./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:55:28,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:55:28,756 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 23:55:28,760 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:55:28,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:55:28,781 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:55:28,782 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:55:28,782 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:55:28,783 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:55:28,783 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:55:28,784 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:55:28,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:55:28,785 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:55:28,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:55:28,786 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:55:28,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:55:28,788 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:55:28,788 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:55:28,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:55:28,789 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:55:28,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:55:28,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:55:28,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:55:28,791 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:55:28,792 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:55:28,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:55:28,792 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:55:28,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:55:28,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:55:28,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:55:28,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:55:28,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:55:28,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:55:28,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:55:28,796 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:55:28,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:55:28,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:55:28,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:55:28,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:55:28,797 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:55:28,797 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:55:28,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:55:28,797 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 [2023-11-28 23:55:29,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:55:29,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:55:29,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:55:29,035 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:55:29,035 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:55:29,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/bitvector/byte_add_1-1.i [2023-11-28 23:55:31,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:55:31,937 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:55:31,938 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/sv-benchmarks/c/bitvector/byte_add_1-1.i [2023-11-28 23:55:31,947 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/data/069872595/90a169b2cab44d088478751da74541ea/FLAG302d87c92 [2023-11-28 23:55:31,961 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/data/069872595/90a169b2cab44d088478751da74541ea [2023-11-28 23:55:31,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:55:31,967 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:55:31,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:55:31,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:55:31,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:55:31,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:55:31" (1/1) ... [2023-11-28 23:55:31,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e77f1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:31, skipping insertion in model container [2023-11-28 23:55:31,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:55:31" (1/1) ... [2023-11-28 23:55:32,004 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:55:32,151 WARN L240 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_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2023-11-28 23:55:32,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:55:32,203 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:55:32,216 WARN L240 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_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2023-11-28 23:55:32,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:55:32,251 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:55:32,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32 WrapperNode [2023-11-28 23:55:32,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:55:32,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:55:32,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:55:32,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:55:32,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,296 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 151 [2023-11-28 23:55:32,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:55:32,297 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:55:32,297 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:55:32,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:55:32,310 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,313 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,329 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-28 23:55:32,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:55:32,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:55:32,350 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:55:32,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:55:32,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (1/1) ... [2023-11-28 23:55:32,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:55:32,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:32,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:55:32,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:55:32,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:55:32,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:55:32,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:55:32,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:55:32,489 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:55:32,490 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:55:32,795 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:55:32,824 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:55:32,824 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-28 23:55:32,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:55:32 BoogieIcfgContainer [2023-11-28 23:55:32,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:55:32,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:55:32,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:55:32,830 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:55:32,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:55:31" (1/3) ... [2023-11-28 23:55:32,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325f2e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:55:32, skipping insertion in model container [2023-11-28 23:55:32,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:32" (2/3) ... [2023-11-28 23:55:32,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325f2e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:55:32, skipping insertion in model container [2023-11-28 23:55:32,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:55:32" (3/3) ... [2023-11-28 23:55:32,832 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2023-11-28 23:55:32,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:55:32,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 23:55:32,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:55:32,899 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3aa93616, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:55:32,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 23:55:32,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.880952380952381) internal successors, (79), 43 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) [2023-11-28 23:55:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-28 23:55:32,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:32,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:32,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:32,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash -701051337, now seen corresponding path program 1 times [2023-11-28 23:55:32,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:32,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074611385] [2023-11-28 23:55:32,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:32,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:33,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:33,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074611385] [2023-11-28 23:55:33,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074611385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:33,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:33,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:55:33,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102051789] [2023-11-28 23:55:33,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:33,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 23:55:33,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:33,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 23:55:33,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:55:33,161 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.880952380952381) internal successors, (79), 43 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2023-11-28 23:55:33,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:33,192 INFO L93 Difference]: Finished difference Result 62 states and 109 transitions. [2023-11-28 23:55:33,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 23:55:33,194 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 [2023-11-28 23:55:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:33,204 INFO L225 Difference]: With dead ends: 62 [2023-11-28 23:55:33,204 INFO L226 Difference]: Without dead ends: 42 [2023-11-28 23:55:33,207 INFO L412 NwaCegarLoop]: 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 [2023-11-28 23:55:33,210 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:33,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:33,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-28 23:55:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-11-28 23:55:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 74 transitions. [2023-11-28 23:55:33,241 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 74 transitions. Word has length 13 [2023-11-28 23:55:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:33,242 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 74 transitions. [2023-11-28 23:55:33,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2023-11-28 23:55:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 74 transitions. [2023-11-28 23:55:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-28 23:55:33,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:33,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:33,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:55:33,244 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:33,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:33,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1267888409, now seen corresponding path program 1 times [2023-11-28 23:55:33,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:33,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146020550] [2023-11-28 23:55:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:33,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:33,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:33,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146020550] [2023-11-28 23:55:33,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146020550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:33,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:33,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:55:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580830648] [2023-11-28 23:55:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:33,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:55:33,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:33,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:55:33,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:55:33,415 INFO L87 Difference]: Start difference. First operand 42 states and 74 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2023-11-28 23:55:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:33,558 INFO L93 Difference]: Finished difference Result 98 states and 177 transitions. [2023-11-28 23:55:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:55:33,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 [2023-11-28 23:55:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:33,560 INFO L225 Difference]: With dead ends: 98 [2023-11-28 23:55:33,560 INFO L226 Difference]: Without dead ends: 65 [2023-11-28 23:55:33,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:55:33,563 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 24 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:33,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 76 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:55:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-28 23:55:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2023-11-28 23:55:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.596774193548387) internal successors, (99), 62 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 99 transitions. [2023-11-28 23:55:33,575 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 99 transitions. Word has length 13 [2023-11-28 23:55:33,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:33,575 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 99 transitions. [2023-11-28 23:55:33,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2023-11-28 23:55:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 99 transitions. [2023-11-28 23:55:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-28 23:55:33,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:33,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:33,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:55:33,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:33,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:33,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1612037902, now seen corresponding path program 1 times [2023-11-28 23:55:33,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:33,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085460749] [2023-11-28 23:55:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:33,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:33,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:33,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085460749] [2023-11-28 23:55:33,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085460749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:33,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:33,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:55:33,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037151162] [2023-11-28 23:55:33,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:33,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:55:33,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:33,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:55:33,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:55:33,734 INFO L87 Difference]: Start difference. First operand 63 states and 99 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:34,008 INFO L93 Difference]: Finished difference Result 155 states and 270 transitions. [2023-11-28 23:55:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:55:34,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-28 23:55:34,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:34,011 INFO L225 Difference]: With dead ends: 155 [2023-11-28 23:55:34,011 INFO L226 Difference]: Without dead ends: 122 [2023-11-28 23:55:34,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:55:34,013 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 92 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:34,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 99 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:55:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-28 23:55:34,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2023-11-28 23:55:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.576470588235294) internal successors, (134), 85 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 134 transitions. [2023-11-28 23:55:34,026 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 134 transitions. Word has length 19 [2023-11-28 23:55:34,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:34,027 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 134 transitions. [2023-11-28 23:55:34,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,027 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 134 transitions. [2023-11-28 23:55:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-28 23:55:34,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:34,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:34,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:55:34,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:34,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1944328577, now seen corresponding path program 1 times [2023-11-28 23:55:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:34,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866346326] [2023-11-28 23:55:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:34,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-28 23:55:34,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:34,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866346326] [2023-11-28 23:55:34,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866346326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:34,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:34,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:55:34,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985505113] [2023-11-28 23:55:34,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:34,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:55:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:55:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:55:34,147 INFO L87 Difference]: Start difference. First operand 86 states and 134 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:34,327 INFO L93 Difference]: Finished difference Result 247 states and 380 transitions. [2023-11-28 23:55:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:55:34,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-28 23:55:34,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:34,330 INFO L225 Difference]: With dead ends: 247 [2023-11-28 23:55:34,330 INFO L226 Difference]: Without dead ends: 173 [2023-11-28 23:55:34,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:55:34,332 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 94 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:34,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 198 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:55:34,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-28 23:55:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 94. [2023-11-28 23:55:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.5376344086021505) internal successors, (143), 93 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) [2023-11-28 23:55:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 143 transitions. [2023-11-28 23:55:34,346 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 143 transitions. Word has length 25 [2023-11-28 23:55:34,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:34,346 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 143 transitions. [2023-11-28 23:55:34,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,347 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 143 transitions. [2023-11-28 23:55:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-28 23:55:34,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:34,348 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:34,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:55:34,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:34,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:34,349 INFO L85 PathProgramCache]: Analyzing trace with hash 889628198, now seen corresponding path program 1 times [2023-11-28 23:55:34,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:34,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662073022] [2023-11-28 23:55:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:34,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-28 23:55:34,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:34,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662073022] [2023-11-28 23:55:34,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662073022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:34,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:34,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:55:34,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599416408] [2023-11-28 23:55:34,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:34,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:55:34,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:55:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:55:34,488 INFO L87 Difference]: Start difference. First operand 94 states and 143 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:34,654 INFO L93 Difference]: Finished difference Result 268 states and 406 transitions. [2023-11-28 23:55:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:55:34,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-28 23:55:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:34,656 INFO L225 Difference]: With dead ends: 268 [2023-11-28 23:55:34,656 INFO L226 Difference]: Without dead ends: 193 [2023-11-28 23:55:34,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:55:34,658 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 98 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:34,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 206 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:55:34,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-28 23:55:34,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 104. [2023-11-28 23:55:34,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.5145631067961165) internal successors, (156), 103 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 156 transitions. [2023-11-28 23:55:34,671 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 156 transitions. Word has length 26 [2023-11-28 23:55:34,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:34,672 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 156 transitions. [2023-11-28 23:55:34,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 156 transitions. [2023-11-28 23:55:34,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-28 23:55:34,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:34,674 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:34,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:55:34,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:34,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:34,675 INFO L85 PathProgramCache]: Analyzing trace with hash -449843762, now seen corresponding path program 1 times [2023-11-28 23:55:34,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:34,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821938556] [2023-11-28 23:55:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:34,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:34,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:34,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821938556] [2023-11-28 23:55:34,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821938556] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:34,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222596131] [2023-11-28 23:55:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:34,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:34,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:34,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:34,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:55:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:34,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:55:34,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:55:34,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:34,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222596131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:34,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:55:34,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-28 23:55:34,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303863860] [2023-11-28 23:55:34,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:34,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:55:34,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:34,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:55:34,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:34,923 INFO L87 Difference]: Start difference. First operand 104 states and 156 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) [2023-11-28 23:55:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:35,119 INFO L93 Difference]: Finished difference Result 221 states and 354 transitions. [2023-11-28 23:55:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:55:35,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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 27 [2023-11-28 23:55:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:35,121 INFO L225 Difference]: With dead ends: 221 [2023-11-28 23:55:35,121 INFO L226 Difference]: Without dead ends: 149 [2023-11-28 23:55:35,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:35,123 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 37 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:35,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 134 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:55:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-28 23:55:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 133. [2023-11-28 23:55:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.446969696969697) internal successors, (191), 132 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2023-11-28 23:55:35,135 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 27 [2023-11-28 23:55:35,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:35,135 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2023-11-28 23:55:35,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) [2023-11-28 23:55:35,136 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2023-11-28 23:55:35,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-28 23:55:35,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:35,138 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:35,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:55:35,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:35,343 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:35,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:35,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1572960125, now seen corresponding path program 1 times [2023-11-28 23:55:35,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:35,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61436035] [2023-11-28 23:55:35,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:35,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:35,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:35,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61436035] [2023-11-28 23:55:35,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61436035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:35,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339997031] [2023-11-28 23:55:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:35,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:35,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:35,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:35,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:55:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:35,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:55:35,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:35,576 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:55:35,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:35,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339997031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:35,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:55:35,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-28 23:55:35,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309958908] [2023-11-28 23:55:35,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:35,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:55:35,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:35,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:55:35,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:55:35,585 INFO L87 Difference]: Start difference. First operand 133 states and 191 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:35,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:35,864 INFO L93 Difference]: Finished difference Result 525 states and 771 transitions. [2023-11-28 23:55:35,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:55:35,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-28 23:55:35,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:35,867 INFO L225 Difference]: With dead ends: 525 [2023-11-28 23:55:35,867 INFO L226 Difference]: Without dead ends: 396 [2023-11-28 23:55:35,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:55:35,869 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 176 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:35,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 356 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:55:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-28 23:55:35,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 303. [2023-11-28 23:55:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.4105960264900663) internal successors, (426), 302 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 426 transitions. [2023-11-28 23:55:35,888 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 426 transitions. Word has length 33 [2023-11-28 23:55:35,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:35,888 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 426 transitions. [2023-11-28 23:55:35,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:35,889 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 426 transitions. [2023-11-28 23:55:35,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-28 23:55:35,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:35,891 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:35,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:55:36,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:36,097 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:36,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:36,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1205786005, now seen corresponding path program 1 times [2023-11-28 23:55:36,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:36,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536644902] [2023-11-28 23:55:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:36,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536644902] [2023-11-28 23:55:36,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536644902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542415790] [2023-11-28 23:55:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:36,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:36,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:36,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:36,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:55:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:55:36,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-28 23:55:36,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:36,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542415790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:36,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:55:36,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2023-11-28 23:55:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77129800] [2023-11-28 23:55:36,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:36,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:55:36,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:36,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:55:36,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:55:36,337 INFO L87 Difference]: Start difference. First operand 303 states and 426 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:36,528 INFO L93 Difference]: Finished difference Result 709 states and 1033 transitions. [2023-11-28 23:55:36,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:55:36,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-28 23:55:36,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:36,531 INFO L225 Difference]: With dead ends: 709 [2023-11-28 23:55:36,531 INFO L226 Difference]: Without dead ends: 433 [2023-11-28 23:55:36,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:55:36,533 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 36 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:36,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 134 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:55:36,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-28 23:55:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 361. [2023-11-28 23:55:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.3777777777777778) internal successors, (496), 360 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 496 transitions. [2023-11-28 23:55:36,551 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 496 transitions. Word has length 34 [2023-11-28 23:55:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:36,551 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 496 transitions. [2023-11-28 23:55:36,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 496 transitions. [2023-11-28 23:55:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-28 23:55:36,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:36,553 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:36,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:55:36,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:36,759 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:36,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:36,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1759920966, now seen corresponding path program 1 times [2023-11-28 23:55:36,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:36,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925742219] [2023-11-28 23:55:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:36,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-28 23:55:36,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:36,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925742219] [2023-11-28 23:55:36,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925742219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:36,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:36,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:55:36,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118801301] [2023-11-28 23:55:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:36,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:55:36,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:36,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:55:36,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:55:36,899 INFO L87 Difference]: Start difference. First operand 361 states and 496 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 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) [2023-11-28 23:55:37,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:37,233 INFO L93 Difference]: Finished difference Result 1438 states and 1956 transitions. [2023-11-28 23:55:37,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:37,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 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 40 [2023-11-28 23:55:37,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:37,240 INFO L225 Difference]: With dead ends: 1438 [2023-11-28 23:55:37,240 INFO L226 Difference]: Without dead ends: 1110 [2023-11-28 23:55:37,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:55:37,242 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 199 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:37,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 401 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:55:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2023-11-28 23:55:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 361. [2023-11-28 23:55:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.3777777777777778) internal successors, (496), 360 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 496 transitions. [2023-11-28 23:55:37,271 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 496 transitions. Word has length 40 [2023-11-28 23:55:37,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:37,271 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 496 transitions. [2023-11-28 23:55:37,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 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) [2023-11-28 23:55:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 496 transitions. [2023-11-28 23:55:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-28 23:55:37,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:37,273 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:37,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 23:55:37,273 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:37,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1087520423, now seen corresponding path program 1 times [2023-11-28 23:55:37,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:37,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614834302] [2023-11-28 23:55:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:37,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-28 23:55:37,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:37,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614834302] [2023-11-28 23:55:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614834302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:37,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:37,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:55:37,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270252096] [2023-11-28 23:55:37,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:37,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:55:37,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:37,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:55:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:37,435 INFO L87 Difference]: Start difference. First operand 361 states and 496 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:37,919 INFO L93 Difference]: Finished difference Result 749 states and 1024 transitions. [2023-11-28 23:55:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:55:37,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-11-28 23:55:37,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:37,924 INFO L225 Difference]: With dead ends: 749 [2023-11-28 23:55:37,924 INFO L226 Difference]: Without dead ends: 614 [2023-11-28 23:55:37,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:55:37,925 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 284 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:37,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 621 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:55:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-11-28 23:55:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 372. [2023-11-28 23:55:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.3692722371967656) internal successors, (508), 371 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 508 transitions. [2023-11-28 23:55:37,955 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 508 transitions. Word has length 41 [2023-11-28 23:55:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:37,955 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 508 transitions. [2023-11-28 23:55:37,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,955 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 508 transitions. [2023-11-28 23:55:37,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-28 23:55:37,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:37,957 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:37,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 23:55:37,957 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:37,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:37,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1156462875, now seen corresponding path program 1 times [2023-11-28 23:55:37,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:37,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006167499] [2023-11-28 23:55:37,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:37,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-28 23:55:38,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:38,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006167499] [2023-11-28 23:55:38,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006167499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:38,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:38,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:55:38,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650416667] [2023-11-28 23:55:38,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:38,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:55:38,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:38,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:55:38,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:55:38,110 INFO L87 Difference]: Start difference. First operand 372 states and 508 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:38,143 INFO L93 Difference]: Finished difference Result 722 states and 983 transitions. [2023-11-28 23:55:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:55:38,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-11-28 23:55:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:38,146 INFO L225 Difference]: With dead ends: 722 [2023-11-28 23:55:38,146 INFO L226 Difference]: Without dead ends: 352 [2023-11-28 23:55:38,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:55:38,147 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 65 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:38,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 67 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-28 23:55:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2023-11-28 23:55:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.358974358974359) internal successors, (477), 351 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 477 transitions. [2023-11-28 23:55:38,174 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 477 transitions. Word has length 41 [2023-11-28 23:55:38,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:38,174 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 477 transitions. [2023-11-28 23:55:38,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,174 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 477 transitions. [2023-11-28 23:55:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-28 23:55:38,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:38,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2023-11-28 23:55:38,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 23:55:38,175 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:38,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash -49999210, now seen corresponding path program 1 times [2023-11-28 23:55:38,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:38,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629874350] [2023-11-28 23:55:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:38,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-28 23:55:38,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:38,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629874350] [2023-11-28 23:55:38,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629874350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:38,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:38,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:55:38,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689177752] [2023-11-28 23:55:38,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:38,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:55:38,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:38,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:55:38,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:55:38,259 INFO L87 Difference]: Start difference. First operand 352 states and 477 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2023-11-28 23:55:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:38,299 INFO L93 Difference]: Finished difference Result 492 states and 654 transitions. [2023-11-28 23:55:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:55:38,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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 46 [2023-11-28 23:55:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:38,302 INFO L225 Difference]: With dead ends: 492 [2023-11-28 23:55:38,302 INFO L226 Difference]: Without dead ends: 449 [2023-11-28 23:55:38,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:55:38,303 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 4 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:38,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 130 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:55:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-11-28 23:55:38,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 437. [2023-11-28 23:55:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.3211009174311927) internal successors, (576), 436 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 576 transitions. [2023-11-28 23:55:38,338 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 576 transitions. Word has length 46 [2023-11-28 23:55:38,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:38,338 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 576 transitions. [2023-11-28 23:55:38,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2023-11-28 23:55:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 576 transitions. [2023-11-28 23:55:38,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-28 23:55:38,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:38,340 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2023-11-28 23:55:38,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 23:55:38,340 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:38,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash 224760404, now seen corresponding path program 1 times [2023-11-28 23:55:38,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:38,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553419206] [2023-11-28 23:55:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:38,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-28 23:55:38,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:38,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553419206] [2023-11-28 23:55:38,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553419206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:38,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90486562] [2023-11-28 23:55:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:38,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:38,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:38,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:38,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:55:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 23:55:38,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:55:38,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:38,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90486562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:38,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:55:38,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-11-28 23:55:38,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343677446] [2023-11-28 23:55:38,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:38,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:55:38,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:38,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:55:38,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:55:38,658 INFO L87 Difference]: Start difference. First operand 437 states and 576 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:38,774 INFO L93 Difference]: Finished difference Result 976 states and 1299 transitions. [2023-11-28 23:55:38,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:55:38,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 46 [2023-11-28 23:55:38,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:38,777 INFO L225 Difference]: With dead ends: 976 [2023-11-28 23:55:38,777 INFO L226 Difference]: Without dead ends: 479 [2023-11-28 23:55:38,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:55:38,779 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 63 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:38,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 66 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:55:38,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-28 23:55:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 389. [2023-11-28 23:55:38,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.2860824742268042) internal successors, (499), 388 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 499 transitions. [2023-11-28 23:55:38,805 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 499 transitions. Word has length 46 [2023-11-28 23:55:38,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:38,805 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 499 transitions. [2023-11-28 23:55:38,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 499 transitions. [2023-11-28 23:55:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-28 23:55:38,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:38,807 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:38,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:55:39,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:39,012 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:39,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:39,013 INFO L85 PathProgramCache]: Analyzing trace with hash 315293426, now seen corresponding path program 1 times [2023-11-28 23:55:39,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:39,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572178130] [2023-11-28 23:55:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:39,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-28 23:55:39,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:39,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572178130] [2023-11-28 23:55:39,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572178130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:39,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:39,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:55:39,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069108363] [2023-11-28 23:55:39,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:39,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:55:39,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:39,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:55:39,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:55:39,259 INFO L87 Difference]: Start difference. First operand 389 states and 499 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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) [2023-11-28 23:55:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:39,410 INFO L93 Difference]: Finished difference Result 1193 states and 1522 transitions. [2023-11-28 23:55:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:39,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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 67 [2023-11-28 23:55:39,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:39,415 INFO L225 Difference]: With dead ends: 1193 [2023-11-28 23:55:39,415 INFO L226 Difference]: Without dead ends: 830 [2023-11-28 23:55:39,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:55:39,417 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 160 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:39,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 155 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:55:39,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-28 23:55:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 587. [2023-11-28 23:55:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 586 states have (on average 1.2781569965870307) internal successors, (749), 586 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 749 transitions. [2023-11-28 23:55:39,456 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 749 transitions. Word has length 67 [2023-11-28 23:55:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:39,457 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 749 transitions. [2023-11-28 23:55:39,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 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) [2023-11-28 23:55:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 749 transitions. [2023-11-28 23:55:39,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-28 23:55:39,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:39,458 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:39,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 23:55:39,459 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:39,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:39,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1310614836, now seen corresponding path program 1 times [2023-11-28 23:55:39,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:39,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035415785] [2023-11-28 23:55:39,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:39,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 18 proven. 60 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:55:39,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:39,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035415785] [2023-11-28 23:55:39,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035415785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:39,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396518069] [2023-11-28 23:55:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:39,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:39,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:39,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:39,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:55:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:40,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-28 23:55:40,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-28 23:55:40,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-28 23:55:40,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396518069] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:40,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:40,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 20 [2023-11-28 23:55:40,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841934470] [2023-11-28 23:55:40,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:40,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-28 23:55:40,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-28 23:55:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-11-28 23:55:40,617 INFO L87 Difference]: Start difference. First operand 587 states and 749 transitions. Second operand has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 20 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:44,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:44,599 INFO L93 Difference]: Finished difference Result 2268 states and 2894 transitions. [2023-11-28 23:55:44,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-11-28 23:55:44,600 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 20 states have internal predecessors, (167), 0 states have call successors, (0), 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 67 [2023-11-28 23:55:44,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:44,611 INFO L225 Difference]: With dead ends: 2268 [2023-11-28 23:55:44,611 INFO L226 Difference]: Without dead ends: 2260 [2023-11-28 23:55:44,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2477 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1883, Invalid=7047, Unknown=0, NotChecked=0, Total=8930 [2023-11-28 23:55:44,617 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 818 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:44,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 1929 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-28 23:55:44,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2023-11-28 23:55:44,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 981. [2023-11-28 23:55:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.3081632653061224) internal successors, (1282), 980 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1282 transitions. [2023-11-28 23:55:44,699 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1282 transitions. Word has length 67 [2023-11-28 23:55:44,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:44,700 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1282 transitions. [2023-11-28 23:55:44,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 20 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1282 transitions. [2023-11-28 23:55:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-28 23:55:44,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:44,702 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:44,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:55:44,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:44,903 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:44,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:44,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1049730223, now seen corresponding path program 1 times [2023-11-28 23:55:44,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:44,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977643192] [2023-11-28 23:55:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:44,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-28 23:55:45,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:45,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977643192] [2023-11-28 23:55:45,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977643192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:45,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:45,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:55:45,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819669483] [2023-11-28 23:55:45,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:45,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:55:45,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:45,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:55:45,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:55:45,154 INFO L87 Difference]: Start difference. First operand 981 states and 1282 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2023-11-28 23:55:45,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:45,645 INFO L93 Difference]: Finished difference Result 2278 states and 3001 transitions. [2023-11-28 23:55:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:55:45,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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 69 [2023-11-28 23:55:45,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:45,654 INFO L225 Difference]: With dead ends: 2278 [2023-11-28 23:55:45,655 INFO L226 Difference]: Without dead ends: 1673 [2023-11-28 23:55:45,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:55:45,657 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 307 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:45,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 554 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:55:45,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2023-11-28 23:55:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 977. [2023-11-28 23:55:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 1.3094262295081966) internal successors, (1278), 976 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1278 transitions. [2023-11-28 23:55:45,734 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1278 transitions. Word has length 69 [2023-11-28 23:55:45,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:45,734 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1278 transitions. [2023-11-28 23:55:45,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 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) [2023-11-28 23:55:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1278 transitions. [2023-11-28 23:55:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-28 23:55:45,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:45,736 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:45,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 23:55:45,737 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:45,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:45,737 INFO L85 PathProgramCache]: Analyzing trace with hash -667674692, now seen corresponding path program 1 times [2023-11-28 23:55:45,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:45,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802629332] [2023-11-28 23:55:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:45,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 48 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-28 23:55:45,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802629332] [2023-11-28 23:55:45,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802629332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:45,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558196925] [2023-11-28 23:55:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:45,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:45,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:45,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:45,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:55:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:46,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-28 23:55:46,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-28 23:55:46,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:46,619 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 52 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-28 23:55:46,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558196925] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:46,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:46,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2023-11-28 23:55:46,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384407811] [2023-11-28 23:55:46,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:46,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 23:55:46,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:46,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 23:55:46,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:55:46,622 INFO L87 Difference]: Start difference. First operand 977 states and 1278 transitions. Second operand has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 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) [2023-11-28 23:55:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:47,633 INFO L93 Difference]: Finished difference Result 3069 states and 4034 transitions. [2023-11-28 23:55:47,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 23:55:47,633 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 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) Word has length 71 [2023-11-28 23:55:47,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:47,642 INFO L225 Difference]: With dead ends: 3069 [2023-11-28 23:55:47,642 INFO L226 Difference]: Without dead ends: 2061 [2023-11-28 23:55:47,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2023-11-28 23:55:47,644 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 716 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:47,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 556 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 23:55:47,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2023-11-28 23:55:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1687. [2023-11-28 23:55:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1686 states have (on average 1.2965599051008303) internal successors, (2186), 1686 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2186 transitions. [2023-11-28 23:55:47,767 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2186 transitions. Word has length 71 [2023-11-28 23:55:47,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:47,767 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 2186 transitions. [2023-11-28 23:55:47,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 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) [2023-11-28 23:55:47,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2186 transitions. [2023-11-28 23:55:47,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-28 23:55:47,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:47,770 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:47,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:55:47,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:47,971 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:47,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash 64292734, now seen corresponding path program 1 times [2023-11-28 23:55:47,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:47,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976382558] [2023-11-28 23:55:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:47,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:48,250 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-28 23:55:48,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:48,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976382558] [2023-11-28 23:55:48,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976382558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:48,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296288191] [2023-11-28 23:55:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:48,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:48,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:48,255 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:48,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:55:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:48,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-28 23:55:48,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:55:48,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-28 23:55:48,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296288191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:48,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:48,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-28 23:55:48,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125704283] [2023-11-28 23:55:48,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:48,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:55:48,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:55:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:55:48,811 INFO L87 Difference]: Start difference. First operand 1687 states and 2186 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:49,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:55:49,275 INFO L93 Difference]: Finished difference Result 3460 states and 4436 transitions. [2023-11-28 23:55:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:55:49,275 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 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 71 [2023-11-28 23:55:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:55:49,282 INFO L225 Difference]: With dead ends: 3460 [2023-11-28 23:55:49,282 INFO L226 Difference]: Without dead ends: 1845 [2023-11-28 23:55:49,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-11-28 23:55:49,284 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 232 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:55:49,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 554 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:55:49,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2023-11-28 23:55:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1377. [2023-11-28 23:55:49,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 1.273982558139535) internal successors, (1753), 1376 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1753 transitions. [2023-11-28 23:55:49,374 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1753 transitions. Word has length 71 [2023-11-28 23:55:49,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:49,374 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 1753 transitions. [2023-11-28 23:55:49,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1753 transitions. [2023-11-28 23:55:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-28 23:55:49,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:49,376 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-28 23:55:49,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-28 23:55:49,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:49,577 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:49,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:49,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1987520768, now seen corresponding path program 2 times [2023-11-28 23:55:49,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:49,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124259845] [2023-11-28 23:55:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:49,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 56 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 23:55:50,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:50,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124259845] [2023-11-28 23:55:50,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124259845] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:50,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94427191] [2023-11-28 23:55:50,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:55:50,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:50,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:50,056 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:50,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:55:50,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:55:50,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:55:50,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-28 23:55:50,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 27 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-28 23:55:51,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-28 23:55:52,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94427191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:52,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:52,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 9] total 27 [2023-11-28 23:55:52,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433733032] [2023-11-28 23:55:52,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:52,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-28 23:55:52,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:52,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-28 23:55:52,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2023-11-28 23:55:52,149 INFO L87 Difference]: Start difference. First operand 1377 states and 1753 transitions. Second operand has 27 states, 27 states have (on average 7.037037037037037) internal successors, (190), 27 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:06,237 INFO L93 Difference]: Finished difference Result 9708 states and 11992 transitions. [2023-11-28 23:56:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-11-28 23:56:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.037037037037037) internal successors, (190), 27 states have internal predecessors, (190), 0 states have call successors, (0), 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 71 [2023-11-28 23:56:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:06,269 INFO L225 Difference]: With dead ends: 9708 [2023-11-28 23:56:06,269 INFO L226 Difference]: Without dead ends: 9702 [2023-11-28 23:56:06,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6828 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=3353, Invalid=17239, Unknown=0, NotChecked=0, Total=20592 [2023-11-28 23:56:06,275 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1946 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:06,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 2464 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-28 23:56:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9702 states. [2023-11-28 23:56:06,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9702 to 2897. [2023-11-28 23:56:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2896 states have (on average 1.298342541436464) internal successors, (3760), 2896 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 3760 transitions. [2023-11-28 23:56:06,652 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 3760 transitions. Word has length 71 [2023-11-28 23:56:06,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:06,653 INFO L495 AbstractCegarLoop]: Abstraction has 2897 states and 3760 transitions. [2023-11-28 23:56:06,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.037037037037037) internal successors, (190), 27 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:06,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 3760 transitions. [2023-11-28 23:56:06,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-28 23:56:06,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:06,656 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-28 23:56:06,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:56:06,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:06,857 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:06,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1484894367, now seen corresponding path program 1 times [2023-11-28 23:56:06,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:06,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345406353] [2023-11-28 23:56:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:06,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 69 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-28 23:56:07,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:07,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345406353] [2023-11-28 23:56:07,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345406353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:07,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641823820] [2023-11-28 23:56:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:07,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:07,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:07,578 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:07,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:56:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:08,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 23:56:08,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 53 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-28 23:56:08,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-28 23:56:08,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641823820] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:08,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:08,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 21 [2023-11-28 23:56:08,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948789975] [2023-11-28 23:56:08,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:08,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-28 23:56:08,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-28 23:56:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2023-11-28 23:56:08,693 INFO L87 Difference]: Start difference. First operand 2897 states and 3760 transitions. Second operand has 22 states, 22 states have (on average 7.0) internal successors, (154), 21 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:10,197 INFO L93 Difference]: Finished difference Result 7031 states and 9070 transitions. [2023-11-28 23:56:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-28 23:56:10,198 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.0) internal successors, (154), 21 states have internal predecessors, (154), 0 states have call successors, (0), 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 72 [2023-11-28 23:56:10,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:10,217 INFO L225 Difference]: With dead ends: 7031 [2023-11-28 23:56:10,218 INFO L226 Difference]: Without dead ends: 4502 [2023-11-28 23:56:10,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=345, Invalid=1137, Unknown=0, NotChecked=0, Total=1482 [2023-11-28 23:56:10,222 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 478 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:10,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1282 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 23:56:10,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2023-11-28 23:56:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 3049. [2023-11-28 23:56:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3049 states, 3048 states have (on average 1.3162729658792651) internal successors, (4012), 3048 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 4012 transitions. [2023-11-28 23:56:10,502 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 4012 transitions. Word has length 72 [2023-11-28 23:56:10,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:10,503 INFO L495 AbstractCegarLoop]: Abstraction has 3049 states and 4012 transitions. [2023-11-28 23:56:10,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.0) internal successors, (154), 21 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 4012 transitions. [2023-11-28 23:56:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-28 23:56:10,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:10,505 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:10,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:56:10,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:10,706 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:10,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1960049728, now seen corresponding path program 1 times [2023-11-28 23:56:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:10,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946108630] [2023-11-28 23:56:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:10,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 28 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:56:11,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:11,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946108630] [2023-11-28 23:56:11,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946108630] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:11,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439741228] [2023-11-28 23:56:11,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:11,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:11,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:11,431 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:11,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:56:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:11,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:56:11,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-28 23:56:11,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:11,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439741228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:11,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:56:11,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2023-11-28 23:56:11,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111340679] [2023-11-28 23:56:11,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:11,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:56:11,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:11,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:56:11,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:56:11,920 INFO L87 Difference]: Start difference. First operand 3049 states and 4012 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:12,199 INFO L93 Difference]: Finished difference Result 3068 states and 4036 transitions. [2023-11-28 23:56:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:56:12,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-11-28 23:56:12,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:12,210 INFO L225 Difference]: With dead ends: 3068 [2023-11-28 23:56:12,210 INFO L226 Difference]: Without dead ends: 3064 [2023-11-28 23:56:12,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:56:12,212 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 10 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:12,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 153 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:56:12,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2023-11-28 23:56:12,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3055. [2023-11-28 23:56:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3055 states, 3054 states have (on average 1.3159790438768828) internal successors, (4019), 3054 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 4019 transitions. [2023-11-28 23:56:12,456 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 4019 transitions. Word has length 72 [2023-11-28 23:56:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:12,457 INFO L495 AbstractCegarLoop]: Abstraction has 3055 states and 4019 transitions. [2023-11-28 23:56:12,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 4019 transitions. [2023-11-28 23:56:12,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-28 23:56:12,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:12,460 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:12,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-28 23:56:12,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:12,660 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:12,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:12,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1510466783, now seen corresponding path program 1 times [2023-11-28 23:56:12,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:12,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532696230] [2023-11-28 23:56:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:12,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:56:12,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:12,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532696230] [2023-11-28 23:56:12,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532696230] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:12,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25329840] [2023-11-28 23:56:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:12,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:12,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:12,890 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:12,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:56:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:13,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 23:56:13,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 42 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:56:13,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:56:13,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25329840] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:13,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:13,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-11-28 23:56:13,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051578979] [2023-11-28 23:56:13,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:13,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 23:56:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:13,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 23:56:13,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:56:13,476 INFO L87 Difference]: Start difference. First operand 3055 states and 4019 transitions. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:14,780 INFO L93 Difference]: Finished difference Result 7364 states and 9469 transitions. [2023-11-28 23:56:14,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:56:14,781 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 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 72 [2023-11-28 23:56:14,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:14,790 INFO L225 Difference]: With dead ends: 7364 [2023-11-28 23:56:14,790 INFO L226 Difference]: Without dead ends: 7360 [2023-11-28 23:56:14,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 131 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:56:14,792 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 627 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:14,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 531 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:56:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7360 states. [2023-11-28 23:56:15,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7360 to 4097. [2023-11-28 23:56:15,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4097 states, 4096 states have (on average 1.3671875) internal successors, (5600), 4096 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 5600 transitions. [2023-11-28 23:56:15,113 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 5600 transitions. Word has length 72 [2023-11-28 23:56:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:15,113 INFO L495 AbstractCegarLoop]: Abstraction has 4097 states and 5600 transitions. [2023-11-28 23:56:15,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 5600 transitions. [2023-11-28 23:56:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-28 23:56:15,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:15,115 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:15,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:56:15,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:15,315 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:15,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:15,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1510407201, now seen corresponding path program 1 times [2023-11-28 23:56:15,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:15,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079759323] [2023-11-28 23:56:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:15,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 1 proven. 60 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-28 23:56:15,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:15,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079759323] [2023-11-28 23:56:15,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079759323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:15,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761642196] [2023-11-28 23:56:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:15,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:15,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:15,649 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:15,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:56:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:15,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 23:56:15,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 18 proven. 60 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:56:16,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:56:16,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761642196] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:16,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:16,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-28 23:56:16,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503351724] [2023-11-28 23:56:16,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:16,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-28 23:56:16,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:16,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-28 23:56:16,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2023-11-28 23:56:16,434 INFO L87 Difference]: Start difference. First operand 4097 states and 5600 transitions. Second operand has 23 states, 23 states have (on average 8.304347826086957) internal successors, (191), 22 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:18,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:18,444 INFO L93 Difference]: Finished difference Result 7653 states and 10201 transitions. [2023-11-28 23:56:18,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-28 23:56:18,445 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.304347826086957) internal successors, (191), 22 states have internal predecessors, (191), 0 states have call successors, (0), 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 72 [2023-11-28 23:56:18,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:18,465 INFO L225 Difference]: With dead ends: 7653 [2023-11-28 23:56:18,465 INFO L226 Difference]: Without dead ends: 7635 [2023-11-28 23:56:18,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=609, Invalid=1841, Unknown=0, NotChecked=0, Total=2450 [2023-11-28 23:56:18,468 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 433 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:18,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1364 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 23:56:18,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7635 states. [2023-11-28 23:56:18,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7635 to 4227. [2023-11-28 23:56:18,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4227 states, 4226 states have (on average 1.369380028395646) internal successors, (5787), 4226 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 5787 transitions. [2023-11-28 23:56:18,827 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 5787 transitions. Word has length 72 [2023-11-28 23:56:18,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:18,827 INFO L495 AbstractCegarLoop]: Abstraction has 4227 states and 5787 transitions. [2023-11-28 23:56:18,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.304347826086957) internal successors, (191), 22 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:18,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 5787 transitions. [2023-11-28 23:56:18,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-28 23:56:18,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:18,829 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:18,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 23:56:19,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-28 23:56:19,030 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:19,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:19,030 INFO L85 PathProgramCache]: Analyzing trace with hash 633292127, now seen corresponding path program 1 times [2023-11-28 23:56:19,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:19,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035446314] [2023-11-28 23:56:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:19,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:56:19,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 23:56:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:56:19,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 23:56:19,164 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 23:56:19,165 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-28 23:56:19,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-28 23:56:19,170 INFO L445 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] [2023-11-28 23:56:19,174 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 23:56:19,223 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-28 23:56:19,225 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet2 could not be translated [2023-11-28 23:56:19,225 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-28 23:56:19,225 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated [2023-11-28 23:56:19,225 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet2 could not be translated [2023-11-28 23:56:19,226 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-28 23:56:19,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:56:19 BoogieIcfgContainer [2023-11-28 23:56:19,244 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 23:56:19,244 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 23:56:19,244 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 23:56:19,245 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 23:56:19,245 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:55:32" (3/4) ... [2023-11-28 23:56:19,247 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-28 23:56:19,248 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 23:56:19,249 INFO L158 Benchmark]: Toolchain (without parser) took 47281.82ms. Allocated memory was 138.4MB in the beginning and 469.8MB in the end (delta: 331.4MB). Free memory was 100.5MB in the beginning and 381.5MB in the end (delta: -281.1MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2023-11-28 23:56:19,249 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 111.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 23:56:19,250 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.56ms. Allocated memory is still 138.4MB. Free memory was 100.0MB in the beginning and 87.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-28 23:56:19,250 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.90ms. Allocated memory is still 138.4MB. Free memory was 87.0MB in the beginning and 84.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 23:56:19,251 INFO L158 Benchmark]: Boogie Preprocessor took 51.45ms. Allocated memory is still 138.4MB. Free memory was 84.1MB in the beginning and 81.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 23:56:19,251 INFO L158 Benchmark]: RCFGBuilder took 475.70ms. Allocated memory is still 138.4MB. Free memory was 81.1MB in the beginning and 59.7MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-28 23:56:19,251 INFO L158 Benchmark]: TraceAbstraction took 46416.33ms. Allocated memory was 138.4MB in the beginning and 469.8MB in the end (delta: 331.4MB). Free memory was 59.0MB in the beginning and 382.6MB in the end (delta: -323.6MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2023-11-28 23:56:19,252 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 469.8MB. Free memory was 382.6MB in the beginning and 381.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 23:56:19,253 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 111.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.56ms. Allocated memory is still 138.4MB. Free memory was 100.0MB in the beginning and 87.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.90ms. Allocated memory is still 138.4MB. Free memory was 87.0MB in the beginning and 84.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.45ms. Allocated memory is still 138.4MB. Free memory was 84.1MB in the beginning and 81.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 475.70ms. Allocated memory is still 138.4MB. Free memory was 81.1MB in the beginning and 59.7MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 46416.33ms. Allocated memory was 138.4MB in the beginning and 469.8MB in the end (delta: 331.4MB). Free memory was 59.0MB in the beginning and 382.6MB in the end (delta: -323.6MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 469.8MB. Free memory was 382.6MB in the beginning and 381.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet2 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet1 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet2 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 25]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 116. Possible FailurePath: [L124] unsigned int a, b, r; [L126] b = __VERIFIER_nondet_uint() [L128] a = 234770789 [L130] CALL, EXPR mp_add(a, b) [L42] unsigned char a0, a1, a2, a3; [L43] unsigned char b0, b1, b2, b3; [L44] unsigned char r0, r1, r2, r3; [L45] unsigned short carry; [L46] unsigned short partial_sum; [L47] unsigned int r; [L48] unsigned char i; [L49] unsigned char na, nb; [L50] a0 = a [L51] a1 = a >> 8 [L52] a2 = a >> 16U [L53] a3 = a >> 24U [L54] b0 = b [L55] b1 = b >> 8U [L56] b2 = b >> 16U [L57] b3 = b >> 24U [L58] na = (unsigned char)4 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, na=4] [L59] COND FALSE !(a3 == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, na=4] [L68] nb = (unsigned char)4 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, na=4, nb=4] [L69] COND TRUE b3 == (unsigned char)0 [L70] nb = nb - 1 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, na=4, nb=3] [L71] COND TRUE b2 == (unsigned char)0 [L72] nb = nb - 1 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, na=4, nb=2] [L73] COND TRUE b1 == (unsigned char)0 [L74] nb = nb - 1 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, na=4, nb=1] [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=0, na=4, nb=1] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=0, na=4, nb=1, partial_sum=0] [L83] COND TRUE i < na VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=0, na=4, nb=1, partial_sum=0] [L84] COND TRUE i == (unsigned char)0 [L84] partial_sum = partial_sum + a0 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=0, na=4, nb=1, partial_sum=101] [L85] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=0, na=4, nb=1, partial_sum=101] [L86] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=0, na=4, nb=1, partial_sum=101] [L87] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=0, na=4, nb=1, partial_sum=101] [L89] COND TRUE i < nb VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=0, na=4, nb=1, partial_sum=101] [L90] COND TRUE i == (unsigned char)0 [L90] partial_sum = partial_sum + b0 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=0, na=4, nb=1, partial_sum=256] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=0, na=4, nb=1, partial_sum=256] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=0, na=4, nb=1, partial_sum=256] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=0, na=4, nb=1, partial_sum=256] [L95] COND TRUE partial_sum > ((unsigned char)255) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=1, i=0, na=4, nb=1, partial_sum=0] [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=1, i=0, na=4, nb=1, partial_sum=0, r0=0] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=1, i=0, na=4, nb=1, partial_sum=0, r0=0] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=1, i=0, na=4, nb=1, partial_sum=0, r0=0] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=1, i=0, na=4, nb=1, partial_sum=0, r0=0] [L104] i = i + (unsigned char)1 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=1, i=1, na=4, nb=1, partial_sum=0, r0=0] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=1, na=4, nb=1, partial_sum=1, r0=0] [L83] COND TRUE i < na VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=1, na=4, nb=1, partial_sum=1, r0=0] [L84] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=1, na=4, nb=1, partial_sum=1, r0=0] [L85] COND TRUE i == (unsigned char)1 [L85] partial_sum = partial_sum + a1 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0] [L86] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0] [L87] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0] [L89] COND FALSE !(i < nb) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0] [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0, r1=82] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0, r1=82] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=0, r1=82] [L104] i = i + (unsigned char)1 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=82, r0=0, r1=82] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=0, r1=82] [L83] COND TRUE i < na VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=0, r1=82] [L84] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=0, r1=82] [L85] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=0, r1=82] [L86] COND TRUE i == (unsigned char)2 [L86] partial_sum = partial_sum + a2 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82] [L87] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82] [L89] COND FALSE !(i < nb) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82] [L101] COND TRUE i == (unsigned char)2 [L101] r2 = (unsigned char)partial_sum VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82, r2=254] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=0, r1=82, r2=254] [L104] i = i + (unsigned char)1 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=254, r0=0, r1=82, r2=254] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254] [L83] COND TRUE i < na VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254] [L84] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254] [L85] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254] [L86] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=0, r1=82, r2=254] [L87] COND TRUE i == (unsigned char)3 [L87] partial_sum = partial_sum + a3 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254] [L89] COND FALSE !(i < nb) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254] [L102] COND TRUE i == (unsigned char)3 [L102] r3 = (unsigned char)partial_sum VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L104] i = i + (unsigned char)1 VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=4, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=4, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L107] COND FALSE !(i < (unsigned char)4) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=4, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=4, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=4, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) VAL [\old(a)=234770789, \old(b)=155, a0=234770789, a1=917073, a2=3582, a3=13, a=234770789, b0=-4294967141, b1=0, b2=0, b3=0, b=155, carry=0, i=4, na=4, nb=1, partial_sum=13, r0=0, r1=82, r2=254, r3=13] [L116] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L118] return r; [L130] RET, EXPR mp_add(a, b) [L130] r = mp_add(a, b) [L132] CALL __VERIFIER_assert(r == a + b) [L24] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L25] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.3s, OverallIterations: 24, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 28.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6899 SdHoareTripleChecker+Valid, 8.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6899 mSDsluCounter, 12103 SdHoareTripleChecker+Invalid, 7.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9726 mSDsCounter, 393 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8677 IncrementalHoareTripleChecker+Invalid, 9070 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 393 mSolverCounterUnsat, 2377 mSDtfsCounter, 8677 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1688 GetRequests, 1215 SyntacticMatches, 14 SemanticMatches, 459 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10456 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4227occurred in iteration=23, InterpolantAutomatonStates: 365, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 19478 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 1889 NumberOfCodeBlocks, 1889 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 2270 ConstructedInterpolants, 11 QuantifiedInterpolants, 15576 SizeOfPredicates, 59 NumberOfNonLiveVariables, 2069 ConjunctsInSsa, 184 ConjunctsInUnsatCore, 42 InterpolantComputations, 16 PerfectInterpolantSequences, 1531/2353 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 [2023-11-28 23:56:19,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:56:21,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:56:21,260 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-28 23:56:21,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:56:21,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:56:21,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:56:21,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:56:21,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:56:21,299 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:56:21,299 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:56:21,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:56:21,300 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:56:21,301 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:56:21,302 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:56:21,303 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:56:21,303 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:56:21,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:56:21,305 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:56:21,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:56:21,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:56:21,307 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:56:21,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:56:21,308 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:56:21,308 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-28 23:56:21,309 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-28 23:56:21,309 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-28 23:56:21,310 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:56:21,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:56:21,310 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:56:21,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:56:21,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:56:21,312 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:56:21,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:56:21,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:56:21,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:56:21,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:56:21,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:56:21,315 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-28 23:56:21,315 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-28 23:56:21,316 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:56:21,316 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:56:21,317 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:56:21,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:56:21,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:56:21,318 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-28 23:56:21,318 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 [2023-11-28 23:56:21,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:56:21,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:56:21,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:56:21,627 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:56:21,627 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:56:21,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/bitvector/byte_add_1-1.i [2023-11-28 23:56:24,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:56:24,658 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:56:24,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/sv-benchmarks/c/bitvector/byte_add_1-1.i [2023-11-28 23:56:24,669 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/data/c7a109262/d5bcd20811994e30be888ce105b6238d/FLAG052c75d3f [2023-11-28 23:56:24,686 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/data/c7a109262/d5bcd20811994e30be888ce105b6238d [2023-11-28 23:56:24,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:56:24,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:56:24,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:56:24,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:56:24,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:56:24,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:24,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b718acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24, skipping insertion in model container [2023-11-28 23:56:24,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:24,729 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:56:24,889 WARN L240 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_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2023-11-28 23:56:24,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:56:24,942 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:56:24,955 WARN L240 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_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2023-11-28 23:56:24,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:56:24,993 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:56:24,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24 WrapperNode [2023-11-28 23:56:24,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:56:24,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:56:24,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:56:24,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:56:25,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:25,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:25,047 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 123 [2023-11-28 23:56:25,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:56:25,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:56:25,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:56:25,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:56:25,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:25,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:25,063 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:25,076 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-28 23:56:25,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:25,077 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:25,083 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:25,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:25,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:25,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:25,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:56:25,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:56:25,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:56:25,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:56:25,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (1/1) ... [2023-11-28 23:56:25,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:56:25,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:25,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:56:25,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:56:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:56:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-28 23:56:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:56:25,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:56:25,262 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:56:25,265 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:56:25,507 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:56:25,544 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:56:25,544 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-28 23:56:25,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:56:25 BoogieIcfgContainer [2023-11-28 23:56:25,545 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:56:25,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:56:25,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:56:25,551 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:56:25,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:56:24" (1/3) ... [2023-11-28 23:56:25,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc7bd1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:56:25, skipping insertion in model container [2023-11-28 23:56:25,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:24" (2/3) ... [2023-11-28 23:56:25,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc7bd1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:56:25, skipping insertion in model container [2023-11-28 23:56:25,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:56:25" (3/3) ... [2023-11-28 23:56:25,555 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2023-11-28 23:56:25,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:56:25,575 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 23:56:25,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:56:25,632 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ecd23a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:56:25,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 23:56:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 37 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:25,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-28 23:56:25,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:25,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:25,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:25,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:25,651 INFO L85 PathProgramCache]: Analyzing trace with hash 459643034, now seen corresponding path program 1 times [2023-11-28 23:56:25,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:25,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852256276] [2023-11-28 23:56:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:25,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:25,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:25,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:25,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-28 23:56:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:25,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 23:56:25,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:25,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:25,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:25,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852256276] [2023-11-28 23:56:25,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852256276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:25,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:25,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:56:25,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931340876] [2023-11-28 23:56:25,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:25,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 23:56:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:25,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 23:56:25,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:56:25,805 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 37 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:25,834 INFO L93 Difference]: Finished difference Result 50 states and 85 transitions. [2023-11-28 23:56:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 23:56:25,837 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-28 23:56:25,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:25,845 INFO L225 Difference]: With dead ends: 50 [2023-11-28 23:56:25,846 INFO L226 Difference]: Without dead ends: 36 [2023-11-28 23:56:25,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:56:25,852 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:25,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:56:25,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-28 23:56:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-28 23:56:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 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) [2023-11-28 23:56:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 62 transitions. [2023-11-28 23:56:25,888 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 62 transitions. Word has length 10 [2023-11-28 23:56:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:25,888 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 62 transitions. [2023-11-28 23:56:25,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:25,889 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 62 transitions. [2023-11-28 23:56:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-28 23:56:25,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:25,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:25,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:56:26,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:26,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:26,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:26,093 INFO L85 PathProgramCache]: Analyzing trace with hash 371044600, now seen corresponding path program 1 times [2023-11-28 23:56:26,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:26,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824112515] [2023-11-28 23:56:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:26,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:26,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:26,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:26,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-28 23:56:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:26,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:56:26,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:26,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:26,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:26,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824112515] [2023-11-28 23:56:26,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824112515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:26,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:26,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:56:26,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187232674] [2023-11-28 23:56:26,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:26,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:56:26,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:26,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:56:26,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:56:26,185 INFO L87 Difference]: Start difference. First operand 36 states and 62 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:26,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:26,357 INFO L93 Difference]: Finished difference Result 109 states and 195 transitions. [2023-11-28 23:56:26,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:56:26,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-28 23:56:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:26,360 INFO L225 Difference]: With dead ends: 109 [2023-11-28 23:56:26,360 INFO L226 Difference]: Without dead ends: 82 [2023-11-28 23:56:26,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:56:26,374 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 88 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:26,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 122 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:56:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-28 23:56:26,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2023-11-28 23:56:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.641025641025641) internal successors, (128), 78 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) [2023-11-28 23:56:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 128 transitions. [2023-11-28 23:56:26,388 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 128 transitions. Word has length 10 [2023-11-28 23:56:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:26,389 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 128 transitions. [2023-11-28 23:56:26,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:26,389 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 128 transitions. [2023-11-28 23:56:26,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-28 23:56:26,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:26,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:26,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-28 23:56:26,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:26,594 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:26,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:26,594 INFO L85 PathProgramCache]: Analyzing trace with hash -450690481, now seen corresponding path program 1 times [2023-11-28 23:56:26,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:26,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739011235] [2023-11-28 23:56:26,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:26,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:26,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:26,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:26,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-28 23:56:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:26,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:56:26,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:26,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:26,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739011235] [2023-11-28 23:56:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739011235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:26,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:26,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:56:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142478283] [2023-11-28 23:56:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:26,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:56:26,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:56:26,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:56:26,718 INFO L87 Difference]: Start difference. First operand 79 states and 128 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2023-11-28 23:56:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:26,899 INFO L93 Difference]: Finished difference Result 153 states and 262 transitions. [2023-11-28 23:56:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:56:26,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 [2023-11-28 23:56:26,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:26,901 INFO L225 Difference]: With dead ends: 153 [2023-11-28 23:56:26,901 INFO L226 Difference]: Without dead ends: 126 [2023-11-28 23:56:26,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:56:26,903 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 134 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:26,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 254 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:56:26,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-28 23:56:26,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 79. [2023-11-28 23:56:26,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.641025641025641) internal successors, (128), 78 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) [2023-11-28 23:56:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 128 transitions. [2023-11-28 23:56:26,918 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 128 transitions. Word has length 11 [2023-11-28 23:56:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:26,918 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 128 transitions. [2023-11-28 23:56:26,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2023-11-28 23:56:26,919 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 128 transitions. [2023-11-28 23:56:26,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-28 23:56:26,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:26,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:26,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-28 23:56:27,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:27,121 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:27,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash -950257841, now seen corresponding path program 1 times [2023-11-28 23:56:27,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:27,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666475732] [2023-11-28 23:56:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:27,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:27,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:27,125 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:27,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-28 23:56:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:27,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:56:27,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:27,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:27,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:27,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666475732] [2023-11-28 23:56:27,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666475732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:27,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:27,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:56:27,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731851042] [2023-11-28 23:56:27,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:27,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:56:27,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:56:27,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:56:27,220 INFO L87 Difference]: Start difference. First operand 79 states and 128 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:27,460 INFO L93 Difference]: Finished difference Result 197 states and 329 transitions. [2023-11-28 23:56:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:56:27,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-28 23:56:27,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:27,463 INFO L225 Difference]: With dead ends: 197 [2023-11-28 23:56:27,463 INFO L226 Difference]: Without dead ends: 170 [2023-11-28 23:56:27,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:56:27,465 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 180 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:27,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 479 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:56:27,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-28 23:56:27,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 79. [2023-11-28 23:56:27,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.641025641025641) internal successors, (128), 78 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) [2023-11-28 23:56:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 128 transitions. [2023-11-28 23:56:27,480 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 128 transitions. Word has length 12 [2023-11-28 23:56:27,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:27,480 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 128 transitions. [2023-11-28 23:56:27,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 128 transitions. [2023-11-28 23:56:27,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-28 23:56:27,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:27,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:27,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-28 23:56:27,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:27,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:27,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:27,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1569702093, now seen corresponding path program 1 times [2023-11-28 23:56:27,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:27,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970533556] [2023-11-28 23:56:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:27,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:27,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:27,685 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:27,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-28 23:56:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:27,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:56:27,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:27,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:27,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:27,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970533556] [2023-11-28 23:56:27,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970533556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:27,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:27,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:56:27,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111193721] [2023-11-28 23:56:27,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:27,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:56:27,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:27,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:56:27,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:56:27,773 INFO L87 Difference]: Start difference. First operand 79 states and 128 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:28,011 INFO L93 Difference]: Finished difference Result 212 states and 342 transitions. [2023-11-28 23:56:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:56:28,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-28 23:56:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:28,013 INFO L225 Difference]: With dead ends: 212 [2023-11-28 23:56:28,013 INFO L226 Difference]: Without dead ends: 185 [2023-11-28 23:56:28,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:56:28,014 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 218 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:28,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 619 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:56:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-28 23:56:28,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 85. [2023-11-28 23:56:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.5119047619047619) internal successors, (127), 84 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 127 transitions. [2023-11-28 23:56:28,022 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 127 transitions. Word has length 12 [2023-11-28 23:56:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:28,022 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 127 transitions. [2023-11-28 23:56:28,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:28,023 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 127 transitions. [2023-11-28 23:56:28,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-28 23:56:28,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:28,024 INFO L195 NwaCegarLoop]: 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] [2023-11-28 23:56:28,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-28 23:56:28,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:28,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:28,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:28,229 INFO L85 PathProgramCache]: Analyzing trace with hash -171126915, now seen corresponding path program 1 times [2023-11-28 23:56:28,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:28,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386820412] [2023-11-28 23:56:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:28,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:28,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:28,231 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:28,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-28 23:56:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:28,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:56:28,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:28,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:28,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:28,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386820412] [2023-11-28 23:56:28,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386820412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:28,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:28,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:56:28,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467803282] [2023-11-28 23:56:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:28,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:56:28,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:56:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:56:28,308 INFO L87 Difference]: Start difference. First operand 85 states and 127 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:28,411 INFO L93 Difference]: Finished difference Result 236 states and 352 transitions. [2023-11-28 23:56:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:56:28,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-28 23:56:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:28,412 INFO L225 Difference]: With dead ends: 236 [2023-11-28 23:56:28,412 INFO L226 Difference]: Without dead ends: 167 [2023-11-28 23:56:28,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:56:28,414 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 89 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:28,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 137 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:56:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-28 23:56:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 95. [2023-11-28 23:56:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 94 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 140 transitions. [2023-11-28 23:56:28,427 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 140 transitions. Word has length 23 [2023-11-28 23:56:28,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:28,427 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 140 transitions. [2023-11-28 23:56:28,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 140 transitions. [2023-11-28 23:56:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-28 23:56:28,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:28,430 INFO L195 NwaCegarLoop]: 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] [2023-11-28 23:56:28,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-28 23:56:28,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:28,637 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:28,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1205485431, now seen corresponding path program 1 times [2023-11-28 23:56:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:28,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992453258] [2023-11-28 23:56:28,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:28,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:28,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:28,639 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:28,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-28 23:56:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:28,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:56:28,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:56:28,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:28,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992453258] [2023-11-28 23:56:28,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992453258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:28,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:28,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:56:28,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414224575] [2023-11-28 23:56:28,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:28,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:56:28,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:28,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:56:28,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:56:28,687 INFO L87 Difference]: Start difference. First operand 95 states and 140 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 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) [2023-11-28 23:56:28,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:28,702 INFO L93 Difference]: Finished difference Result 166 states and 245 transitions. [2023-11-28 23:56:28,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:56:28,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 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 [2023-11-28 23:56:28,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:28,703 INFO L225 Difference]: With dead ends: 166 [2023-11-28 23:56:28,703 INFO L226 Difference]: Without dead ends: 83 [2023-11-28 23:56:28,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:56:28,705 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 53 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:28,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 55 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:56:28,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-28 23:56:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-28 23:56:28,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 82 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) [2023-11-28 23:56:28,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2023-11-28 23:56:28,713 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 24 [2023-11-28 23:56:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:28,714 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2023-11-28 23:56:28,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 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) [2023-11-28 23:56:28,714 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2023-11-28 23:56:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-28 23:56:28,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:28,716 INFO L195 NwaCegarLoop]: 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] [2023-11-28 23:56:28,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-28 23:56:28,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:28,919 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:28,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:28,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1173091825, now seen corresponding path program 1 times [2023-11-28 23:56:28,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:28,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251297124] [2023-11-28 23:56:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:28,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:28,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:28,925 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:28,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-28 23:56:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:28,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:56:28,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:29,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:29,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:29,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251297124] [2023-11-28 23:56:29,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251297124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:29,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:29,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:56:29,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885229939] [2023-11-28 23:56:29,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:29,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:56:29,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:29,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:56:29,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:56:29,051 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:29,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:29,208 INFO L93 Difference]: Finished difference Result 195 states and 296 transitions. [2023-11-28 23:56:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:56:29,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-28 23:56:29,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:29,209 INFO L225 Difference]: With dead ends: 195 [2023-11-28 23:56:29,209 INFO L226 Difference]: Without dead ends: 152 [2023-11-28 23:56:29,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:56:29,211 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 88 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:29,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 100 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:56:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-28 23:56:29,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 149. [2023-11-28 23:56:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.4189189189189189) internal successors, (210), 148 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) [2023-11-28 23:56:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 210 transitions. [2023-11-28 23:56:29,223 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 210 transitions. Word has length 27 [2023-11-28 23:56:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:29,224 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 210 transitions. [2023-11-28 23:56:29,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:29,224 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 210 transitions. [2023-11-28 23:56:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-28 23:56:29,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:29,226 INFO L195 NwaCegarLoop]: 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] [2023-11-28 23:56:29,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-28 23:56:29,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:29,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:29,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:29,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1213817478, now seen corresponding path program 1 times [2023-11-28 23:56:29,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:29,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104272715] [2023-11-28 23:56:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:29,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:29,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:29,431 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:29,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-28 23:56:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:29,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:56:29,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:29,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:29,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:29,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104272715] [2023-11-28 23:56:29,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104272715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:29,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:29,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:56:29,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134744595] [2023-11-28 23:56:29,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:29,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:56:29,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:56:29,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:56:29,556 INFO L87 Difference]: Start difference. First operand 149 states and 210 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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) [2023-11-28 23:56:29,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:29,743 INFO L93 Difference]: Finished difference Result 262 states and 387 transitions. [2023-11-28 23:56:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:56:29,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 [2023-11-28 23:56:29,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:29,745 INFO L225 Difference]: With dead ends: 262 [2023-11-28 23:56:29,745 INFO L226 Difference]: Without dead ends: 219 [2023-11-28 23:56:29,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:56:29,747 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 134 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:29,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 201 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:56:29,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-28 23:56:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 149. [2023-11-28 23:56:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.4189189189189189) internal successors, (210), 148 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) [2023-11-28 23:56:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 210 transitions. [2023-11-28 23:56:29,755 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 210 transitions. Word has length 28 [2023-11-28 23:56:29,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:29,756 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 210 transitions. [2023-11-28 23:56:29,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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) [2023-11-28 23:56:29,756 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 210 transitions. [2023-11-28 23:56:29,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-28 23:56:29,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:29,757 INFO L195 NwaCegarLoop]: 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] [2023-11-28 23:56:29,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-28 23:56:29,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:29,960 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:29,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:29,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1570895750, now seen corresponding path program 1 times [2023-11-28 23:56:29,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:29,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261814463] [2023-11-28 23:56:29,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:29,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:29,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:29,962 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:29,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-28 23:56:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:29,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:56:30,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:30,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:30,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:30,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261814463] [2023-11-28 23:56:30,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261814463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:30,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:30,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:56:30,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511550115] [2023-11-28 23:56:30,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:30,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:56:30,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:56:30,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:56:30,093 INFO L87 Difference]: Start difference. First operand 149 states and 210 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) [2023-11-28 23:56:30,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:30,477 INFO L93 Difference]: Finished difference Result 295 states and 427 transitions. [2023-11-28 23:56:30,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:56:30,477 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 [2023-11-28 23:56:30,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:30,479 INFO L225 Difference]: With dead ends: 295 [2023-11-28 23:56:30,479 INFO L226 Difference]: Without dead ends: 252 [2023-11-28 23:56:30,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:56:30,480 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 158 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:30,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 416 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:56:30,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-28 23:56:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 115. [2023-11-28 23:56:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.394736842105263) internal successors, (159), 114 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 159 transitions. [2023-11-28 23:56:30,489 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 159 transitions. Word has length 29 [2023-11-28 23:56:30,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:30,490 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 159 transitions. [2023-11-28 23:56:30,490 INFO L496 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) [2023-11-28 23:56:30,490 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 159 transitions. [2023-11-28 23:56:30,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-28 23:56:30,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:30,491 INFO L195 NwaCegarLoop]: 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] [2023-11-28 23:56:30,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-28 23:56:30,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:30,694 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:30,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:30,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1436882244, now seen corresponding path program 1 times [2023-11-28 23:56:30,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:30,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532647573] [2023-11-28 23:56:30,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:30,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:30,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:30,696 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:30,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-28 23:56:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:30,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:56:30,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:30,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:30,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:30,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532647573] [2023-11-28 23:56:30,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532647573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:30,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:30,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:56:30,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519466395] [2023-11-28 23:56:30,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:30,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:56:30,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:30,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:56:30,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:56:30,802 INFO L87 Difference]: Start difference. First operand 115 states and 159 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 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) [2023-11-28 23:56:30,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:30,938 INFO L93 Difference]: Finished difference Result 241 states and 343 transitions. [2023-11-28 23:56:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:56:30,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 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 [2023-11-28 23:56:30,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:30,939 INFO L225 Difference]: With dead ends: 241 [2023-11-28 23:56:30,940 INFO L226 Difference]: Without dead ends: 139 [2023-11-28 23:56:30,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:56:30,941 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 91 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:30,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 50 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:56:30,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-28 23:56:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2023-11-28 23:56:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.3389830508474576) internal successors, (158), 118 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 158 transitions. [2023-11-28 23:56:30,950 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 158 transitions. Word has length 29 [2023-11-28 23:56:30,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:30,951 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 158 transitions. [2023-11-28 23:56:30,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 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) [2023-11-28 23:56:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 158 transitions. [2023-11-28 23:56:30,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-28 23:56:30,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:30,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-11-28 23:56:30,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-28 23:56:31,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:31,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:31,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash -446900071, now seen corresponding path program 1 times [2023-11-28 23:56:31,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:31,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918937246] [2023-11-28 23:56:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:31,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:31,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:31,158 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:31,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-28 23:56:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:31,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:56:31,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:31,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:31,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:31,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918937246] [2023-11-28 23:56:31,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918937246] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:31,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:56:31,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-28 23:56:31,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855502597] [2023-11-28 23:56:31,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:31,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:56:31,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:31,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:56:31,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:56:31,418 INFO L87 Difference]: Start difference. First operand 119 states and 158 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:31,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:31,740 INFO L93 Difference]: Finished difference Result 405 states and 555 transitions. [2023-11-28 23:56:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:56:31,741 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 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 42 [2023-11-28 23:56:31,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:31,743 INFO L225 Difference]: With dead ends: 405 [2023-11-28 23:56:31,743 INFO L226 Difference]: Without dead ends: 300 [2023-11-28 23:56:31,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:56:31,744 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 281 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:31,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 348 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:56:31,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-28 23:56:31,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 155. [2023-11-28 23:56:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.4090909090909092) internal successors, (217), 154 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 217 transitions. [2023-11-28 23:56:31,759 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 217 transitions. Word has length 42 [2023-11-28 23:56:31,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:31,759 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 217 transitions. [2023-11-28 23:56:31,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:31,760 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 217 transitions. [2023-11-28 23:56:31,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-28 23:56:31,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:31,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2023-11-28 23:56:31,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-28 23:56:31,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:31,962 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:31,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash 254164507, now seen corresponding path program 1 times [2023-11-28 23:56:31,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:31,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347238858] [2023-11-28 23:56:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:31,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:31,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:31,965 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:31,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-28 23:56:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:32,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:56:32,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:32,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:32,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:32,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347238858] [2023-11-28 23:56:32,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347238858] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:32,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:56:32,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-28 23:56:32,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457407715] [2023-11-28 23:56:32,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:32,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:56:32,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:32,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:56:32,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:56:32,286 INFO L87 Difference]: Start difference. First operand 155 states and 217 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 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) [2023-11-28 23:56:32,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:32,664 INFO L93 Difference]: Finished difference Result 484 states and 755 transitions. [2023-11-28 23:56:32,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:56:32,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 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) Word has length 42 [2023-11-28 23:56:32,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:32,667 INFO L225 Difference]: With dead ends: 484 [2023-11-28 23:56:32,667 INFO L226 Difference]: Without dead ends: 342 [2023-11-28 23:56:32,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:56:32,668 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 266 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:32,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 79 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:56:32,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-28 23:56:32,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 302. [2023-11-28 23:56:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.4485049833887043) internal successors, (436), 301 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:32,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 436 transitions. [2023-11-28 23:56:32,693 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 436 transitions. Word has length 42 [2023-11-28 23:56:32,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:32,694 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 436 transitions. [2023-11-28 23:56:32,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 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) [2023-11-28 23:56:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 436 transitions. [2023-11-28 23:56:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-28 23:56:32,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:32,695 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-28 23:56:32,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-28 23:56:32,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:32,896 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:32,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash 12185717, now seen corresponding path program 1 times [2023-11-28 23:56:32,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:32,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298669188] [2023-11-28 23:56:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:32,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:32,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:32,898 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:32,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-28 23:56:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:32,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:56:32,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 65 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:56:33,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:56:33,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:33,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298669188] [2023-11-28 23:56:33,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298669188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:33,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:56:33,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-28 23:56:33,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981129130] [2023-11-28 23:56:33,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:33,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:56:33,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:33,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:56:33,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:56:33,214 INFO L87 Difference]: Start difference. First operand 302 states and 436 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:33,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:33,498 INFO L93 Difference]: Finished difference Result 739 states and 1017 transitions. [2023-11-28 23:56:33,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:56:33,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 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 68 [2023-11-28 23:56:33,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:33,502 INFO L225 Difference]: With dead ends: 739 [2023-11-28 23:56:33,502 INFO L226 Difference]: Without dead ends: 451 [2023-11-28 23:56:33,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:56:33,503 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 196 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:33,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 299 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:56:33,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-11-28 23:56:33,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 278. [2023-11-28 23:56:33,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.3898916967509025) internal successors, (385), 277 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) [2023-11-28 23:56:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 385 transitions. [2023-11-28 23:56:33,529 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 385 transitions. Word has length 68 [2023-11-28 23:56:33,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:33,530 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 385 transitions. [2023-11-28 23:56:33,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:33,530 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 385 transitions. [2023-11-28 23:56:33,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-28 23:56:33,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:33,531 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:33,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-28 23:56:33,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:33,732 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:33,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:33,732 INFO L85 PathProgramCache]: Analyzing trace with hash -121827789, now seen corresponding path program 2 times [2023-11-28 23:56:33,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:33,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297258685] [2023-11-28 23:56:33,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:56:33,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:33,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:33,734 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:33,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-28 23:56:33,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:56:33,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:56:33,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-28 23:56:33,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:37,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:39,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:39,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297258685] [2023-11-28 23:56:39,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297258685] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:39,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:56:39,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2023-11-28 23:56:39,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203545520] [2023-11-28 23:56:39,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:39,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-28 23:56:39,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-28 23:56:39,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2023-11-28 23:56:39,680 INFO L87 Difference]: Start difference. First operand 278 states and 385 transitions. Second operand has 42 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 41 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:54,059 INFO L93 Difference]: Finished difference Result 1662 states and 2238 transitions. [2023-11-28 23:56:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-11-28 23:56:54,060 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 41 states have internal predecessors, (135), 0 states have call successors, (0), 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 68 [2023-11-28 23:56:54,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:54,066 INFO L225 Difference]: With dead ends: 1662 [2023-11-28 23:56:54,066 INFO L226 Difference]: Without dead ends: 1548 [2023-11-28 23:56:54,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2447 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=2141, Invalid=10515, Unknown=0, NotChecked=0, Total=12656 [2023-11-28 23:56:54,072 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1986 mSDsluCounter, 7043 mSDsCounter, 0 mSdLazyCounter, 4161 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 7428 SdHoareTripleChecker+Invalid, 4235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 4161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:54,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1986 Valid, 7428 Invalid, 4235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 4161 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-28 23:56:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2023-11-28 23:56:54,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 547. [2023-11-28 23:56:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.413919413919414) internal successors, (772), 546 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 772 transitions. [2023-11-28 23:56:54,140 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 772 transitions. Word has length 68 [2023-11-28 23:56:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:54,140 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 772 transitions. [2023-11-28 23:56:54,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.2142857142857144) internal successors, (135), 41 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 772 transitions. [2023-11-28 23:56:54,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-28 23:56:54,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:54,142 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:54,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-28 23:56:54,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:54,344 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:54,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:54,345 INFO L85 PathProgramCache]: Analyzing trace with hash -757023828, now seen corresponding path program 1 times [2023-11-28 23:56:54,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:54,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049793549] [2023-11-28 23:56:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:54,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:54,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:54,346 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:54,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-28 23:56:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:54,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:56:54,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 63 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:56:54,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 48 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:56:54,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:56:54,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049793549] [2023-11-28 23:56:54,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049793549] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:54,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:56:54,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-28 23:56:54,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130647225] [2023-11-28 23:56:54,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:54,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:56:54,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:56:54,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:56:54,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:56:54,632 INFO L87 Difference]: Start difference. First operand 547 states and 772 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:56:55,280 INFO L93 Difference]: Finished difference Result 1167 states and 1665 transitions. [2023-11-28 23:56:55,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:56:55,281 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 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 70 [2023-11-28 23:56:55,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:56:55,286 INFO L225 Difference]: With dead ends: 1167 [2023-11-28 23:56:55,286 INFO L226 Difference]: Without dead ends: 985 [2023-11-28 23:56:55,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:56:55,287 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 267 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:56:55,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 143 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 23:56:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2023-11-28 23:56:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 852. [2023-11-28 23:56:55,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.4230317273795534) internal successors, (1211), 851 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1211 transitions. [2023-11-28 23:56:55,366 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1211 transitions. Word has length 70 [2023-11-28 23:56:55,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:56:55,366 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 1211 transitions. [2023-11-28 23:56:55,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,367 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1211 transitions. [2023-11-28 23:56:55,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-28 23:56:55,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:56:55,368 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-11-28 23:56:55,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-28 23:56:55,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:55,568 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:56:55,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash -753152637, now seen corresponding path program 1 times [2023-11-28 23:56:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:56:55,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724746189] [2023-11-28 23:56:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:55,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:56:55,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:56:55,571 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:56:55,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-28 23:56:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:55,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-28 23:56:55,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:59,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:57:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:57:02,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:57:02,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724746189] [2023-11-28 23:57:02,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724746189] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:57:02,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:57:02,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-11-28 23:57:02,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882717568] [2023-11-28 23:57:02,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:57:02,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-28 23:57:02,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:57:02,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-28 23:57:02,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1748, Unknown=0, NotChecked=0, Total=1892 [2023-11-28 23:57:02,365 INFO L87 Difference]: Start difference. First operand 852 states and 1211 transitions. Second operand has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 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) [2023-11-28 23:57:58,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:57:58,827 INFO L93 Difference]: Finished difference Result 6294 states and 8491 transitions. [2023-11-28 23:57:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2023-11-28 23:57:58,827 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 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) Word has length 72 [2023-11-28 23:57:58,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:57:58,849 INFO L225 Difference]: With dead ends: 6294 [2023-11-28 23:57:58,850 INFO L226 Difference]: Without dead ends: 5991 [2023-11-28 23:57:58,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19814 ImplicationChecksByTransitivity, 47.7s TimeCoverageRelationStatistics Valid=7666, Invalid=53096, Unknown=0, NotChecked=0, Total=60762 [2023-11-28 23:57:58,864 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 3428 mSDsluCounter, 14496 mSDsCounter, 0 mSdLazyCounter, 8977 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3428 SdHoareTripleChecker+Valid, 15341 SdHoareTripleChecker+Invalid, 9445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 8977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:57:58,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3428 Valid, 15341 Invalid, 9445 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [468 Valid, 8977 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2023-11-28 23:57:58,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2023-11-28 23:57:59,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 3130. [2023-11-28 23:57:59,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3129 states have (on average 1.4429530201342282) internal successors, (4515), 3129 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 4515 transitions. [2023-11-28 23:57:59,224 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 4515 transitions. Word has length 72 [2023-11-28 23:57:59,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:57:59,224 INFO L495 AbstractCegarLoop]: Abstraction has 3130 states and 4515 transitions. [2023-11-28 23:57:59,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 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) [2023-11-28 23:57:59,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 4515 transitions. [2023-11-28 23:57:59,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-28 23:57:59,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:57:59,228 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2023-11-28 23:57:59,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-28 23:57:59,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:57:59,429 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:57:59,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:59,430 INFO L85 PathProgramCache]: Analyzing trace with hash 782397891, now seen corresponding path program 1 times [2023-11-28 23:57:59,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:57:59,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55983811] [2023-11-28 23:57:59,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:59,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:57:59,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:57:59,431 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:57:59,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-28 23:57:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:59,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-28 23:57:59,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:58:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:58:03,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:58:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:58:05,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:58:05,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55983811] [2023-11-28 23:58:05,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55983811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:58:05,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:58:05,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-11-28 23:58:05,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999103133] [2023-11-28 23:58:05,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:58:05,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-28 23:58:05,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:58:05,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-28 23:58:05,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1760, Unknown=0, NotChecked=0, Total=1892 [2023-11-28 23:58:05,896 INFO L87 Difference]: Start difference. First operand 3130 states and 4515 transitions. Second operand has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 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) [2023-11-28 23:58:34,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:58:34,678 INFO L93 Difference]: Finished difference Result 9239 states and 12980 transitions. [2023-11-28 23:58:34,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-11-28 23:58:34,679 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 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) Word has length 72 [2023-11-28 23:58:34,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:58:34,702 INFO L225 Difference]: With dead ends: 9239 [2023-11-28 23:58:34,702 INFO L226 Difference]: Without dead ends: 6820 [2023-11-28 23:58:34,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5112 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=2493, Invalid=17813, Unknown=0, NotChecked=0, Total=20306 [2023-11-28 23:58:34,706 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 1865 mSDsluCounter, 10730 mSDsCounter, 0 mSdLazyCounter, 6650 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 11237 SdHoareTripleChecker+Invalid, 6784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 6650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:58:34,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1865 Valid, 11237 Invalid, 6784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 6650 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-11-28 23:58:34,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6820 states. [2023-11-28 23:58:35,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6820 to 3630. [2023-11-28 23:58:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3630 states, 3629 states have (on average 1.450261780104712) internal successors, (5263), 3629 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 5263 transitions. [2023-11-28 23:58:35,194 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 5263 transitions. Word has length 72 [2023-11-28 23:58:35,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:58:35,194 INFO L495 AbstractCegarLoop]: Abstraction has 3630 states and 5263 transitions. [2023-11-28 23:58:35,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.25) internal successors, (143), 43 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) [2023-11-28 23:58:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 5263 transitions. [2023-11-28 23:58:35,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-28 23:58:35,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:58:35,199 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:35,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-28 23:58:35,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:58:35,400 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:58:35,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:35,400 INFO L85 PathProgramCache]: Analyzing trace with hash -967599070, now seen corresponding path program 1 times [2023-11-28 23:58:35,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:58:35,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186606546] [2023-11-28 23:58:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:35,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:58:35,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:58:35,402 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:58:35,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-28 23:58:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:35,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:58:35,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:58:35,510 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 23 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:58:35,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:58:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 23 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:58:35,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:58:35,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186606546] [2023-11-28 23:58:35,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186606546] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:58:35,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:58:35,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-28 23:58:35,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920036249] [2023-11-28 23:58:35,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:58:35,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:58:35,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:58:35,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:58:35,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:58:35,635 INFO L87 Difference]: Start difference. First operand 3630 states and 5263 transitions. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:37,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:58:37,134 INFO L93 Difference]: Finished difference Result 13598 states and 21694 transitions. [2023-11-28 23:58:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 23:58:37,134 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 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 74 [2023-11-28 23:58:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:58:37,156 INFO L225 Difference]: With dead ends: 13598 [2023-11-28 23:58:37,157 INFO L226 Difference]: Without dead ends: 6782 [2023-11-28 23:58:37,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2023-11-28 23:58:37,162 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 329 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:58:37,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 124 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 23:58:37,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6782 states. [2023-11-28 23:58:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6782 to 5665. [2023-11-28 23:58:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5665 states, 5664 states have (on average 1.2346398305084745) internal successors, (6993), 5664 states have internal predecessors, (6993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:37,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5665 states to 5665 states and 6993 transitions. [2023-11-28 23:58:37,860 INFO L78 Accepts]: Start accepts. Automaton has 5665 states and 6993 transitions. Word has length 74 [2023-11-28 23:58:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:58:37,860 INFO L495 AbstractCegarLoop]: Abstraction has 5665 states and 6993 transitions. [2023-11-28 23:58:37,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 5665 states and 6993 transitions. [2023-11-28 23:58:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-28 23:58:37,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:58:37,862 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-11-28 23:58:37,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-28 23:58:38,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:58:38,062 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:58:38,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:38,063 INFO L85 PathProgramCache]: Analyzing trace with hash -459659335, now seen corresponding path program 1 times [2023-11-28 23:58:38,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:58:38,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158211781] [2023-11-28 23:58:38,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:38,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:58:38,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:58:38,064 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:58:38,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-28 23:58:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:38,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-28 23:58:38,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:58:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:58:42,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:58:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:58:46,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:58:46,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158211781] [2023-11-28 23:58:46,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158211781] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:58:46,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:58:46,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-28 23:58:46,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393088440] [2023-11-28 23:58:46,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:58:46,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-28 23:58:46,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:58:46,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-28 23:58:46,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2086, Unknown=0, NotChecked=0, Total=2256 [2023-11-28 23:58:46,502 INFO L87 Difference]: Start difference. First operand 5665 states and 6993 transitions. Second operand has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:59:47,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:59:47,499 INFO L93 Difference]: Finished difference Result 8239 states and 10024 transitions. [2023-11-28 23:59:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2023-11-28 23:59:47,500 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 0 states have call successors, (0), 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 75 [2023-11-28 23:59:47,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:59:47,514 INFO L225 Difference]: With dead ends: 8239 [2023-11-28 23:59:47,514 INFO L226 Difference]: Without dead ends: 7988 [2023-11-28 23:59:47,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13768 ImplicationChecksByTransitivity, 55.2s TimeCoverageRelationStatistics Valid=6147, Invalid=41159, Unknown=0, NotChecked=0, Total=47306 [2023-11-28 23:59:47,517 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 2556 mSDsluCounter, 10056 mSDsCounter, 0 mSdLazyCounter, 6011 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 10488 SdHoareTripleChecker+Invalid, 6381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 6011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:59:47,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2556 Valid, 10488 Invalid, 6381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [370 Valid, 6011 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-28 23:59:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7988 states. [2023-11-28 23:59:48,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7988 to 6764. [2023-11-28 23:59:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6764 states, 6763 states have (on average 1.2336241313026763) internal successors, (8343), 6763 states have internal predecessors, (8343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:59:48,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6764 states to 6764 states and 8343 transitions. [2023-11-28 23:59:48,396 INFO L78 Accepts]: Start accepts. Automaton has 6764 states and 8343 transitions. Word has length 75 [2023-11-28 23:59:48,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:59:48,396 INFO L495 AbstractCegarLoop]: Abstraction has 6764 states and 8343 transitions. [2023-11-28 23:59:48,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:59:48,397 INFO L276 IsEmpty]: Start isEmpty. Operand 6764 states and 8343 transitions. [2023-11-28 23:59:48,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-28 23:59:48,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:59:48,398 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-11-28 23:59:48,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-28 23:59:48,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:59:48,599 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:59:48,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:48,599 INFO L85 PathProgramCache]: Analyzing trace with hash -170026119, now seen corresponding path program 2 times [2023-11-28 23:59:48,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:59:48,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270297814] [2023-11-28 23:59:48,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:59:48,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:59:48,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:59:48,601 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-28 23:59:48,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-28 23:59:48,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:59:48,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:59:48,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-28 23:59:48,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:59:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:59:52,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:59:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:59:56,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:59:56,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270297814] [2023-11-28 23:59:56,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270297814] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:59:56,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:59:56,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-28 23:59:56,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335035609] [2023-11-28 23:59:56,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:59:56,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-28 23:59:56,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:59:56,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-28 23:59:56,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2079, Unknown=0, NotChecked=0, Total=2256 [2023-11-28 23:59:56,689 INFO L87 Difference]: Start difference. First operand 6764 states and 8343 transitions. Second operand has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:01:31,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:01:31,318 INFO L93 Difference]: Finished difference Result 11556 states and 14135 transitions. [2023-11-29 00:01:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2023-11-29 00:01:31,318 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 0 states have call successors, (0), 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 75 [2023-11-29 00:01:31,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:01:31,329 INFO L225 Difference]: With dead ends: 11556 [2023-11-29 00:01:31,329 INFO L226 Difference]: Without dead ends: 10201 [2023-11-29 00:01:31,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23281 ImplicationChecksByTransitivity, 87.4s TimeCoverageRelationStatistics Valid=7677, Invalid=61755, Unknown=0, NotChecked=0, Total=69432 [2023-11-29 00:01:31,336 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 2884 mSDsluCounter, 10858 mSDsCounter, 0 mSdLazyCounter, 6419 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2884 SdHoareTripleChecker+Valid, 11319 SdHoareTripleChecker+Invalid, 6755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 6419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:01:31,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2884 Valid, 11319 Invalid, 6755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [336 Valid, 6419 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-11-29 00:01:31,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10201 states. [2023-11-29 00:01:32,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10201 to 8247. [2023-11-29 00:01:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8247 states, 8246 states have (on average 1.2341741450400194) internal successors, (10177), 8246 states have internal predecessors, (10177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:01:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8247 states to 8247 states and 10177 transitions. [2023-11-29 00:01:32,533 INFO L78 Accepts]: Start accepts. Automaton has 8247 states and 10177 transitions. Word has length 75 [2023-11-29 00:01:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:01:32,533 INFO L495 AbstractCegarLoop]: Abstraction has 8247 states and 10177 transitions. [2023-11-29 00:01:32,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.1041666666666665) internal successors, (149), 47 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:01:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 8247 states and 10177 transitions. [2023-11-29 00:01:32,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 00:01:32,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:01:32,536 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-11-29 00:01:32,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 00:01:32,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:01:32,737 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:01:32,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:32,737 INFO L85 PathProgramCache]: Analyzing trace with hash 397716473, now seen corresponding path program 3 times [2023-11-29 00:01:32,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:01:32,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252425889] [2023-11-29 00:01:32,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:01:32,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:01:32,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:01:32,739 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:01:32,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 00:01:32,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 00:01:32,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:01:32,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 00:01:32,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:01:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:36,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:01:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:01:40,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:01:40,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252425889] [2023-11-29 00:01:40,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252425889] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:01:40,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:01:40,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 46 [2023-11-29 00:01:40,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787765737] [2023-11-29 00:01:40,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:01:40,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 00:01:40,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:01:40,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 00:01:40,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2012, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 00:01:40,834 INFO L87 Difference]: Start difference. First operand 8247 states and 10177 transitions. Second operand has 47 states, 47 states have (on average 3.1702127659574466) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:10,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:03:10,695 INFO L93 Difference]: Finished difference Result 16315 states and 20005 transitions. [2023-11-29 00:03:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2023-11-29 00:03:10,695 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.1702127659574466) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 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 75 [2023-11-29 00:03:10,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:03:10,716 INFO L225 Difference]: With dead ends: 16315 [2023-11-29 00:03:10,716 INFO L226 Difference]: Without dead ends: 13481 [2023-11-29 00:03:10,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14084 ImplicationChecksByTransitivity, 81.8s TimeCoverageRelationStatistics Valid=6773, Invalid=39237, Unknown=0, NotChecked=0, Total=46010 [2023-11-29 00:03:10,723 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 2620 mSDsluCounter, 11208 mSDsCounter, 0 mSdLazyCounter, 6438 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2620 SdHoareTripleChecker+Valid, 11656 SdHoareTripleChecker+Invalid, 6832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 6438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:03:10,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2620 Valid, 11656 Invalid, 6832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [394 Valid, 6438 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-11-29 00:03:10,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2023-11-29 00:03:12,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 9820. [2023-11-29 00:03:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9820 states, 9819 states have (on average 1.237804257052653) internal successors, (12154), 9819 states have internal predecessors, (12154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9820 states to 9820 states and 12154 transitions. [2023-11-29 00:03:12,140 INFO L78 Accepts]: Start accepts. Automaton has 9820 states and 12154 transitions. Word has length 75 [2023-11-29 00:03:12,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:03:12,140 INFO L495 AbstractCegarLoop]: Abstraction has 9820 states and 12154 transitions. [2023-11-29 00:03:12,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.1702127659574466) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:12,140 INFO L276 IsEmpty]: Start isEmpty. Operand 9820 states and 12154 transitions. [2023-11-29 00:03:12,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 00:03:12,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:03:12,141 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2023-11-29 00:03:12,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-29 00:03:12,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:03:12,342 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:03:12,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:12,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1015384823, now seen corresponding path program 1 times [2023-11-29 00:03:12,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:03:12,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855900395] [2023-11-29 00:03:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:12,343 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:03:12,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:03:12,344 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:03:12,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 00:03:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:12,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:03:12,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:03:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 71 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 00:03:12,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:03:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 56 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 00:03:12,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:03:12,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855900395] [2023-11-29 00:03:12,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855900395] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:03:12,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:03:12,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 00:03:12,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432040157] [2023-11-29 00:03:12,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:03:12,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:03:12,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:03:12,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:03:12,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:03:12,617 INFO L87 Difference]: Start difference. First operand 9820 states and 12154 transitions. Second operand has 14 states, 14 states have (on average 8.5) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:03:15,565 INFO L93 Difference]: Finished difference Result 19955 states and 24985 transitions. [2023-11-29 00:03:15,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 00:03:15,566 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 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 76 [2023-11-29 00:03:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:03:15,579 INFO L225 Difference]: With dead ends: 19955 [2023-11-29 00:03:15,579 INFO L226 Difference]: Without dead ends: 9659 [2023-11-29 00:03:15,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=1064, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 00:03:15,585 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 671 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:03:15,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 340 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:03:15,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9659 states. [2023-11-29 00:03:16,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9659 to 6674. [2023-11-29 00:03:16,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6674 states, 6673 states have (on average 1.1892701933163494) internal successors, (7936), 6673 states have internal predecessors, (7936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6674 states to 6674 states and 7936 transitions. [2023-11-29 00:03:16,886 INFO L78 Accepts]: Start accepts. Automaton has 6674 states and 7936 transitions. Word has length 76 [2023-11-29 00:03:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:03:16,886 INFO L495 AbstractCegarLoop]: Abstraction has 6674 states and 7936 transitions. [2023-11-29 00:03:16,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 6674 states and 7936 transitions. [2023-11-29 00:03:16,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 00:03:16,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:03:16,888 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:03:16,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 00:03:17,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:03:17,088 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:03:17,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:17,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1370231246, now seen corresponding path program 1 times [2023-11-29 00:03:17,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:03:17,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086666515] [2023-11-29 00:03:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:17,089 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:03:17,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:03:17,090 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:03:17,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 00:03:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:17,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 00:03:17,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:03:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:03:21,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:03:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:03:26,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:03:26,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086666515] [2023-11-29 00:03:26,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086666515] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:03:26,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:03:26,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-29 00:03:26,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409736325] [2023-11-29 00:03:26,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:03:26,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 00:03:26,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:03:26,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 00:03:26,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2091, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 00:03:26,202 INFO L87 Difference]: Start difference. First operand 6674 states and 7936 transitions. Second operand has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:05:24,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:05:24,023 INFO L93 Difference]: Finished difference Result 11229 states and 13235 transitions. [2023-11-29 00:05:24,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2023-11-29 00:05:24,023 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 0 states have call successors, (0), 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 78 [2023-11-29 00:05:24,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:05:24,036 INFO L225 Difference]: With dead ends: 11229 [2023-11-29 00:05:24,036 INFO L226 Difference]: Without dead ends: 11026 [2023-11-29 00:05:24,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23649 ImplicationChecksByTransitivity, 109.3s TimeCoverageRelationStatistics Valid=6951, Invalid=63539, Unknown=0, NotChecked=0, Total=70490 [2023-11-29 00:05:24,042 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 2623 mSDsluCounter, 10874 mSDsCounter, 0 mSdLazyCounter, 6853 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2623 SdHoareTripleChecker+Valid, 11323 SdHoareTripleChecker+Invalid, 7341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 6853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:05:24,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2623 Valid, 11323 Invalid, 7341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [488 Valid, 6853 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-11-29 00:05:24,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11026 states. [2023-11-29 00:05:25,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11026 to 7732. [2023-11-29 00:05:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7732 states, 7731 states have (on average 1.182382615444315) internal successors, (9141), 7731 states have internal predecessors, (9141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:05:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7732 states to 7732 states and 9141 transitions. [2023-11-29 00:05:25,417 INFO L78 Accepts]: Start accepts. Automaton has 7732 states and 9141 transitions. Word has length 78 [2023-11-29 00:05:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:05:25,418 INFO L495 AbstractCegarLoop]: Abstraction has 7732 states and 9141 transitions. [2023-11-29 00:05:25,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:05:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 7732 states and 9141 transitions. [2023-11-29 00:05:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 00:05:25,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:05:25,419 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:05:25,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 00:05:25,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:05:25,620 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:05:25,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:05:25,620 INFO L85 PathProgramCache]: Analyzing trace with hash -986217998, now seen corresponding path program 2 times [2023-11-29 00:05:25,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:05:25,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697306463] [2023-11-29 00:05:25,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:05:25,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:05:25,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:05:25,622 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:05:25,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 00:05:25,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:05:25,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:05:25,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 00:05:25,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:05:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:05:29,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:05:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:05:34,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:05:34,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697306463] [2023-11-29 00:05:34,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697306463] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:05:34,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:05:34,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-29 00:05:34,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107304895] [2023-11-29 00:05:34,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:05:34,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 00:05:34,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:05:34,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 00:05:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2101, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 00:05:34,298 INFO L87 Difference]: Start difference. First operand 7732 states and 9141 transitions. Second operand has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:07:18,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:07:18,369 INFO L93 Difference]: Finished difference Result 17025 states and 20023 transitions. [2023-11-29 00:07:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2023-11-29 00:07:18,369 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 0 states have call successors, (0), 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 78 [2023-11-29 00:07:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:07:18,377 INFO L225 Difference]: With dead ends: 17025 [2023-11-29 00:07:18,377 INFO L226 Difference]: Without dead ends: 12721 [2023-11-29 00:07:18,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23597 ImplicationChecksByTransitivity, 90.0s TimeCoverageRelationStatistics Valid=6288, Invalid=62618, Unknown=0, NotChecked=0, Total=68906 [2023-11-29 00:07:18,382 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 2402 mSDsluCounter, 15924 mSDsCounter, 0 mSdLazyCounter, 10039 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 16540 SdHoareTripleChecker+Invalid, 10395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 10039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:07:18,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2402 Valid, 16540 Invalid, 10395 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [356 Valid, 10039 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2023-11-29 00:07:18,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12721 states. [2023-11-29 00:07:19,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12721 to 8925. [2023-11-29 00:07:19,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8925 states, 8924 states have (on average 1.1815329448677723) internal successors, (10544), 8924 states have internal predecessors, (10544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:07:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8925 states to 8925 states and 10544 transitions. [2023-11-29 00:07:20,002 INFO L78 Accepts]: Start accepts. Automaton has 8925 states and 10544 transitions. Word has length 78 [2023-11-29 00:07:20,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:07:20,002 INFO L495 AbstractCegarLoop]: Abstraction has 8925 states and 10544 transitions. [2023-11-29 00:07:20,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:07:20,003 INFO L276 IsEmpty]: Start isEmpty. Operand 8925 states and 10544 transitions. [2023-11-29 00:07:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 00:07:20,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:07:20,004 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:07:20,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 00:07:20,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:07:20,205 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:07:20,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:07:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1200432082, now seen corresponding path program 3 times [2023-11-29 00:07:20,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:07:20,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692224293] [2023-11-29 00:07:20,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:07:20,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:07:20,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:07:20,206 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:07:20,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19310e8f-2522-40ae-85c7-5f9d67a6d4f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 00:07:20,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 00:07:20,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:07:20,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 00:07:20,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:07:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:07:24,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:07:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:07:29,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:07:29,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692224293] [2023-11-29 00:07:29,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692224293] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:07:29,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:07:29,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-29 00:07:29,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971907356] [2023-11-29 00:07:29,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:07:29,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 00:07:29,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:07:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 00:07:29,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2096, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 00:07:29,147 INFO L87 Difference]: Start difference. First operand 8925 states and 10544 transitions. Second operand has 48 states, 48 states have (on average 3.2291666666666665) internal successors, (155), 47 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)