,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:05:26,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:26,604 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2021-12-07 00:05:26,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:05:26,633 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 16 [2021-12-07 00:05:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:26,633 INFO L225 Difference]: With dead ends: 68 [2021-12-07 00:05:26,633 INFO L226 Difference]: Without dead ends: 59 [2021-12-07 00:05:26,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:05:26,635 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 9 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:26,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 342 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 98 Unchecked, 2.1s Time] [2021-12-07 00:05:26,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-07 00:05:26,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-12-07 00:05:26,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 58 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2021-12-07 00:05:26,643 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 16 [2021-12-07 00:05:26,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:26,644 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2021-12-07 00:05:26,644 INFO L471 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) [2021-12-07 00:05:26,644 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2021-12-07 00:05:26,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-07 00:05:26,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:26,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:26,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-07 00:05:26,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:26,847 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:26,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1071102724, now seen corresponding path program 1 times [2021-12-07 00:05:26,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:26,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090952854] [2021-12-07 00:05:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:26,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:26,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:26,854 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:26,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-07 00:05:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:26,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-07 00:05:26,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:27,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:27,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:27,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090952854] [2021-12-07 00:05:27,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090952854] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:27,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:27,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:05:27,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192679579] [2021-12-07 00:05:27,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:27,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:05:27,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:05:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:05:27,859 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:30,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:05:31,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:31,089 INFO L93 Difference]: Finished difference Result 77 states and 100 transitions. [2021-12-07 00:05:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:05:31,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-07 00:05:31,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:31,090 INFO L225 Difference]: With dead ends: 77 [2021-12-07 00:05:31,090 INFO L226 Difference]: Without dead ends: 68 [2021-12-07 00:05:31,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:05:31,092 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 174 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:31,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 530 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 10 Unchecked, 2.4s Time] [2021-12-07 00:05:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-07 00:05:31,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2021-12-07 00:05:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 56 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 81 transitions. [2021-12-07 00:05:31,097 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 81 transitions. Word has length 19 [2021-12-07 00:05:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:31,098 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 81 transitions. [2021-12-07 00:05:31,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 81 transitions. [2021-12-07 00:05:31,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 00:05:31,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:31,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:31,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-07 00:05:31,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:31,301 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:31,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2103758894, now seen corresponding path program 1 times [2021-12-07 00:05:31,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:31,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817929206] [2021-12-07 00:05:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:31,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:31,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:31,307 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:31,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-07 00:05:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:31,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:05:31,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:32,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:32,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:32,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817929206] [2021-12-07 00:05:32,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817929206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:32,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:32,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:05:32,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294646148] [2021-12-07 00:05:32,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:32,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:05:32,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:32,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:05:32,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:05:32,121 INFO L87 Difference]: Start difference. First operand 57 states and 81 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:34,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:05:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:34,382 INFO L93 Difference]: Finished difference Result 102 states and 149 transitions. [2021-12-07 00:05:34,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:05:34,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-07 00:05:34,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:34,410 INFO L225 Difference]: With dead ends: 102 [2021-12-07 00:05:34,410 INFO L226 Difference]: Without dead ends: 57 [2021-12-07 00:05:34,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:05:34,411 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 9 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:34,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 307 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 60 Unchecked, 2.1s Time] [2021-12-07 00:05:34,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-07 00:05:34,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-07 00:05:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 56 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2021-12-07 00:05:34,419 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 24 [2021-12-07 00:05:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:34,419 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2021-12-07 00:05:34,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:34,419 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2021-12-07 00:05:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-07 00:05:34,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:34,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:34,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-07 00:05:34,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:34,622 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:34,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1391759413, now seen corresponding path program 1 times [2021-12-07 00:05:34,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:34,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655794565] [2021-12-07 00:05:34,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:34,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:34,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:34,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:34,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-07 00:05:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:34,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 00:05:34,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:35,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:35,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:35,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655794565] [2021-12-07 00:05:35,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655794565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:35,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:35,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:05:35,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770859390] [2021-12-07 00:05:35,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:35,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:05:35,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:35,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:05:35,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:05:35,312 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:37,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:05:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:37,567 INFO L93 Difference]: Finished difference Result 96 states and 138 transitions. [2021-12-07 00:05:37,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:05:37,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-07 00:05:37,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:37,598 INFO L225 Difference]: With dead ends: 96 [2021-12-07 00:05:37,598 INFO L226 Difference]: Without dead ends: 57 [2021-12-07 00:05:37,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:05:37,599 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 9 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:37,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 253 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 26 Unchecked, 2.1s Time] [2021-12-07 00:05:37,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-07 00:05:37,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-07 00:05:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 56 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2021-12-07 00:05:37,607 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 26 [2021-12-07 00:05:37,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:37,607 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2021-12-07 00:05:37,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:37,607 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2021-12-07 00:05:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 00:05:37,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:37,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:37,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-07 00:05:37,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:37,810 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:37,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:37,811 INFO L85 PathProgramCache]: Analyzing trace with hash -244554330, now seen corresponding path program 1 times [2021-12-07 00:05:37,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:37,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620964594] [2021-12-07 00:05:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:37,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:37,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:37,816 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:37,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-07 00:05:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:37,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 00:05:37,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:38,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:38,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:38,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620964594] [2021-12-07 00:05:38,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620964594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:38,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:38,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:05:38,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334076959] [2021-12-07 00:05:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:38,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:05:38,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:05:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:05:38,535 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:40,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:05:40,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:40,763 INFO L93 Difference]: Finished difference Result 96 states and 137 transitions. [2021-12-07 00:05:40,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:05:40,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-07 00:05:40,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:40,793 INFO L225 Difference]: With dead ends: 96 [2021-12-07 00:05:40,793 INFO L226 Difference]: Without dead ends: 55 [2021-12-07 00:05:40,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:05:40,794 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 9 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:40,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 235 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 25 Unchecked, 2.1s Time] [2021-12-07 00:05:40,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-07 00:05:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-12-07 00:05:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 54 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 75 transitions. [2021-12-07 00:05:40,798 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 75 transitions. Word has length 28 [2021-12-07 00:05:40,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:40,799 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 75 transitions. [2021-12-07 00:05:40,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 75 transitions. [2021-12-07 00:05:40,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 00:05:40,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:40,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:40,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-07 00:05:41,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:41,001 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:41,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:41,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1905417094, now seen corresponding path program 1 times [2021-12-07 00:05:41,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:41,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227789322] [2021-12-07 00:05:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:41,004 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:41,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:41,007 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:41,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-07 00:05:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:41,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:05:41,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:41,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:41,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:41,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227789322] [2021-12-07 00:05:41,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227789322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:41,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:41,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:05:41,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937354713] [2021-12-07 00:05:41,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:41,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:05:41,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:41,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:05:41,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:05:41,270 INFO L87 Difference]: Start difference. First operand 55 states and 75 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:41,334 INFO L93 Difference]: Finished difference Result 126 states and 179 transitions. [2021-12-07 00:05:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:05:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-07 00:05:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:41,336 INFO L225 Difference]: With dead ends: 126 [2021-12-07 00:05:41,336 INFO L226 Difference]: Without dead ends: 95 [2021-12-07 00:05:41,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:05:41,338 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 56 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:41,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 141 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:05:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-07 00:05:41,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 63. [2021-12-07 00:05:41,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2021-12-07 00:05:41,346 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 28 [2021-12-07 00:05:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:41,346 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2021-12-07 00:05:41,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:41,346 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2021-12-07 00:05:41,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-07 00:05:41,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:41,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:41,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-07 00:05:41,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:41,549 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:41,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:41,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1604243380, now seen corresponding path program 1 times [2021-12-07 00:05:41,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:41,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33120711] [2021-12-07 00:05:41,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:41,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:41,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:41,550 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:41,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-07 00:05:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:41,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 00:05:41,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:42,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:42,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:42,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33120711] [2021-12-07 00:05:42,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33120711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:42,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:42,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:05:42,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291240254] [2021-12-07 00:05:42,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:42,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:05:42,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:42,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:05:42,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:05:42,766 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:44,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:05:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:44,694 INFO L93 Difference]: Finished difference Result 97 states and 137 transitions. [2021-12-07 00:05:44,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:05:44,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 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 [2021-12-07 00:05:44,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:44,728 INFO L225 Difference]: With dead ends: 97 [2021-12-07 00:05:44,728 INFO L226 Difference]: Without dead ends: 63 [2021-12-07 00:05:44,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:05:44,729 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 11 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:44,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 289 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 38 Unchecked, 1.7s Time] [2021-12-07 00:05:44,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-07 00:05:44,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-12-07 00:05:44,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 62 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2021-12-07 00:05:44,733 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 29 [2021-12-07 00:05:44,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:44,733 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2021-12-07 00:05:44,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:44,734 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2021-12-07 00:05:44,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-07 00:05:44,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:44,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:44,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-07 00:05:44,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:44,936 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:44,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1093238151, now seen corresponding path program 1 times [2021-12-07 00:05:44,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:44,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809380953] [2021-12-07 00:05:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:44,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:44,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:44,942 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:44,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-07 00:05:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:45,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:05:45,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:45,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:45,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:45,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809380953] [2021-12-07 00:05:45,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809380953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:45,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:45,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:05:45,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216052208] [2021-12-07 00:05:45,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:45,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:05:45,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:45,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:05:45,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:05:45,586 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:45,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:45,590 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2021-12-07 00:05:45,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:05:45,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-07 00:05:45,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:45,590 INFO L225 Difference]: With dead ends: 99 [2021-12-07 00:05:45,591 INFO L226 Difference]: Without dead ends: 65 [2021-12-07 00:05:45,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:05:45,591 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 2 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:45,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 236 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2021-12-07 00:05:45,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-07 00:05:45,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-12-07 00:05:45,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.375) internal successors, (88), 64 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 88 transitions. [2021-12-07 00:05:45,596 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 88 transitions. Word has length 31 [2021-12-07 00:05:45,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:45,596 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 88 transitions. [2021-12-07 00:05:45,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:45,596 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 88 transitions. [2021-12-07 00:05:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-07 00:05:45,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:45,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:45,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-07 00:05:45,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:45,798 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:45,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:45,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1051757721, now seen corresponding path program 1 times [2021-12-07 00:05:45,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:45,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373676658] [2021-12-07 00:05:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:45,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:45,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:45,804 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:45,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-07 00:05:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:45,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:05:45,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:46,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:46,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:46,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373676658] [2021-12-07 00:05:46,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373676658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:46,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:46,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:05:46,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455106215] [2021-12-07 00:05:46,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:46,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:05:46,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:46,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:05:46,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:05:46,065 INFO L87 Difference]: Start difference. First operand 65 states and 88 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:46,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:46,191 INFO L93 Difference]: Finished difference Result 128 states and 179 transitions. [2021-12-07 00:05:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:05:46,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-07 00:05:46,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:46,198 INFO L225 Difference]: With dead ends: 128 [2021-12-07 00:05:46,198 INFO L226 Difference]: Without dead ends: 99 [2021-12-07 00:05:46,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:05:46,199 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 41 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:46,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 133 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:05:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-07 00:05:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2021-12-07 00:05:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 83 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 120 transitions. [2021-12-07 00:05:46,204 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 120 transitions. Word has length 31 [2021-12-07 00:05:46,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:46,204 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 120 transitions. [2021-12-07 00:05:46,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:46,204 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2021-12-07 00:05:46,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 00:05:46,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:46,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:46,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-07 00:05:46,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:46,406 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:46,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1156639288, now seen corresponding path program 1 times [2021-12-07 00:05:46,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:46,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580943969] [2021-12-07 00:05:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:46,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:46,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:46,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:46,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-07 00:05:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:46,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:05:46,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:46,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:46,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:46,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:46,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580943969] [2021-12-07 00:05:46,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580943969] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:46,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:46,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:05:46,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71621560] [2021-12-07 00:05:46,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:46,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:05:46,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:05:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:05:46,702 INFO L87 Difference]: Start difference. First operand 84 states and 120 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 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) [2021-12-07 00:05:47,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:47,032 INFO L93 Difference]: Finished difference Result 139 states and 189 transitions. [2021-12-07 00:05:47,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:05:47,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 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 32 [2021-12-07 00:05:47,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:47,034 INFO L225 Difference]: With dead ends: 139 [2021-12-07 00:05:47,034 INFO L226 Difference]: Without dead ends: 108 [2021-12-07 00:05:47,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:05:47,035 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 53 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:47,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 200 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:05:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-07 00:05:47,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2021-12-07 00:05:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.423529411764706) internal successors, (121), 85 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 121 transitions. [2021-12-07 00:05:47,040 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 121 transitions. Word has length 32 [2021-12-07 00:05:47,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:47,040 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 121 transitions. [2021-12-07 00:05:47,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 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) [2021-12-07 00:05:47,040 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 121 transitions. [2021-12-07 00:05:47,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 00:05:47,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:47,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:47,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-07 00:05:47,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:47,243 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:47,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:47,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1857703866, now seen corresponding path program 1 times [2021-12-07 00:05:47,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:47,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281794528] [2021-12-07 00:05:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:47,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:47,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:47,248 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:47,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-07 00:05:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:47,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:05:47,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:47,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:47,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:47,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281794528] [2021-12-07 00:05:47,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281794528] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:47,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:47,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:05:47,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738732039] [2021-12-07 00:05:47,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:47,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:05:47,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:47,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:05:47,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:05:47,825 INFO L87 Difference]: Start difference. First operand 86 states and 121 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2021-12-07 00:05:48,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:48,402 INFO L93 Difference]: Finished difference Result 177 states and 244 transitions. [2021-12-07 00:05:48,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:05:48,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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 32 [2021-12-07 00:05:48,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:48,404 INFO L225 Difference]: With dead ends: 177 [2021-12-07 00:05:48,404 INFO L226 Difference]: Without dead ends: 145 [2021-12-07 00:05:48,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:05:48,406 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 99 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:48,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 384 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 00:05:48,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-07 00:05:48,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 92. [2021-12-07 00:05:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.4065934065934067) internal successors, (128), 91 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 128 transitions. [2021-12-07 00:05:48,412 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 128 transitions. Word has length 32 [2021-12-07 00:05:48,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:48,412 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 128 transitions. [2021-12-07 00:05:48,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2021-12-07 00:05:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 128 transitions. [2021-12-07 00:05:48,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 00:05:48,412 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:48,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:48,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-07 00:05:48,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:48,613 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:48,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:48,613 INFO L85 PathProgramCache]: Analyzing trace with hash 930771680, now seen corresponding path program 1 times [2021-12-07 00:05:48,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:48,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382827651] [2021-12-07 00:05:48,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:48,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:48,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:48,614 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:48,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-07 00:05:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:48,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:05:48,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:48,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:05:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:49,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:49,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382827651] [2021-12-07 00:05:49,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382827651] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:05:49,210 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:05:49,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-07 00:05:49,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631684373] [2021-12-07 00:05:49,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:05:49,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:05:49,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:49,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:05:49,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:05:49,211 INFO L87 Difference]: Start difference. First operand 92 states and 128 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:49,479 INFO L93 Difference]: Finished difference Result 360 states and 523 transitions. [2021-12-07 00:05:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:05:49,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-07 00:05:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:49,482 INFO L225 Difference]: With dead ends: 360 [2021-12-07 00:05:49,482 INFO L226 Difference]: Without dead ends: 313 [2021-12-07 00:05:49,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:05:49,483 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 442 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:49,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 372 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:05:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-07 00:05:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 102. [2021-12-07 00:05:49,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.4158415841584158) internal successors, (143), 101 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 143 transitions. [2021-12-07 00:05:49,490 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 143 transitions. Word has length 33 [2021-12-07 00:05:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:49,491 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 143 transitions. [2021-12-07 00:05:49,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 143 transitions. [2021-12-07 00:05:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 00:05:49,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:49,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:49,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-07 00:05:49,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:49,693 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:49,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:49,694 INFO L85 PathProgramCache]: Analyzing trace with hash 714531849, now seen corresponding path program 1 times [2021-12-07 00:05:49,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:49,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124002226] [2021-12-07 00:05:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:49,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:49,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:49,698 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:49,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-07 00:05:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:49,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:05:49,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:50,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:05:50,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:50,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:50,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124002226] [2021-12-07 00:05:50,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124002226] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:05:50,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:05:50,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-07 00:05:50,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624099992] [2021-12-07 00:05:50,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:05:50,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:05:50,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:50,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:05:50,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:05:50,262 INFO L87 Difference]: Start difference. First operand 102 states and 143 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:50,706 INFO L93 Difference]: Finished difference Result 237 states and 339 transitions. [2021-12-07 00:05:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:05:50,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-07 00:05:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:50,709 INFO L225 Difference]: With dead ends: 237 [2021-12-07 00:05:50,709 INFO L226 Difference]: Without dead ends: 208 [2021-12-07 00:05:50,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:05:50,710 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 171 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:50,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 373 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 00:05:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-07 00:05:50,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 166. [2021-12-07 00:05:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.496969696969697) internal successors, (247), 165 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:50,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 247 transitions. [2021-12-07 00:05:50,725 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 247 transitions. Word has length 33 [2021-12-07 00:05:50,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:50,726 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 247 transitions. [2021-12-07 00:05:50,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:50,726 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 247 transitions. [2021-12-07 00:05:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 00:05:50,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:50,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:50,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-07 00:05:50,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:50,928 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:50,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:50,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2071939666, now seen corresponding path program 1 times [2021-12-07 00:05:50,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:50,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367737909] [2021-12-07 00:05:50,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:50,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:50,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:50,929 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:50,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-07 00:05:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:51,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:05:51,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:52,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:52,507 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:52,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367737909] [2021-12-07 00:05:52,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367737909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:52,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:52,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-07 00:05:52,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234613354] [2021-12-07 00:05:52,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:52,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:05:52,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:52,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:05:52,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:05:52,509 INFO L87 Difference]: Start difference. First operand 166 states and 247 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:53,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:53,031 INFO L93 Difference]: Finished difference Result 271 states and 386 transitions. [2021-12-07 00:05:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:05:53,032 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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) Word has length 33 [2021-12-07 00:05:53,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:53,033 INFO L225 Difference]: With dead ends: 271 [2021-12-07 00:05:53,034 INFO L226 Difference]: Without dead ends: 237 [2021-12-07 00:05:53,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:05:53,034 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 63 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:53,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 657 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 213 Unchecked, 0.3s Time] [2021-12-07 00:05:53,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-07 00:05:53,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 170. [2021-12-07 00:05:53,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.4911242603550297) internal successors, (252), 169 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:53,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 252 transitions. [2021-12-07 00:05:53,044 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 252 transitions. Word has length 33 [2021-12-07 00:05:53,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:53,045 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 252 transitions. [2021-12-07 00:05:53,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:53,045 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 252 transitions. [2021-12-07 00:05:53,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 00:05:53,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:53,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:53,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-07 00:05:53,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:53,247 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:53,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:53,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2014681364, now seen corresponding path program 1 times [2021-12-07 00:05:53,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:53,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599924386] [2021-12-07 00:05:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:53,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:53,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:53,252 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:53,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-07 00:05:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:53,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 00:05:53,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:57,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:05:57,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:05:57,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599924386] [2021-12-07 00:05:57,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599924386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:05:57,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:05:57,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-07 00:05:57,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402740750] [2021-12-07 00:05:57,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:05:57,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:05:57,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:05:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:05:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:05:57,261 INFO L87 Difference]: Start difference. First operand 170 states and 252 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:05:57,273 INFO L93 Difference]: Finished difference Result 185 states and 270 transitions. [2021-12-07 00:05:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:05:57,273 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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) Word has length 33 [2021-12-07 00:05:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:05:57,274 INFO L225 Difference]: With dead ends: 185 [2021-12-07 00:05:57,274 INFO L226 Difference]: Without dead ends: 176 [2021-12-07 00:05:57,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:05:57,275 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 9 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:05:57,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 269 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 150 Unchecked, 0.0s Time] [2021-12-07 00:05:57,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-12-07 00:05:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 171. [2021-12-07 00:05:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.4941176470588236) internal successors, (254), 170 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:57,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 254 transitions. [2021-12-07 00:05:57,284 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 254 transitions. Word has length 33 [2021-12-07 00:05:57,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:05:57,285 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 254 transitions. [2021-12-07 00:05:57,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:05:57,285 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 254 transitions. [2021-12-07 00:05:57,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 00:05:57,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:05:57,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:05:57,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-07 00:05:57,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:05:57,487 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:05:57,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:05:57,488 INFO L85 PathProgramCache]: Analyzing trace with hash -296932304, now seen corresponding path program 1 times [2021-12-07 00:05:57,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:05:57,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78626295] [2021-12-07 00:05:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:05:57,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:05:57,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:05:57,491 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:05:57,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-07 00:05:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:05:57,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-07 00:05:57,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:06,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:06:06,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:06,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78626295] [2021-12-07 00:06:06,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78626295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:06,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:06:06,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-07 00:06:06,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140480271] [2021-12-07 00:06:06,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:06,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-07 00:06:06,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:06,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-07 00:06:06,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-12-07 00:06:06,189 INFO L87 Difference]: Start difference. First operand 171 states and 254 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:08,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:06:08,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:08,575 INFO L93 Difference]: Finished difference Result 181 states and 265 transitions. [2021-12-07 00:06:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 00:06:08,576 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 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) Word has length 33 [2021-12-07 00:06:08,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:08,577 INFO L225 Difference]: With dead ends: 181 [2021-12-07 00:06:08,577 INFO L226 Difference]: Without dead ends: 172 [2021-12-07 00:06:08,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:06:08,578 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 9 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:08,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 446 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 215 Unchecked, 2.1s Time] [2021-12-07 00:06:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-07 00:06:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2021-12-07 00:06:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.4911242603550297) internal successors, (252), 169 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 252 transitions. [2021-12-07 00:06:08,589 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 252 transitions. Word has length 33 [2021-12-07 00:06:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:08,590 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 252 transitions. [2021-12-07 00:06:08,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 252 transitions. [2021-12-07 00:06:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 00:06:08,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:08,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:08,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-07 00:06:08,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:08,792 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash 161858632, now seen corresponding path program 1 times [2021-12-07 00:06:08,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:08,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731584359] [2021-12-07 00:06:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:08,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:08,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:08,797 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:08,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-07 00:06:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:08,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:06:08,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:10,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:10,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:06:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:11,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:11,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731584359] [2021-12-07 00:06:11,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731584359] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-07 00:06:11,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:06:11,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-12-07 00:06:11,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559221699] [2021-12-07 00:06:11,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:11,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:06:11,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:11,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:06:11,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:06:11,860 INFO L87 Difference]: Start difference. First operand 170 states and 252 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:12,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:12,963 INFO L93 Difference]: Finished difference Result 223 states and 315 transitions. [2021-12-07 00:06:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:06:12,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-07 00:06:12,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:12,966 INFO L225 Difference]: With dead ends: 223 [2021-12-07 00:06:12,966 INFO L226 Difference]: Without dead ends: 183 [2021-12-07 00:06:12,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:06:12,967 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 115 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:12,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 334 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 99 Invalid, 0 Unknown, 23 Unchecked, 0.8s Time] [2021-12-07 00:06:12,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-07 00:06:12,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 155. [2021-12-07 00:06:12,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.4675324675324675) internal successors, (226), 154 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 226 transitions. [2021-12-07 00:06:12,977 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 226 transitions. Word has length 34 [2021-12-07 00:06:12,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:12,977 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 226 transitions. [2021-12-07 00:06:12,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:12,978 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 226 transitions. [2021-12-07 00:06:12,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 00:06:12,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:12,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:12,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-07 00:06:13,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:13,179 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:13,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2058729830, now seen corresponding path program 1 times [2021-12-07 00:06:13,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:13,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471731655] [2021-12-07 00:06:13,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:13,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:13,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:13,184 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:13,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-07 00:06:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:13,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:06:13,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:13,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:06:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:13,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:13,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471731655] [2021-12-07 00:06:13,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471731655] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:06:13,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:06:13,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-07 00:06:13,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563413724] [2021-12-07 00:06:13,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:06:13,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:06:13,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:13,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:06:13,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:06:13,946 INFO L87 Difference]: Start difference. First operand 155 states and 226 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:15,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:15,181 INFO L93 Difference]: Finished difference Result 313 states and 427 transitions. [2021-12-07 00:06:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:06:15,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 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) Word has length 34 [2021-12-07 00:06:15,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:15,184 INFO L225 Difference]: With dead ends: 313 [2021-12-07 00:06:15,184 INFO L226 Difference]: Without dead ends: 260 [2021-12-07 00:06:15,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:06:15,185 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 201 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:15,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 500 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-07 00:06:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-12-07 00:06:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 171. [2021-12-07 00:06:15,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.464705882352941) internal successors, (249), 170 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 249 transitions. [2021-12-07 00:06:15,196 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 249 transitions. Word has length 34 [2021-12-07 00:06:15,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:15,196 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 249 transitions. [2021-12-07 00:06:15,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 249 transitions. [2021-12-07 00:06:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 00:06:15,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:15,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:15,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-07 00:06:15,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:15,400 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:15,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:15,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1357665252, now seen corresponding path program 1 times [2021-12-07 00:06:15,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:15,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418237784] [2021-12-07 00:06:15,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:15,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:15,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:15,405 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:15,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-07 00:06:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:15,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:06:15,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:17,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:06:17,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:17,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418237784] [2021-12-07 00:06:17,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418237784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:17,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:06:17,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:06:17,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488931526] [2021-12-07 00:06:17,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:17,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:06:17,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:17,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:06:17,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:06:17,147 INFO L87 Difference]: Start difference. First operand 171 states and 249 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:19,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:06:19,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:19,527 INFO L93 Difference]: Finished difference Result 236 states and 348 transitions. [2021-12-07 00:06:19,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:06:19,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-07 00:06:19,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:19,529 INFO L225 Difference]: With dead ends: 236 [2021-12-07 00:06:19,529 INFO L226 Difference]: Without dead ends: 119 [2021-12-07 00:06:19,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:06:19,530 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 11 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:19,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 357 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 71 Unchecked, 2.1s Time] [2021-12-07 00:06:19,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-07 00:06:19,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-12-07 00:06:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4067796610169492) internal successors, (166), 118 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:19,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 166 transitions. [2021-12-07 00:06:19,538 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 166 transitions. Word has length 34 [2021-12-07 00:06:19,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:19,538 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 166 transitions. [2021-12-07 00:06:19,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:19,538 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 166 transitions. [2021-12-07 00:06:19,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 00:06:19,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:19,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:19,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-07 00:06:19,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:19,740 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:19,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:19,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1761290204, now seen corresponding path program 1 times [2021-12-07 00:06:19,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:19,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218879765] [2021-12-07 00:06:19,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:19,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:19,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:19,745 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:19,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-07 00:06:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:19,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:06:19,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:21,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:06:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:06:21,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:21,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218879765] [2021-12-07 00:06:21,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218879765] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-07 00:06:21,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:06:21,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2021-12-07 00:06:21,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080141838] [2021-12-07 00:06:21,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:21,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:06:21,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:21,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:06:21,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:06:21,865 INFO L87 Difference]: Start difference. First operand 119 states and 166 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:21,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:21,872 INFO L93 Difference]: Finished difference Result 143 states and 199 transitions. [2021-12-07 00:06:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:06:21,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-07 00:06:21,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:21,873 INFO L225 Difference]: With dead ends: 143 [2021-12-07 00:06:21,873 INFO L226 Difference]: Without dead ends: 134 [2021-12-07 00:06:21,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:06:21,874 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:21,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 173 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2021-12-07 00:06:21,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-12-07 00:06:21,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 125. [2021-12-07 00:06:21,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 124 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 175 transitions. [2021-12-07 00:06:21,883 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 175 transitions. Word has length 34 [2021-12-07 00:06:21,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:21,883 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 175 transitions. [2021-12-07 00:06:21,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 175 transitions. [2021-12-07 00:06:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 00:06:21,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:21,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:21,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-07 00:06:22,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:22,084 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:22,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:22,085 INFO L85 PathProgramCache]: Analyzing trace with hash 13717158, now seen corresponding path program 1 times [2021-12-07 00:06:22,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:22,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56944648] [2021-12-07 00:06:22,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:22,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:22,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:22,086 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:22,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-07 00:06:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:22,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 00:06:22,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:22,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-07 00:06:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:26,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:06:36,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2021-12-07 00:06:38,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:38,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:38,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56944648] [2021-12-07 00:06:38,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56944648] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:06:38,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:06:38,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2021-12-07 00:06:38,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169347801] [2021-12-07 00:06:38,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:06:38,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-07 00:06:38,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:38,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-07 00:06:38,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2021-12-07 00:06:38,288 INFO L87 Difference]: Start difference. First operand 125 states and 175 transitions. Second operand has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:41,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:06:43,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:06:43,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:43,898 INFO L93 Difference]: Finished difference Result 240 states and 340 transitions. [2021-12-07 00:06:43,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-07 00:06:43,899 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-07 00:06:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:43,900 INFO L225 Difference]: With dead ends: 240 [2021-12-07 00:06:43,900 INFO L226 Difference]: Without dead ends: 193 [2021-12-07 00:06:43,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2021-12-07 00:06:43,901 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 59 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:43,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 901 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 2 Unknown, 181 Unchecked, 5.2s Time] [2021-12-07 00:06:43,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-12-07 00:06:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 147. [2021-12-07 00:06:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.417808219178082) internal successors, (207), 146 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 207 transitions. [2021-12-07 00:06:43,911 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 207 transitions. Word has length 34 [2021-12-07 00:06:43,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:43,911 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 207 transitions. [2021-12-07 00:06:43,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:43,912 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 207 transitions. [2021-12-07 00:06:43,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 00:06:43,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:43,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:43,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-12-07 00:06:44,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:44,113 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:44,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash -573088856, now seen corresponding path program 1 times [2021-12-07 00:06:44,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:44,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692952318] [2021-12-07 00:06:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:44,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:44,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:44,114 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:44,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-07 00:06:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:44,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:06:44,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:06:44,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:06:44,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:44,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692952318] [2021-12-07 00:06:44,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692952318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:06:44,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:06:44,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:06:44,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758769190] [2021-12-07 00:06:44,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:06:44,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:06:44,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:44,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:06:44,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:06:44,453 INFO L87 Difference]: Start difference. First operand 147 states and 207 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:44,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:44,733 INFO L93 Difference]: Finished difference Result 278 states and 406 transitions. [2021-12-07 00:06:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:06:44,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-07 00:06:44,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:44,736 INFO L225 Difference]: With dead ends: 278 [2021-12-07 00:06:44,736 INFO L226 Difference]: Without dead ends: 213 [2021-12-07 00:06:44,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:06:44,736 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 48 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:44,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 185 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:06:44,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-07 00:06:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 151. [2021-12-07 00:06:44,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.4) internal successors, (210), 150 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:44,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 210 transitions. [2021-12-07 00:06:44,747 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 210 transitions. Word has length 34 [2021-12-07 00:06:44,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:44,747 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 210 transitions. [2021-12-07 00:06:44,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 210 transitions. [2021-12-07 00:06:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-07 00:06:44,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:44,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:44,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-12-07 00:06:44,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:44,949 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:44,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:44,950 INFO L85 PathProgramCache]: Analyzing trace with hash 916883856, now seen corresponding path program 1 times [2021-12-07 00:06:44,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:44,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742294088] [2021-12-07 00:06:44,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:44,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:44,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:44,954 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:44,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-07 00:06:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:45,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:06:45,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:45,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:06:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:46,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:46,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742294088] [2021-12-07 00:06:46,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742294088] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:06:46,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:06:46,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-12-07 00:06:46,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438608433] [2021-12-07 00:06:46,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:06:46,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:06:46,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:46,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:06:46,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:06:46,426 INFO L87 Difference]: Start difference. First operand 151 states and 210 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:49,618 INFO L93 Difference]: Finished difference Result 473 states and 646 transitions. [2021-12-07 00:06:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 00:06:49,619 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-07 00:06:49,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:49,621 INFO L225 Difference]: With dead ends: 473 [2021-12-07 00:06:49,621 INFO L226 Difference]: Without dead ends: 436 [2021-12-07 00:06:49,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:06:49,622 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 508 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:49,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 923 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-07 00:06:49,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-12-07 00:06:49,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 164. [2021-12-07 00:06:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.3803680981595092) internal successors, (225), 163 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 225 transitions. [2021-12-07 00:06:49,633 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 225 transitions. Word has length 35 [2021-12-07 00:06:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:49,633 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 225 transitions. [2021-12-07 00:06:49,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 225 transitions. [2021-12-07 00:06:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-07 00:06:49,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:49,633 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:49,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-12-07 00:06:49,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:49,835 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:49,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:49,836 INFO L85 PathProgramCache]: Analyzing trace with hash -718331347, now seen corresponding path program 1 times [2021-12-07 00:06:49,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:49,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806778911] [2021-12-07 00:06:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:49,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:49,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:49,840 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:49,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-07 00:06:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:49,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:06:49,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:50,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:06:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:50,588 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:50,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806778911] [2021-12-07 00:06:50,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806778911] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:06:50,588 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:06:50,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-07 00:06:50,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424835608] [2021-12-07 00:06:50,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:06:50,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:06:50,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:50,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:06:50,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:06:50,590 INFO L87 Difference]: Start difference. First operand 164 states and 225 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:51,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:51,355 INFO L93 Difference]: Finished difference Result 378 states and 519 transitions. [2021-12-07 00:06:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:06:51,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-07 00:06:51,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:51,358 INFO L225 Difference]: With dead ends: 378 [2021-12-07 00:06:51,358 INFO L226 Difference]: Without dead ends: 344 [2021-12-07 00:06:51,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:06:51,358 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 500 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:51,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 549 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 00:06:51,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-07 00:06:51,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 249. [2021-12-07 00:06:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.435483870967742) internal successors, (356), 248 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:51,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 356 transitions. [2021-12-07 00:06:51,377 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 356 transitions. Word has length 35 [2021-12-07 00:06:51,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:51,377 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 356 transitions. [2021-12-07 00:06:51,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:51,377 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 356 transitions. [2021-12-07 00:06:51,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-07 00:06:51,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:51,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:51,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-12-07 00:06:51,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:51,578 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:51,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:51,579 INFO L85 PathProgramCache]: Analyzing trace with hash -511940056, now seen corresponding path program 1 times [2021-12-07 00:06:51,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:51,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163699105] [2021-12-07 00:06:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:51,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:51,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:51,580 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:51,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-07 00:06:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:51,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:06:51,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:52,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:06:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:52,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:52,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163699105] [2021-12-07 00:06:52,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163699105] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:06:52,834 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:06:52,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-12-07 00:06:52,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441808755] [2021-12-07 00:06:52,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:06:52,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:06:52,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:06:52,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:06:52,835 INFO L87 Difference]: Start difference. First operand 249 states and 356 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:54,426 INFO L93 Difference]: Finished difference Result 548 states and 804 transitions. [2021-12-07 00:06:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:06:54,427 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 36 [2021-12-07 00:06:54,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:54,430 INFO L225 Difference]: With dead ends: 548 [2021-12-07 00:06:54,430 INFO L226 Difference]: Without dead ends: 509 [2021-12-07 00:06:54,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:06:54,431 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 234 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:54,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 713 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:06:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-12-07 00:06:54,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 261. [2021-12-07 00:06:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.4230769230769231) internal successors, (370), 260 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 370 transitions. [2021-12-07 00:06:54,449 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 370 transitions. Word has length 36 [2021-12-07 00:06:54,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:54,449 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 370 transitions. [2021-12-07 00:06:54,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 370 transitions. [2021-12-07 00:06:54,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-07 00:06:54,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:54,450 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:54,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-07 00:06:54,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:54,650 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1120969594, now seen corresponding path program 1 times [2021-12-07 00:06:54,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:54,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066085828] [2021-12-07 00:06:54,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:54,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:54,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:54,652 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:54,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-07 00:06:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:54,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:06:54,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:06:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:55,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:06:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:06:55,637 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:06:55,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066085828] [2021-12-07 00:06:55,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066085828] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:06:55,638 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:06:55,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-12-07 00:06:55,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213233061] [2021-12-07 00:06:55,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:06:55,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:06:55,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:06:55,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:06:55,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:06:55,639 INFO L87 Difference]: Start difference. First operand 261 states and 370 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:06:57,879 INFO L93 Difference]: Finished difference Result 508 states and 676 transitions. [2021-12-07 00:06:57,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:06:57,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 36 [2021-12-07 00:06:57,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:06:57,882 INFO L225 Difference]: With dead ends: 508 [2021-12-07 00:06:57,882 INFO L226 Difference]: Without dead ends: 430 [2021-12-07 00:06:57,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:06:57,883 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 618 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:06:57,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 692 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:06:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-12-07 00:06:57,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 272. [2021-12-07 00:06:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.4206642066420665) internal successors, (385), 271 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 385 transitions. [2021-12-07 00:06:57,899 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 385 transitions. Word has length 36 [2021-12-07 00:06:57,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:06:57,899 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 385 transitions. [2021-12-07 00:06:57,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:06:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 385 transitions. [2021-12-07 00:06:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 00:06:57,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:06:57,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:06:57,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-12-07 00:06:58,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:06:58,101 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:06:58,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:06:58,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1801379406, now seen corresponding path program 1 times [2021-12-07 00:06:58,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:06:58,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444251730] [2021-12-07 00:06:58,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:06:58,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:06:58,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:06:58,106 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:06:58,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-07 00:06:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:06:58,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:06:58,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:07:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:07:00,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:07:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:07:01,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:07:01,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444251730] [2021-12-07 00:07:01,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444251730] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-07 00:07:01,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:07:01,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2021-12-07 00:07:01,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282194102] [2021-12-07 00:07:01,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:01,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:07:01,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:07:01,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:07:01,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:07:01,052 INFO L87 Difference]: Start difference. First operand 272 states and 385 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:01,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:01,070 INFO L93 Difference]: Finished difference Result 337 states and 484 transitions. [2021-12-07 00:07:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:07:01,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-07 00:07:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:01,071 INFO L225 Difference]: With dead ends: 337 [2021-12-07 00:07:01,072 INFO L226 Difference]: Without dead ends: 328 [2021-12-07 00:07:01,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:07:01,072 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 52 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:01,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 176 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2021-12-07 00:07:01,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-12-07 00:07:01,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 286. [2021-12-07 00:07:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.424561403508772) internal successors, (406), 285 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 406 transitions. [2021-12-07 00:07:01,087 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 406 transitions. Word has length 37 [2021-12-07 00:07:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:01,087 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 406 transitions. [2021-12-07 00:07:01,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 406 transitions. [2021-12-07 00:07:01,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 00:07:01,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:01,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:07:01,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-12-07 00:07:01,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:07:01,289 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:01,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:01,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1858637708, now seen corresponding path program 1 times [2021-12-07 00:07:01,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:07:01,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695212509] [2021-12-07 00:07:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:01,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:07:01,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:07:01,294 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:07:01,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-07 00:07:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:01,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 00:07:01,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:07:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:07:02,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:07:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:07:03,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:07:03,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695212509] [2021-12-07 00:07:03,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695212509] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:07:03,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:07:03,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-12-07 00:07:03,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19207221] [2021-12-07 00:07:03,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:07:03,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:07:03,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:07:03,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:07:03,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:07:03,527 INFO L87 Difference]: Start difference. First operand 286 states and 406 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:05,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:05,018 INFO L93 Difference]: Finished difference Result 636 states and 942 transitions. [2021-12-07 00:07:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:07:05,019 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 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 37 [2021-12-07 00:07:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:05,022 INFO L225 Difference]: With dead ends: 636 [2021-12-07 00:07:05,022 INFO L226 Difference]: Without dead ends: 500 [2021-12-07 00:07:05,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:07:05,022 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 52 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:05,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 357 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 110 Unchecked, 1.0s Time] [2021-12-07 00:07:05,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-12-07 00:07:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 387. [2021-12-07 00:07:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.4145077720207253) internal successors, (546), 386 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 546 transitions. [2021-12-07 00:07:05,054 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 546 transitions. Word has length 37 [2021-12-07 00:07:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:05,054 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 546 transitions. [2021-12-07 00:07:05,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 546 transitions. [2021-12-07 00:07:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 00:07:05,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:05,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:07:05,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-12-07 00:07:05,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:07:05,256 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:05,256 INFO L85 PathProgramCache]: Analyzing trace with hash -718580528, now seen corresponding path program 1 times [2021-12-07 00:07:05,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:07:05,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793858883] [2021-12-07 00:07:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:05,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:07:05,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:07:05,258 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:07:05,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-07 00:07:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:05,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-07 00:07:05,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:07:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:07:16,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:07:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:07:28,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:07:28,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793858883] [2021-12-07 00:07:28,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793858883] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:07:28,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:07:28,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17] total 39 [2021-12-07 00:07:28,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341305129] [2021-12-07 00:07:28,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:07:28,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-07 00:07:28,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:07:28,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-07 00:07:28,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1221, Unknown=0, NotChecked=0, Total=1482 [2021-12-07 00:07:28,963 INFO L87 Difference]: Start difference. First operand 387 states and 546 transitions. Second operand has 39 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 39 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:46,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:07:53,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-07 00:07:53,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:53,497 INFO L93 Difference]: Finished difference Result 525 states and 736 transitions. [2021-12-07 00:07:53,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-07 00:07:53,500 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 39 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-07 00:07:53,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:53,503 INFO L225 Difference]: With dead ends: 525 [2021-12-07 00:07:53,503 INFO L226 Difference]: Without dead ends: 516 [2021-12-07 00:07:53,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=467, Invalid=2395, Unknown=0, NotChecked=0, Total=2862 [2021-12-07 00:07:53,504 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 101 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 434 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:53,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 1303 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 712 Invalid, 1 Unknown, 434 Unchecked, 12.9s Time] [2021-12-07 00:07:53,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-12-07 00:07:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 394. [2021-12-07 00:07:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.4122137404580153) internal successors, (555), 393 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 555 transitions. [2021-12-07 00:07:53,528 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 555 transitions. Word has length 37 [2021-12-07 00:07:53,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:53,528 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 555 transitions. [2021-12-07 00:07:53,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 39 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 555 transitions. [2021-12-07 00:07:53,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 00:07:53,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:53,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:07:53,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-12-07 00:07:53,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:07:53,730 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:53,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:53,731 INFO L85 PathProgramCache]: Analyzing trace with hash -661322226, now seen corresponding path program 1 times [2021-12-07 00:07:53,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:07:53,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741015498] [2021-12-07 00:07:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:07:53,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:07:53,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:07:53,735 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:07:53,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-12-07 00:07:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:07:53,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 00:07:53,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:07:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:07:54,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:07:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:07:55,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:07:55,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741015498] [2021-12-07 00:07:55,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741015498] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:07:55,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:07:55,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-12-07 00:07:55,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996044978] [2021-12-07 00:07:55,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:07:55,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:07:55,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:07:55,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:07:55,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:07:55,974 INFO L87 Difference]: Start difference. First operand 394 states and 555 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:57,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:57,074 INFO L93 Difference]: Finished difference Result 513 states and 731 transitions. [2021-12-07 00:07:57,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:07:57,075 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 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 37 [2021-12-07 00:07:57,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:57,079 INFO L225 Difference]: With dead ends: 513 [2021-12-07 00:07:57,079 INFO L226 Difference]: Without dead ends: 504 [2021-12-07 00:07:57,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:07:57,080 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 27 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:57,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 404 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 162 Unchecked, 1.0s Time] [2021-12-07 00:07:57,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-12-07 00:07:57,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 440. [2021-12-07 00:07:57,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.4145785876993167) internal successors, (621), 439 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:57,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 621 transitions. [2021-12-07 00:07:57,108 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 621 transitions. Word has length 37 [2021-12-07 00:07:57,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:57,108 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 621 transitions. [2021-12-07 00:07:57,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:57,108 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 621 transitions. [2021-12-07 00:07:57,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-07 00:07:57,109 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:07:57,109 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:07:57,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-12-07 00:07:57,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:07:57,310 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:07:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:07:57,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1137618218, now seen corresponding path program 2 times [2021-12-07 00:07:57,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:07:57,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173016662] [2021-12-07 00:07:57,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:07:57,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:07:57,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:07:57,315 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:07:57,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-12-07 00:07:57,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:07:57,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:07:57,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-07 00:07:57,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:07:57,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-12-07 00:07:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:07:58,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:07:58,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:07:58,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173016662] [2021-12-07 00:07:58,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173016662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:07:58,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:07:58,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:07:58,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156204106] [2021-12-07 00:07:58,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:07:58,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:07:58,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:07:58,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:07:58,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:07:58,723 INFO L87 Difference]: Start difference. First operand 440 states and 621 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:59,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:07:59,012 INFO L93 Difference]: Finished difference Result 440 states and 621 transitions. [2021-12-07 00:07:59,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:07:59,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-07 00:07:59,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:07:59,013 INFO L225 Difference]: With dead ends: 440 [2021-12-07 00:07:59,013 INFO L226 Difference]: Without dead ends: 0 [2021-12-07 00:07:59,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:07:59,014 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:07:59,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 15 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2021-12-07 00:07:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-07 00:07:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-07 00:07:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-07 00:07:59,018 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-12-07 00:07:59,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:07:59,018 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 00:07:59,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:07:59,018 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-07 00:07:59,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-07 00:07:59,021 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 00:07:59,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-12-07 00:07:59,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:07:59,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-07 00:08:00,023 INFO L858 garLoopResultBuilder]: For program point L35-2(lines 35 40) no Hoare annotation was computed. [2021-12-07 00:08:00,023 INFO L854 garLoopResultBuilder]: At program point L68-3(lines 68 69) the Hoare annotation is: false [2021-12-07 00:08:00,023 INFO L858 garLoopResultBuilder]: For program point L168-1(lines 168 172) no Hoare annotation was computed. [2021-12-07 00:08:00,023 INFO L854 garLoopResultBuilder]: At program point L168-2(lines 168 172) the Hoare annotation is: (and (= |ULTIMATE.start_fmod_double_~x#1| (_ +zero 11 53)) |ULTIMATE.start_main_#t~short18#1| (= |ULTIMATE.start_main_~res~0#1| (_ +zero 11 53)) (= (_ +zero 11 53) |ULTIMATE.start_fmod_double_#res#1|) (= (_ +zero 11 53) |ULTIMATE.start_main_~x~0#1|) (= (_ +zero 11 53) |ULTIMATE.start___signbit_double_~x#1|)) [2021-12-07 00:08:00,023 INFO L858 garLoopResultBuilder]: For program point L168-3(lines 168 172) no Hoare annotation was computed. [2021-12-07 00:08:00,024 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-07 00:08:00,024 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 136 141) no Hoare annotation was computed. [2021-12-07 00:08:00,024 INFO L858 garLoopResultBuilder]: For program point L103-1(lines 103 117) no Hoare annotation was computed. [2021-12-07 00:08:00,024 INFO L854 garLoopResultBuilder]: At program point L136-2(lines 136 141) the Hoare annotation is: false [2021-12-07 00:08:00,024 INFO L858 garLoopResultBuilder]: For program point L103-3(lines 103 117) no Hoare annotation was computed. [2021-12-07 00:08:00,024 INFO L858 garLoopResultBuilder]: For program point L120(lines 120 121) no Hoare annotation was computed. [2021-12-07 00:08:00,024 INFO L858 garLoopResultBuilder]: For program point L120-2(lines 25 163) no Hoare annotation was computed. [2021-12-07 00:08:00,024 INFO L858 garLoopResultBuilder]: For program point L71-2(lines 71 72) no Hoare annotation was computed. [2021-12-07 00:08:00,024 INFO L854 garLoopResultBuilder]: At program point L71-3(lines 71 72) the Hoare annotation is: false [2021-12-07 00:08:00,024 INFO L858 garLoopResultBuilder]: For program point L187(lines 187 196) no Hoare annotation was computed. [2021-12-07 00:08:00,024 INFO L858 garLoopResultBuilder]: For program point L154(lines 154 159) no Hoare annotation was computed. [2021-12-07 00:08:00,024 INFO L858 garLoopResultBuilder]: For program point L154-1(lines 142 161) no Hoare annotation was computed. [2021-12-07 00:08:00,024 INFO L858 garLoopResultBuilder]: For program point L187-2(lines 187 196) no Hoare annotation was computed. [2021-12-07 00:08:00,024 INFO L858 garLoopResultBuilder]: For program point L154-2(lines 154 159) no Hoare annotation was computed. [2021-12-07 00:08:00,025 INFO L858 garLoopResultBuilder]: For program point L55(lines 25 163) no Hoare annotation was computed. [2021-12-07 00:08:00,025 INFO L858 garLoopResultBuilder]: For program point L122-1(lines 25 163) no Hoare annotation was computed. [2021-12-07 00:08:00,025 INFO L858 garLoopResultBuilder]: For program point L56(lines 56 62) no Hoare annotation was computed. [2021-12-07 00:08:00,025 INFO L858 garLoopResultBuilder]: For program point L106(lines 106 107) no Hoare annotation was computed. [2021-12-07 00:08:00,025 INFO L858 garLoopResultBuilder]: For program point L106-2(lines 103 117) no Hoare annotation was computed. [2021-12-07 00:08:00,025 INFO L858 garLoopResultBuilder]: For program point L57-2(lines 57 58) no Hoare annotation was computed. [2021-12-07 00:08:00,025 INFO L854 garLoopResultBuilder]: At program point L57-3(lines 57 58) the Hoare annotation is: false [2021-12-07 00:08:00,025 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-07 00:08:00,025 INFO L854 garLoopResultBuilder]: At program point L174(lines 165 175) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short18#1| (= (_ bv0 32) |ULTIMATE.start___signbit_double_#res#1|) (= (_ +zero 11 53) |ULTIMATE.start_main_~x~0#1|)) [2021-12-07 00:08:00,025 INFO L854 garLoopResultBuilder]: At program point L108-1(lines 103 117) the Hoare annotation is: false [2021-12-07 00:08:00,025 INFO L858 garLoopResultBuilder]: For program point L192(line 192) no Hoare annotation was computed. [2021-12-07 00:08:00,025 INFO L858 garLoopResultBuilder]: For program point L192-2(lines 192 195) no Hoare annotation was computed. [2021-12-07 00:08:00,025 INFO L858 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-12-07 00:08:00,025 INFO L858 garLoopResultBuilder]: For program point L93-2(lines 89 100) no Hoare annotation was computed. [2021-12-07 00:08:00,026 INFO L858 garLoopResultBuilder]: For program point L60-2(lines 60 61) no Hoare annotation was computed. [2021-12-07 00:08:00,026 INFO L854 garLoopResultBuilder]: At program point L60-3(lines 60 61) the Hoare annotation is: false [2021-12-07 00:08:00,026 INFO L858 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2021-12-07 00:08:00,026 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-07 00:08:00,026 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 153) no Hoare annotation was computed. [2021-12-07 00:08:00,026 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 47) no Hoare annotation was computed. [2021-12-07 00:08:00,026 INFO L858 garLoopResultBuilder]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2021-12-07 00:08:00,026 INFO L854 garLoopResultBuilder]: At program point L29-2(lines 29 34) the Hoare annotation is: (and (= |ULTIMATE.start_fmod_double_~x#1| (_ +zero 11 53)) (or (fp.gt |ULTIMATE.start_fmod_double_~y#1| (_ +zero 11 53)) (fp.lt |ULTIMATE.start_fmod_double_~y#1| (_ +zero 11 53))) (= (_ +zero 11 53) |ULTIMATE.start_main_~x~0#1|)) [2021-12-07 00:08:00,026 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 113) no Hoare annotation was computed. [2021-12-07 00:08:00,026 INFO L854 garLoopResultBuilder]: At program point L162(lines 25 163) the Hoare annotation is: (and (= |ULTIMATE.start_fmod_double_~x#1| (_ +zero 11 53)) (= (_ +zero 11 53) |ULTIMATE.start_fmod_double_#res#1|) (= (_ +zero 11 53) |ULTIMATE.start_main_~x~0#1|)) [2021-12-07 00:08:00,026 INFO L854 garLoopResultBuilder]: At program point L129-2(lines 129 133) the Hoare annotation is: false [2021-12-07 00:08:00,026 INFO L858 garLoopResultBuilder]: For program point L129-3(lines 25 163) no Hoare annotation was computed. [2021-12-07 00:08:00,026 INFO L858 garLoopResultBuilder]: For program point L147(lines 147 153) no Hoare annotation was computed. [2021-12-07 00:08:00,026 INFO L858 garLoopResultBuilder]: For program point L81(lines 81 87) no Hoare annotation was computed. [2021-12-07 00:08:00,026 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 53) no Hoare annotation was computed. [2021-12-07 00:08:00,027 INFO L858 garLoopResultBuilder]: For program point L81-2(lines 25 163) no Hoare annotation was computed. [2021-12-07 00:08:00,027 INFO L858 garLoopResultBuilder]: For program point L48-2(lines 25 163) no Hoare annotation was computed. [2021-12-07 00:08:00,027 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-07 00:08:00,027 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2021-12-07 00:08:00,027 INFO L858 garLoopResultBuilder]: For program point L49(lines 49 50) no Hoare annotation was computed. [2021-12-07 00:08:00,027 INFO L861 garLoopResultBuilder]: At program point L198(lines 177 199) the Hoare annotation is: true [2021-12-07 00:08:00,027 INFO L858 garLoopResultBuilder]: For program point L66(lines 25 163) no Hoare annotation was computed. [2021-12-07 00:08:00,027 INFO L858 garLoopResultBuilder]: For program point L67(lines 67 73) no Hoare annotation was computed. [2021-12-07 00:08:00,027 INFO L858 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-12-07 00:08:00,027 INFO L858 garLoopResultBuilder]: For program point L134(lines 134 161) no Hoare annotation was computed. [2021-12-07 00:08:00,027 INFO L858 garLoopResultBuilder]: For program point L35(lines 35 40) no Hoare annotation was computed. [2021-12-07 00:08:00,027 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 25 163) no Hoare annotation was computed. [2021-12-07 00:08:00,027 INFO L858 garLoopResultBuilder]: For program point L68-2(lines 68 69) no Hoare annotation was computed. [2021-12-07 00:08:00,030 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:08:00,031 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 00:08:00,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:08:00 BoogieIcfgContainer [2021-12-07 00:08:00,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 00:08:00,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:08:00,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:08:00,044 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:08:00,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:05:12" (3/4) ... [2021-12-07 00:08:00,047 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-07 00:08:00,057 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-07 00:08:00,057 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-12-07 00:08:00,057 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-07 00:08:00,057 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-07 00:08:00,080 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 00:08:00,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:08:00,080 INFO L158 Benchmark]: Toolchain (without parser) took 171415.02ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.0MB in the beginning and 31.1MB in the end (delta: -2.1MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2021-12-07 00:08:00,081 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 52.4MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:08:00,081 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.01ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 28.8MB in the beginning and 47.6MB in the end (delta: -18.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-12-07 00:08:00,081 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.17ms. Allocated memory is still 67.1MB. Free memory was 47.4MB in the beginning and 45.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:08:00,082 INFO L158 Benchmark]: Boogie Preprocessor took 42.84ms. Allocated memory is still 67.1MB. Free memory was 45.1MB in the beginning and 42.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:08:00,082 INFO L158 Benchmark]: RCFGBuilder took 3288.63ms. Allocated memory is still 67.1MB. Free memory was 42.9MB in the beginning and 38.9MB in the end (delta: 4.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-07 00:08:00,082 INFO L158 Benchmark]: TraceAbstraction took 167741.22ms. Allocated memory is still 67.1MB. Free memory was 38.6MB in the beginning and 33.8MB in the end (delta: 4.8MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-12-07 00:08:00,082 INFO L158 Benchmark]: Witness Printer took 35.78ms. Allocated memory is still 67.1MB. Free memory was 33.8MB in the beginning and 31.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-07 00:08:00,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 52.4MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.01ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 28.8MB in the beginning and 47.6MB in the end (delta: -18.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.17ms. Allocated memory is still 67.1MB. Free memory was 47.4MB in the beginning and 45.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.84ms. Allocated memory is still 67.1MB. Free memory was 45.1MB in the beginning and 42.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 3288.63ms. Allocated memory is still 67.1MB. Free memory was 42.9MB in the beginning and 38.9MB in the end (delta: 4.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 167741.22ms. Allocated memory is still 67.1MB. Free memory was 38.6MB in the beginning and 33.8MB in the end (delta: 4.8MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Witness Printer took 35.78ms. Allocated memory is still 67.1MB. Free memory was 33.8MB in the beginning and 31.1MB in the end (delta: 2.7MB). 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 - PositiveResult [Line: 193]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 167.7s, OverallIterations: 34, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 68.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 3900 SdHoareTripleChecker+Valid, 48.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3900 mSDsluCounter, 13429 SdHoareTripleChecker+Invalid, 46.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2060 IncrementalHoareTripleChecker+Unchecked, 10627 mSDsCounter, 269 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2325 IncrementalHoareTripleChecker+Invalid, 4662 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 269 mSolverCounterUnsat, 2802 mSDtfsCounter, 2325 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1573 GetRequests, 1215 SyntacticMatches, 3 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 70.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=440occurred in iteration=33, InterpolantAutomatonStates: 325, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 34 MinimizatonAttempts, 1824 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 12 PreInvPairs, 19 NumberOfFragments, 57 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 444 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 85.3s InterpolantComputationTime, 1032 NumberOfCodeBlocks, 1026 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 1476 ConstructedInterpolants, 288 QuantifiedInterpolants, 11410 SizeOfPredicates, 206 NumberOfNonLiveVariables, 3501 ConjunctsInSsa, 358 ConjunctsInUnsatCore, 48 InterpolantComputations, 23 PerfectInterpolantSequences, 15/57 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 165]: Loop Invariant Derived loop invariant: (aux-res == 0.0 && __signbit_double(res) == 0-aux && 0bv32 == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 177]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && (~fp.gt~DOUBLE(y, ~Pluszero~LONGDOUBLE()) || ~fp.lt~DOUBLE(y, ~Pluszero~LONGDOUBLE()))) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 168]: Loop Invariant Derived loop invariant: ((((x == ~Pluszero~LONGDOUBLE() && aux-res == 0.0 && __signbit_double(res) == 0-aux) && res == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == x RESULT: Ultimate proved your program to be correct! [2021-12-07 00:08:00,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f121bf15-5dc7-4de1-90c6-271c2d08a183/bin/uautomizer-DrprNOufMa/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 Result: TRUE