./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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:41:45,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:41:45,462 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:41:45,467 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:41:45,468 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:41:45,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:41:45,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:41:45,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:41:45,494 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:41:45,495 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:41:45,495 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:41:45,495 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:41:45,496 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:41:45,496 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:41:45,497 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:41:45,497 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:41:45,498 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:41:45,498 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:41:45,499 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:41:45,499 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:41:45,500 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:41:45,500 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:41:45,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:41:45,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:41:45,502 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:41:45,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:41:45,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:41:45,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:41:45,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:41:45,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:41:45,507 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:41:45,507 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:41:45,507 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:41:45,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:41:45,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:41:45,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:41:45,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:41:45,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:41:45,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:41:45,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:41:45,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:41:45,513 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:41:45,513 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:41:45,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:41:45,514 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:41:45,514 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:41:45,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:41:45,515 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 [2024-11-09 05:41:45,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:41:45,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:41:45,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:41:45,844 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:41:45,846 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:41:45,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/bitvector/byte_add_1-1.i Unable to find full path for "g++" [2024-11-09 05:41:47,832 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:41:48,032 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:41:48,033 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/sv-benchmarks/c/bitvector/byte_add_1-1.i [2024-11-09 05:41:48,041 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/data/b2d90cc9d/80b8ea973b554fe4943d964acd51ab2c/FLAG8fc730156 [2024-11-09 05:41:48,414 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/data/b2d90cc9d/80b8ea973b554fe4943d964acd51ab2c [2024-11-09 05:41:48,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:41:48,418 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:41:48,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:41:48,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:41:48,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:41:48,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3a4ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48, skipping insertion in model container [2024-11-09 05:41:48,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,459 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:41:48,656 WARN L250 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_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2024-11-09 05:41:48,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:41:48,728 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:41:48,743 WARN L250 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_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2024-11-09 05:41:48,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:41:48,795 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:41:48,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48 WrapperNode [2024-11-09 05:41:48,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:41:48,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:41:48,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:41:48,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:41:48,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,895 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 145 [2024-11-09 05:41:48,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:41:48,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:41:48,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:41:48,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:41:48,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,914 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,951 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:41:48,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:41:48,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:41:48,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:41:48,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48" (1/1) ... [2024-11-09 05:41:48,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:41:48,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:41:49,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:41:49,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:41:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:41:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:41:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:41:49,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:41:49,125 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:41:49,128 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:41:49,596 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-09 05:41:49,596 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:41:49,949 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:41:49,949 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:41:49,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:41:49 BoogieIcfgContainer [2024-11-09 05:41:49,951 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:41:49,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:41:49,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:41:49,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:41:49,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:41:48" (1/3) ... [2024-11-09 05:41:49,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159e25f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:41:49, skipping insertion in model container [2024-11-09 05:41:49,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:41:48" (2/3) ... [2024-11-09 05:41:49,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159e25f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:41:49, skipping insertion in model container [2024-11-09 05:41:49,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:41:49" (3/3) ... [2024-11-09 05:41:49,964 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2024-11-09 05:41:49,982 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:41:49,983 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:41:50,116 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:41:50,124 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@471bd6c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:41:50,124 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:41:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:50,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 05:41:50,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:50,146 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 05:41:50,147 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:50,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:50,155 INFO L85 PathProgramCache]: Analyzing trace with hash 794024140, now seen corresponding path program 1 times [2024-11-09 05:41:50,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:50,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609660226] [2024-11-09 05:41:50,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:50,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:50,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:41:50,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:50,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609660226] [2024-11-09 05:41:50,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609660226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:41:50,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:41:50,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:41:50,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262773017] [2024-11-09 05:41:50,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:41:50,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:41:50,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:41:50,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:41:50,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:41:50,723 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:50,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:41:50,811 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2024-11-09 05:41:50,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:41:50,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-09 05:41:50,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:41:50,823 INFO L225 Difference]: With dead ends: 21 [2024-11-09 05:41:50,823 INFO L226 Difference]: Without dead ends: 13 [2024-11-09 05:41:50,827 INFO L431 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 [2024-11-09 05:41:50,831 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:41:50,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:41:50,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-09 05:41:50,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-09 05:41:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2024-11-09 05:41:50,876 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 18 transitions. Word has length 6 [2024-11-09 05:41:50,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:41:50,876 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 18 transitions. [2024-11-09 05:41:50,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:41:50,877 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2024-11-09 05:41:50,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 05:41:50,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:41:50,878 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:41:50,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:41:50,879 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:41:50,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:41:50,879 INFO L85 PathProgramCache]: Analyzing trace with hash 818032396, now seen corresponding path program 1 times [2024-11-09 05:41:50,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:41:50,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849702497] [2024-11-09 05:41:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:50,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:41:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:41:51,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:41:51,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849702497] [2024-11-09 05:41:51,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849702497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:41:51,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654802372] [2024-11-09 05:41:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:41:51,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:41:51,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:41:51,226 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:41:51,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:41:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:41:51,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:41:51,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:41:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:41:52,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:41:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:41:53,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654802372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:41:53,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1869246271] [2024-11-09 05:41:53,671 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 05:41:53,671 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:41:53,675 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:41:53,681 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:41:53,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:41:55,025 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:42:00,576 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '115#(and (exists ((|v_ULTIMATE.start_mp_add_#t~bitwise1#1_47| Int) (|v_ULTIMATE.start_main_~b~0#1_28| Int) (|v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| Int) (|v_ULTIMATE.start_mp_add_~r1~0#1_68| Int) (|v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| Int) (|v_ULTIMATE.start_mp_add_~r2~0#1_72| Int) (|v_ULTIMATE.start_mp_add_~r0~0#1_71| Int) (|v_ULTIMATE.start_mp_add_~r3~0#1_76| Int)) (and (<= (mod |v_ULTIMATE.start_mp_add_~r0~0#1_71| 256) |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47|) (<= (* 65536 (mod |v_ULTIMATE.start_mp_add_~r2~0#1_72| 256)) |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45|) (not (= (mod (+ 234770789 |v_ULTIMATE.start_main_~b~0#1_28|) 4294967296) (mod |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| 4294967296))) (<= |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| (+ |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47| (* 65536 (mod |v_ULTIMATE.start_mp_add_~r2~0#1_72| 256)))) (<= |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47| (+ (* (mod |v_ULTIMATE.start_mp_add_~r1~0#1_68| 256) 256) (mod |v_ULTIMATE.start_mp_add_~r0~0#1_71| 256))) (<= (* (mod |v_ULTIMATE.start_mp_add_~r1~0#1_68| 256) 256) |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47|) (<= |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47| |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45|) (or (and (not (= |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| 0)) (or (and (<= (mod |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| 4294967296) (+ |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| (* (mod |v_ULTIMATE.start_mp_add_~r3~0#1_76| 256) 16777216))) (<= (* (mod |v_ULTIMATE.start_mp_add_~r3~0#1_76| 256) 16777216) (mod |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| 4294967296)) (not (= (mod |v_ULTIMATE.start_mp_add_~r3~0#1_76| 256) 0))) (and (= |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29|) (= (mod |v_ULTIMATE.start_mp_add_~r3~0#1_76| 256) 0)))) (and (= |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| 0) (= |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| (* (mod |v_ULTIMATE.start_mp_add_~r3~0#1_76| 256) 16777216)))))) (exists ((|v_ULTIMATE.start_mp_add_~carry~0#1_57| Int)) (= (mod |v_ULTIMATE.start_mp_add_~carry~0#1_57| 65536) 0)) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_mp_add_~nb~0#1_60| Int) (|v_ULTIMATE.start_mp_add_~i~0#1_135| Int)) (and (<= 1 |v_ULTIMATE.start_mp_add_~nb~0#1_60|) (<= |v_ULTIMATE.start_mp_add_~nb~0#1_60| 4) (<= 4 (mod |v_ULTIMATE.start_mp_add_~i~0#1_135| 256)))))' at error location [2024-11-09 05:42:00,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:42:00,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:42:00,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2024-11-09 05:42:00,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639086321] [2024-11-09 05:42:00,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:42:00,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:42:00,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:00,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:42:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2024-11-09 05:42:00,581 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:01,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:01,371 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2024-11-09 05:42:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:42:01,373 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 05:42:01,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:01,373 INFO L225 Difference]: With dead ends: 32 [2024-11-09 05:42:01,374 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 05:42:01,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=83, Invalid=222, Unknown=1, NotChecked=0, Total=306 [2024-11-09 05:42:01,379 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 19 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:01,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 10 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:42:01,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 05:42:01,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2024-11-09 05:42:01,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 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) [2024-11-09 05:42:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2024-11-09 05:42:01,388 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 8 [2024-11-09 05:42:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:01,389 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2024-11-09 05:42:01,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:01,390 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2024-11-09 05:42:01,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:42:01,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:01,391 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:01,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:42:01,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:01,592 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:01,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:01,593 INFO L85 PathProgramCache]: Analyzing trace with hash 707873608, now seen corresponding path program 1 times [2024-11-09 05:42:01,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:01,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771989812] [2024-11-09 05:42:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:01,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:02,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:02,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:02,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771989812] [2024-11-09 05:42:02,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771989812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:42:02,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537261460] [2024-11-09 05:42:02,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:02,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:02,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:02,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:02,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:42:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:03,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 05:42:03,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:04,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:06,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537261460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:06,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [778447315] [2024-11-09 05:42:06,772 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 05:42:06,773 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:42:06,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:42:06,773 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:42:06,773 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:42:07,716 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:42:15,468 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '285#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_mp_add_~r1~0#1_76| Int) (|v_ULTIMATE.start_mp_add_#t~bitwise1#1_47| Int) (|v_ULTIMATE.start_mp_add_~r3~0#1_84| Int) (|v_ULTIMATE.start_main_~b~0#1_29| Int) (|v_ULTIMATE.start_mp_add_~r0~0#1_79| Int) (|v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| Int) (|v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| Int) (|v_ULTIMATE.start_mp_add_~r2~0#1_80| Int)) (and (<= (* 256 (mod |v_ULTIMATE.start_mp_add_~r1~0#1_76| 256)) |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47|) (not (= (mod (+ 234770789 |v_ULTIMATE.start_main_~b~0#1_29|) 4294967296) (mod |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| 4294967296))) (<= (* 65536 (mod |v_ULTIMATE.start_mp_add_~r2~0#1_80| 256)) |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45|) (or (and (= |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| (* (mod |v_ULTIMATE.start_mp_add_~r3~0#1_84| 256) 16777216)) (= |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| 0)) (and (or (and (= |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29|) (= (mod |v_ULTIMATE.start_mp_add_~r3~0#1_84| 256) 0)) (and (not (= (mod |v_ULTIMATE.start_mp_add_~r3~0#1_84| 256) 0)) (<= (* (mod |v_ULTIMATE.start_mp_add_~r3~0#1_84| 256) 16777216) (mod |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| 4294967296)) (<= (mod |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| 4294967296) (+ |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| (* (mod |v_ULTIMATE.start_mp_add_~r3~0#1_84| 256) 16777216))))) (not (= |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| 0)))) (<= (mod |v_ULTIMATE.start_mp_add_~r0~0#1_79| 256) |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47|) (<= |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| (+ |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47| (* 65536 (mod |v_ULTIMATE.start_mp_add_~r2~0#1_80| 256)))) (<= |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47| |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45|) (<= |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47| (+ (* 256 (mod |v_ULTIMATE.start_mp_add_~r1~0#1_76| 256)) (mod |v_ULTIMATE.start_mp_add_~r0~0#1_79| 256))))) (exists ((|v_ULTIMATE.start_mp_add_~nb~0#1_63| Int) (|v_ULTIMATE.start_mp_add_~i~0#1_148| Int)) (and (<= 4 (mod |v_ULTIMATE.start_mp_add_~i~0#1_148| 256)) (<= 1 |v_ULTIMATE.start_mp_add_~nb~0#1_63|) (<= |v_ULTIMATE.start_mp_add_~nb~0#1_63| 4))) (exists ((|v_ULTIMATE.start_mp_add_~carry~0#1_67| Int)) (= (mod |v_ULTIMATE.start_mp_add_~carry~0#1_67| 65536) 0)))' at error location [2024-11-09 05:42:15,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:42:15,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:42:15,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 10] total 24 [2024-11-09 05:42:15,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723133207] [2024-11-09 05:42:15,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:42:15,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:42:15,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:15,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:42:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=682, Unknown=2, NotChecked=0, Total=870 [2024-11-09 05:42:15,472 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 25 states, 25 states have (on average 1.28) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:19,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:19,580 INFO L93 Difference]: Finished difference Result 64 states and 91 transitions. [2024-11-09 05:42:19,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 05:42:19,580 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 05:42:19,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:19,581 INFO L225 Difference]: With dead ends: 64 [2024-11-09 05:42:19,582 INFO L226 Difference]: Without dead ends: 55 [2024-11-09 05:42:19,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=491, Invalid=1763, Unknown=2, NotChecked=0, Total=2256 [2024-11-09 05:42:19,584 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 35 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:19,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 25 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 05:42:19,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-09 05:42:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 32. [2024-11-09 05:42:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2024-11-09 05:42:19,597 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 12 [2024-11-09 05:42:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:19,598 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2024-11-09 05:42:19,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2024-11-09 05:42:19,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:42:19,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:19,599 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:19,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:42:19,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:19,800 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:19,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:19,800 INFO L85 PathProgramCache]: Analyzing trace with hash -502502396, now seen corresponding path program 2 times [2024-11-09 05:42:19,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:19,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343147790] [2024-11-09 05:42:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:19,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:20,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:42:20,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343147790] [2024-11-09 05:42:20,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343147790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:42:20,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112920435] [2024-11-09 05:42:20,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:42:20,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:20,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:20,274 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:20,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:42:20,464 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:42:20,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:42:20,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 05:42:20,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:42:20,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:42:20,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112920435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:20,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2083370397] [2024-11-09 05:42:20,895 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 05:42:20,896 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:42:20,896 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:42:20,897 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:42:20,897 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:42:21,948 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:42:27,938 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '549#(and (exists ((|v_ULTIMATE.start_mp_add_~carry~0#1_75| Int)) (= (mod |v_ULTIMATE.start_mp_add_~carry~0#1_75| 65536) 0)) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_mp_add_~r0~0#1_87| Int) (|v_ULTIMATE.start_mp_add_#t~bitwise1#1_47| Int) (|v_ULTIMATE.start_mp_add_~r2~0#1_88| Int) (|v_ULTIMATE.start_mp_add_~r3~0#1_92| Int) (|v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| Int) (|v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| Int) (|v_ULTIMATE.start_mp_add_~r1~0#1_84| Int) (|v_ULTIMATE.start_main_~b~0#1_30| Int)) (and (<= (* (mod |v_ULTIMATE.start_mp_add_~r2~0#1_88| 256) 65536) |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45|) (<= (* 256 (mod |v_ULTIMATE.start_mp_add_~r1~0#1_84| 256)) |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47|) (<= |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47| (+ (* 256 (mod |v_ULTIMATE.start_mp_add_~r1~0#1_84| 256)) (mod |v_ULTIMATE.start_mp_add_~r0~0#1_87| 256))) (<= (mod |v_ULTIMATE.start_mp_add_~r0~0#1_87| 256) |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47|) (or (and (not (= |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| 0)) (or (and (= (mod |v_ULTIMATE.start_mp_add_~r3~0#1_92| 256) 0) (= |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29|)) (and (<= (mod |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| 4294967296) (+ |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| (* 16777216 (mod |v_ULTIMATE.start_mp_add_~r3~0#1_92| 256)))) (<= (* 16777216 (mod |v_ULTIMATE.start_mp_add_~r3~0#1_92| 256)) (mod |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| 4294967296)) (not (= (mod |v_ULTIMATE.start_mp_add_~r3~0#1_92| 256) 0))))) (and (= |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| 0) (= |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| (* 16777216 (mod |v_ULTIMATE.start_mp_add_~r3~0#1_92| 256))))) (<= |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47| |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45|) (<= |v_ULTIMATE.start_mp_add_#t~bitwise2#1_45| (+ |v_ULTIMATE.start_mp_add_#t~bitwise1#1_47| (* (mod |v_ULTIMATE.start_mp_add_~r2~0#1_88| 256) 65536))) (not (= (mod (+ 234770789 |v_ULTIMATE.start_main_~b~0#1_30|) 4294967296) (mod |v_ULTIMATE.start_mp_add_#t~bitwise3#1_29| 4294967296))))) (exists ((|v_ULTIMATE.start_mp_add_~nb~0#1_66| Int) (|v_ULTIMATE.start_mp_add_~i~0#1_158| Int)) (and (<= 1 |v_ULTIMATE.start_mp_add_~nb~0#1_66|) (<= |v_ULTIMATE.start_mp_add_~nb~0#1_66| 4) (<= 4 (mod |v_ULTIMATE.start_mp_add_~i~0#1_158| 256)))))' at error location [2024-11-09 05:42:27,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:42:27,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:42:27,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 7] total 16 [2024-11-09 05:42:27,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255885219] [2024-11-09 05:42:27,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:42:27,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 05:42:27,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:42:27,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 05:42:27,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=364, Unknown=1, NotChecked=0, Total=462 [2024-11-09 05:42:27,945 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 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) [2024-11-09 05:42:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:28,348 INFO L93 Difference]: Finished difference Result 42 states and 58 transitions. [2024-11-09 05:42:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 05:42:28,349 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 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 12 [2024-11-09 05:42:28,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:28,350 INFO L225 Difference]: With dead ends: 42 [2024-11-09 05:42:28,350 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 05:42:28,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=118, Invalid=433, Unknown=1, NotChecked=0, Total=552 [2024-11-09 05:42:28,352 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:28,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 21 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:42:28,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 05:42:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-09 05:42:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2024-11-09 05:42:28,364 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2024-11-09 05:42:28,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:28,365 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2024-11-09 05:42:28,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 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) [2024-11-09 05:42:28,365 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2024-11-09 05:42:28,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 05:42:28,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:28,365 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:28,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:42:28,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:28,566 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:28,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:28,567 INFO L85 PathProgramCache]: Analyzing trace with hash 842125772, now seen corresponding path program 2 times [2024-11-09 05:42:28,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:42:28,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063841103] [2024-11-09 05:42:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:28,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:42:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:42:29,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 05:42:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:42:30,304 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 05:42:30,305 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 05:42:30,306 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:42:30,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:42:30,312 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1] [2024-11-09 05:42:30,356 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:42:30,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:42:30 BoogieIcfgContainer [2024-11-09 05:42:30,360 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:42:30,361 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:42:30,361 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:42:30,361 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:42:30,362 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:41:49" (3/4) ... [2024-11-09 05:42:30,365 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 05:42:30,366 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:42:30,367 INFO L158 Benchmark]: Toolchain (without parser) took 41949.01ms. Allocated memory was 121.6MB in the beginning and 247.5MB in the end (delta: 125.8MB). Free memory was 64.1MB in the beginning and 172.5MB in the end (delta: -108.4MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2024-11-09 05:42:30,367 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 121.6MB. Free memory is still 91.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:42:30,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.49ms. Allocated memory is still 121.6MB. Free memory was 63.9MB in the beginning and 48.9MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 05:42:30,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.25ms. Allocated memory was 121.6MB in the beginning and 169.9MB in the end (delta: 48.2MB). Free memory was 48.9MB in the beginning and 140.1MB in the end (delta: -91.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2024-11-09 05:42:30,368 INFO L158 Benchmark]: Boogie Preprocessor took 61.38ms. Allocated memory is still 169.9MB. Free memory was 140.0MB in the beginning and 139.1MB in the end (delta: 991.4kB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2024-11-09 05:42:30,369 INFO L158 Benchmark]: RCFGBuilder took 989.16ms. Allocated memory is still 169.9MB. Free memory was 139.1MB in the beginning and 81.2MB in the end (delta: 57.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-09 05:42:30,369 INFO L158 Benchmark]: TraceAbstraction took 40405.37ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 80.4MB in the beginning and 173.6MB in the end (delta: -93.2MB). Peak memory consumption was 90.9MB. Max. memory is 16.1GB. [2024-11-09 05:42:30,369 INFO L158 Benchmark]: Witness Printer took 5.78ms. Allocated memory is still 247.5MB. Free memory was 173.6MB in the beginning and 172.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:42:30,371 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 121.6MB. Free memory is still 91.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 375.49ms. Allocated memory is still 121.6MB. Free memory was 63.9MB in the beginning and 48.9MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.25ms. Allocated memory was 121.6MB in the beginning and 169.9MB in the end (delta: 48.2MB). Free memory was 48.9MB in the beginning and 140.1MB in the end (delta: -91.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.38ms. Allocated memory is still 169.9MB. Free memory was 140.0MB in the beginning and 139.1MB in the end (delta: 991.4kB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * RCFGBuilder took 989.16ms. Allocated memory is still 169.9MB. Free memory was 139.1MB in the beginning and 81.2MB in the end (delta: 57.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 40405.37ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 80.4MB in the beginning and 173.6MB in the end (delta: -93.2MB). Peak memory consumption was 90.9MB. Max. memory is 16.1GB. * Witness Printer took 5.78ms. Allocated memory is still 247.5MB. Free memory was 173.6MB in the beginning and 172.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 [L59] COND FALSE !(a3 == (unsigned char)0) [L68] nb = (unsigned char)4 [L69] COND FALSE !(b3 == (unsigned char)0) [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=-268324965, b1=15729071, b2=61441, b3=240, carry=0, i=0, na=4, nb=4] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=-268324965, b1=15729071, b2=61441, b3=240, carry=0, i=0, na=4, nb=4] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 [L83] COND TRUE i < na [L84] COND TRUE i == (unsigned char)0 [L84] partial_sum = partial_sum + a0 [L85] COND FALSE !(i == (unsigned char)1) [L86] COND FALSE !(i == (unsigned char)2) [L87] COND FALSE !(i == (unsigned char)3) [L89] COND TRUE i < nb [L90] COND TRUE i == (unsigned char)0 [L90] partial_sum = partial_sum + b0 [L91] COND FALSE !(i == (unsigned char)1) [L92] COND FALSE !(i == (unsigned char)2) [L93] COND FALSE !(i == (unsigned char)3) [L95] COND TRUE partial_sum > ((unsigned char)255) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum [L100] COND FALSE !(i == (unsigned char)1) [L101] COND FALSE !(i == (unsigned char)2) [L102] COND FALSE !(i == (unsigned char)3) [L104] i = i + (unsigned char)1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=-268324965, b1=15729071, b2=61441, b3=240, carry=1, i=1, na=4, nb=4, r0=0, r1=0, r2=0, r3=254] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=-268324965, b1=15729071, b2=61441, b3=240, carry=1, i=1, na=4, nb=4, r0=0, r1=0, r2=0, r3=254] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 [L83] COND TRUE i < na [L84] COND FALSE !(i == (unsigned char)0) [L85] COND TRUE i == (unsigned char)1 [L85] partial_sum = partial_sum + a1 [L86] COND FALSE !(i == (unsigned char)2) [L87] COND FALSE !(i == (unsigned char)3) [L89] COND TRUE i < nb [L90] COND FALSE !(i == (unsigned char)0) [L91] COND TRUE i == (unsigned char)1 [L91] partial_sum = partial_sum + b1 [L92] COND FALSE !(i == (unsigned char)2) [L93] COND FALSE !(i == (unsigned char)3) [L95] COND TRUE partial_sum > ((unsigned char)255) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 [L99] COND FALSE !(i == (unsigned char)0) [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum [L101] COND FALSE !(i == (unsigned char)2) [L102] COND FALSE !(i == (unsigned char)3) [L104] i = i + (unsigned char)1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=-268324965, b1=15729071, b2=61441, b3=240, carry=1, i=2, na=4, nb=4, r0=0, r1=1, r2=0, r3=254] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=-268324965, b1=15729071, b2=61441, b3=240, carry=1, i=2, na=4, nb=4, r0=0, r1=1, r2=0, r3=254] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 [L83] COND TRUE i < na [L84] COND FALSE !(i == (unsigned char)0) [L85] COND FALSE !(i == (unsigned char)1) [L86] COND TRUE i == (unsigned char)2 [L86] partial_sum = partial_sum + a2 [L87] COND FALSE !(i == (unsigned char)3) [L89] COND TRUE i < nb [L90] COND FALSE !(i == (unsigned char)0) [L91] COND FALSE !(i == (unsigned char)1) [L92] COND TRUE i == (unsigned char)2 [L92] partial_sum = partial_sum + b2 [L93] COND FALSE !(i == (unsigned char)3) [L95] COND TRUE partial_sum > ((unsigned char)255) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 [L99] COND FALSE !(i == (unsigned char)0) [L100] COND FALSE !(i == (unsigned char)1) [L101] COND TRUE i == (unsigned char)2 [L101] r2 = (unsigned char)partial_sum [L102] COND FALSE !(i == (unsigned char)3) [L104] i = i + (unsigned char)1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=-268324965, b1=15729071, b2=61441, b3=240, carry=1, i=3, na=4, nb=4, r0=0, r1=1, r2=0, r3=254] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=-268324965, b1=15729071, b2=61441, b3=240, carry=1, i=3, na=4, nb=4, r0=0, r1=1, r2=0, r3=254] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 [L83] COND TRUE i < na [L84] COND FALSE !(i == (unsigned char)0) [L85] COND FALSE !(i == (unsigned char)1) [L86] COND FALSE !(i == (unsigned char)2) [L87] COND TRUE i == (unsigned char)3 [L87] partial_sum = partial_sum + a3 [L89] COND TRUE i < nb [L90] COND FALSE !(i == (unsigned char)0) [L91] COND FALSE !(i == (unsigned char)1) [L92] COND FALSE !(i == (unsigned char)2) [L93] COND TRUE i == (unsigned char)3 [L93] partial_sum = partial_sum + b3 [L95] COND FALSE !(partial_sum > ((unsigned char)255)) [L99] COND FALSE !(i == (unsigned char)0) [L100] COND FALSE !(i == (unsigned char)1) [L101] COND FALSE !(i == (unsigned char)2) [L102] COND TRUE i == (unsigned char)3 [L102] r3 = (unsigned char)partial_sum [L104] i = i + (unsigned char)1 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=-268324965, b1=15729071, b2=61441, b3=240, carry=0, i=4, na=4, nb=4, r0=0, r1=1, r2=0, r3=254] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=-268324965, b1=15729071, b2=61441, b3=240, i=4, r0=0, r1=1, r2=0, r3=254] [L107] COND TRUE i < (unsigned char)4 VAL [a0=234770789, a1=917073, a2=3582, a3=13, b0=-268324965, b1=15729071, b2=61441, b3=240, r0=0, r1=1, r2=0, r3=254] [L116] EXPR r0 | (r1 << 8U) [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [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) [L25] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.2s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 95 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 95 mSolverCounterUnsat, 14 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 24.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=3, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 84 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 1331 SizeOfPredicates, 32 NumberOfNonLiveVariables, 222 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 6/33 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 [2024-11-09 05:42:30,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:42:32,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:42:33,063 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 05:42:33,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:42:33,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:42:33,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:42:33,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:42:33,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:42:33,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:42:33,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:42:33,118 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:42:33,118 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:42:33,118 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:42:33,119 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:42:33,119 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:42:33,119 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:42:33,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:42:33,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:42:33,120 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:42:33,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:42:33,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:42:33,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:42:33,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:42:33,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:42:33,124 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 05:42:33,124 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 05:42:33,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:42:33,125 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 05:42:33,125 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:42:33,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:42:33,126 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:42:33,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:42:33,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 05:42:33,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:42:33,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:42:33,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:42:33,128 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:42:33,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:42:33,129 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:42:33,129 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 05:42:33,129 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 05:42:33,130 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:42:33,132 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:42:33,132 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 [2024-11-09 05:42:33,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:42:33,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:42:33,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:42:33,554 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:42:33,555 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:42:33,556 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/bitvector/byte_add_1-1.i Unable to find full path for "g++" [2024-11-09 05:42:35,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:42:35,795 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:42:35,795 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/sv-benchmarks/c/bitvector/byte_add_1-1.i [2024-11-09 05:42:35,807 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/data/73f257d54/c182eb5d9ebc4b57aa38090170b81ae0/FLAG1a5f86b71 [2024-11-09 05:42:35,823 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/data/73f257d54/c182eb5d9ebc4b57aa38090170b81ae0 [2024-11-09 05:42:35,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:42:35,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:42:35,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:42:35,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:42:35,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:42:35,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:42:35" (1/1) ... [2024-11-09 05:42:35,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfbdffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:35, skipping insertion in model container [2024-11-09 05:42:35,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:42:35" (1/1) ... [2024-11-09 05:42:35,876 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:42:36,108 WARN L250 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_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2024-11-09 05:42:36,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:42:36,194 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:42:36,212 WARN L250 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_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2024-11-09 05:42:36,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:42:36,280 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:42:36,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36 WrapperNode [2024-11-09 05:42:36,281 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:42:36,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:42:36,282 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:42:36,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:42:36,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36" (1/1) ... [2024-11-09 05:42:36,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36" (1/1) ... [2024-11-09 05:42:36,339 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 121 [2024-11-09 05:42:36,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:42:36,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:42:36,343 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:42:36,343 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:42:36,353 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36" (1/1) ... [2024-11-09 05:42:36,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36" (1/1) ... [2024-11-09 05:42:36,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36" (1/1) ... [2024-11-09 05:42:36,356 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36" (1/1) ... [2024-11-09 05:42:36,369 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36" (1/1) ... [2024-11-09 05:42:36,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36" (1/1) ... [2024-11-09 05:42:36,375 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36" (1/1) ... [2024-11-09 05:42:36,376 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36" (1/1) ... [2024-11-09 05:42:36,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:42:36,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:42:36,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:42:36,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:42:36,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36" (1/1) ... [2024-11-09 05:42:36,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:42:36,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:36,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:42:36,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:42:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:42:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 05:42:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:42:36,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:42:36,558 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:42:36,560 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:42:36,987 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-09 05:42:36,987 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:42:37,005 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:42:37,005 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:42:37,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:42:37 BoogieIcfgContainer [2024-11-09 05:42:37,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:42:37,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:42:37,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:42:37,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:42:37,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:42:35" (1/3) ... [2024-11-09 05:42:37,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50725637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:42:37, skipping insertion in model container [2024-11-09 05:42:37,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:42:36" (2/3) ... [2024-11-09 05:42:37,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50725637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:42:37, skipping insertion in model container [2024-11-09 05:42:37,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:42:37" (3/3) ... [2024-11-09 05:42:37,017 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2024-11-09 05:42:37,040 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:42:37,040 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:42:37,105 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:42:37,113 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@5c4829d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:42:37,113 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:42:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 43 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:37,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:42:37,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:37,126 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:37,126 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:37,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:37,133 INFO L85 PathProgramCache]: Analyzing trace with hash 255061167, now seen corresponding path program 1 times [2024-11-09 05:42:37,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:37,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999656409] [2024-11-09 05:42:37,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:37,148 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 [2024-11-09 05:42:37,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:37,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:37,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:37,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:42:37,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:37,360 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:42:37,364 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:42:37,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999656409] [2024-11-09 05:42:37,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999656409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:37,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:37,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:42:37,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590292508] [2024-11-09 05:42:37,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:37,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:42:37,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:42:37,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:42:37,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:42:37,400 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 43 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2024-11-09 05:42:37,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:37,595 INFO L93 Difference]: Finished difference Result 115 states and 201 transitions. [2024-11-09 05:42:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:42:37,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 [2024-11-09 05:42:37,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:37,608 INFO L225 Difference]: With dead ends: 115 [2024-11-09 05:42:37,608 INFO L226 Difference]: Without dead ends: 77 [2024-11-09 05:42:37,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:42:37,615 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 72 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:37,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 134 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:42:37,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-09 05:42:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2024-11-09 05:42:37,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.64) internal successors, (123), 75 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 123 transitions. [2024-11-09 05:42:37,658 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 123 transitions. Word has length 12 [2024-11-09 05:42:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:37,659 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 123 transitions. [2024-11-09 05:42:37,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2024-11-09 05:42:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 123 transitions. [2024-11-09 05:42:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:42:37,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:37,661 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:37,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:37,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:37,863 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:37,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1658749440, now seen corresponding path program 1 times [2024-11-09 05:42:37,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:37,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599551531] [2024-11-09 05:42:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:37,865 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 [2024-11-09 05:42:37,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:37,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:37,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:37,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:42:37,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:37,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:42:37,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:42:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599551531] [2024-11-09 05:42:37,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599551531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:37,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:37,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:42:37,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301189099] [2024-11-09 05:42:37,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:37,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:42:37,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:42:38,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:42:38,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:42:38,000 INFO L87 Difference]: Start difference. First operand 76 states and 123 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2024-11-09 05:42:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:38,393 INFO L93 Difference]: Finished difference Result 143 states and 246 transitions. [2024-11-09 05:42:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:42:38,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 [2024-11-09 05:42:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:38,395 INFO L225 Difference]: With dead ends: 143 [2024-11-09 05:42:38,395 INFO L226 Difference]: Without dead ends: 113 [2024-11-09 05:42:38,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:42:38,397 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 85 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:38,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 249 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:42:38,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-09 05:42:38,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 76. [2024-11-09 05:42:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.64) internal successors, (123), 75 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 123 transitions. [2024-11-09 05:42:38,424 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 123 transitions. Word has length 13 [2024-11-09 05:42:38,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:38,424 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 123 transitions. [2024-11-09 05:42:38,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2024-11-09 05:42:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 123 transitions. [2024-11-09 05:42:38,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 05:42:38,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:38,425 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:38,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:38,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:38,627 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:38,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash -964842952, now seen corresponding path program 1 times [2024-11-09 05:42:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:38,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450807943] [2024-11-09 05:42:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:38,629 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 [2024-11-09 05:42:38,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:38,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:38,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:38,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:42:38,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:38,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:38,752 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:42:38,753 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:42:38,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450807943] [2024-11-09 05:42:38,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450807943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:38,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:38,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:42:38,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718593875] [2024-11-09 05:42:38,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:38,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:42:38,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:42:38,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:42:38,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:42:38,761 INFO L87 Difference]: Start difference. First operand 76 states and 123 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:39,165 INFO L93 Difference]: Finished difference Result 179 states and 301 transitions. [2024-11-09 05:42:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:42:39,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 05:42:39,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:39,169 INFO L225 Difference]: With dead ends: 179 [2024-11-09 05:42:39,169 INFO L226 Difference]: Without dead ends: 149 [2024-11-09 05:42:39,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:42:39,173 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 120 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:39,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 429 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:42:39,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-09 05:42:39,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 76. [2024-11-09 05:42:39,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.64) internal successors, (123), 75 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 123 transitions. [2024-11-09 05:42:39,190 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 123 transitions. Word has length 14 [2024-11-09 05:42:39,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:39,190 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 123 transitions. [2024-11-09 05:42:39,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 123 transitions. [2024-11-09 05:42:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 05:42:39,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:39,192 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:39,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-09 05:42:39,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:39,393 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:39,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:39,394 INFO L85 PathProgramCache]: Analyzing trace with hash -155496326, now seen corresponding path program 1 times [2024-11-09 05:42:39,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:39,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171203810] [2024-11-09 05:42:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:39,395 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 [2024-11-09 05:42:39,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:39,398 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:39,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:39,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:42:39,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:39,529 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:42:39,529 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:42:39,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171203810] [2024-11-09 05:42:39,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171203810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:39,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:39,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:42:39,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069060595] [2024-11-09 05:42:39,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:39,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:42:39,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:42:39,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:42:39,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:42:39,541 INFO L87 Difference]: Start difference. First operand 76 states and 123 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:39,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:39,793 INFO L93 Difference]: Finished difference Result 192 states and 312 transitions. [2024-11-09 05:42:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:42:39,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 05:42:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:39,795 INFO L225 Difference]: With dead ends: 192 [2024-11-09 05:42:39,795 INFO L226 Difference]: Without dead ends: 162 [2024-11-09 05:42:39,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:42:39,797 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 169 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:39,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 536 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:42:39,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-09 05:42:39,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 89. [2024-11-09 05:42:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.5227272727272727) internal successors, (134), 88 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) [2024-11-09 05:42:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 134 transitions. [2024-11-09 05:42:39,821 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 134 transitions. Word has length 14 [2024-11-09 05:42:39,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:39,823 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 134 transitions. [2024-11-09 05:42:39,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 134 transitions. [2024-11-09 05:42:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 05:42:39,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:39,825 INFO L215 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] [2024-11-09 05:42:39,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:40,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:40,028 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:40,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:40,028 INFO L85 PathProgramCache]: Analyzing trace with hash 853456020, now seen corresponding path program 1 times [2024-11-09 05:42:40,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:40,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178013575] [2024-11-09 05:42:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:40,029 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 [2024-11-09 05:42:40,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:40,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:40,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:40,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:42:40,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:40,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:42:40,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:42:40,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178013575] [2024-11-09 05:42:40,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178013575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:40,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:40,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:42:40,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088754818] [2024-11-09 05:42:40,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:40,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:42:40,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:42:40,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:42:40,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:42:40,158 INFO L87 Difference]: Start difference. First operand 89 states and 134 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) [2024-11-09 05:42:40,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:40,268 INFO L93 Difference]: Finished difference Result 234 states and 353 transitions. [2024-11-09 05:42:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:42:40,269 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 26 [2024-11-09 05:42:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:40,271 INFO L225 Difference]: With dead ends: 234 [2024-11-09 05:42:40,271 INFO L226 Difference]: Without dead ends: 164 [2024-11-09 05:42:40,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:42:40,273 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 71 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:40,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 141 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:42:40,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-09 05:42:40,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 101. [2024-11-09 05:42:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.49) internal successors, (149), 100 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) [2024-11-09 05:42:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 149 transitions. [2024-11-09 05:42:40,287 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 149 transitions. Word has length 26 [2024-11-09 05:42:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:40,288 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 149 transitions. [2024-11-09 05:42:40,288 INFO L472 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) [2024-11-09 05:42:40,288 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 149 transitions. [2024-11-09 05:42:40,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 05:42:40,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:40,290 INFO L215 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] [2024-11-09 05:42:40,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:40,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:40,491 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:40,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:40,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2036495402, now seen corresponding path program 1 times [2024-11-09 05:42:40,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:40,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776355302] [2024-11-09 05:42:40,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:40,493 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 [2024-11-09 05:42:40,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:40,494 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:40,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:40,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:42:40,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:42:40,569 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:42:40,570 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:42:40,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776355302] [2024-11-09 05:42:40,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776355302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:40,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:40,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:42:40,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825906105] [2024-11-09 05:42:40,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:40,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:42:40,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:42:40,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:42:40,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:40,572 INFO L87 Difference]: Start difference. First operand 101 states and 149 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2024-11-09 05:42:40,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:40,587 INFO L93 Difference]: Finished difference Result 173 states and 258 transitions. [2024-11-09 05:42:40,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:42:40,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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 [2024-11-09 05:42:40,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:40,589 INFO L225 Difference]: With dead ends: 173 [2024-11-09 05:42:40,589 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 05:42:40,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:42:40,590 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 58 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 64 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 [2024-11-09 05:42:40,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 64 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:42:40,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 05:42:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-09 05:42:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.4767441860465116) internal successors, (127), 86 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) [2024-11-09 05:42:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 127 transitions. [2024-11-09 05:42:40,607 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 127 transitions. Word has length 27 [2024-11-09 05:42:40,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:40,607 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 127 transitions. [2024-11-09 05:42:40,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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) [2024-11-09 05:42:40,607 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 127 transitions. [2024-11-09 05:42:40,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 05:42:40,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:40,608 INFO L215 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, 1] [2024-11-09 05:42:40,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:42:40,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:40,815 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:40,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:40,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1608181344, now seen corresponding path program 1 times [2024-11-09 05:42:40,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:40,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966767202] [2024-11-09 05:42:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:40,816 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 [2024-11-09 05:42:40,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:40,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:40,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:40,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:42:40,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:41,024 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:42:41,024 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:42:41,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966767202] [2024-11-09 05:42:41,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966767202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:41,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:42:41,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:42:41,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743113986] [2024-11-09 05:42:41,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:41,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:42:41,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:42:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:42:41,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:42:41,027 INFO L87 Difference]: Start difference. First operand 87 states and 127 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:41,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:41,210 INFO L93 Difference]: Finished difference Result 185 states and 283 transitions. [2024-11-09 05:42:41,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:42:41,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-09 05:42:41,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:41,212 INFO L225 Difference]: With dead ends: 185 [2024-11-09 05:42:41,212 INFO L226 Difference]: Without dead ends: 142 [2024-11-09 05:42:41,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:42:41,214 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 64 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:41,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 104 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:42:41,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-09 05:42:41,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2024-11-09 05:42:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4357142857142857) internal successors, (201), 140 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 201 transitions. [2024-11-09 05:42:41,238 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 201 transitions. Word has length 30 [2024-11-09 05:42:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:41,238 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 201 transitions. [2024-11-09 05:42:41,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 201 transitions. [2024-11-09 05:42:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 05:42:41,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:41,244 INFO L215 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, 1, 1] [2024-11-09 05:42:41,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:41,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:41,445 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:41,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:41,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1528650929, now seen corresponding path program 1 times [2024-11-09 05:42:41,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:41,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248715368] [2024-11-09 05:42:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:41,447 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 [2024-11-09 05:42:41,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:41,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:41,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:41,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:42:41,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:41,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:41,782 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:42:41,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248715368] [2024-11-09 05:42:41,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248715368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:41,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1260912913] [2024-11-09 05:42:41,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:41,783 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:42:41,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:42:41,786 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:42:41,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-09 05:42:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:41,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:42:41,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:41,909 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:42:41,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1260912913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:41,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:42:41,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 11 [2024-11-09 05:42:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105717371] [2024-11-09 05:42:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:41,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:42:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:42:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:42:41,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:42:41,913 INFO L87 Difference]: Start difference. First operand 141 states and 201 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:41,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:41,943 INFO L93 Difference]: Finished difference Result 193 states and 276 transitions. [2024-11-09 05:42:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:42:41,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-09 05:42:41,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:41,953 INFO L225 Difference]: With dead ends: 193 [2024-11-09 05:42:41,953 INFO L226 Difference]: Without dead ends: 181 [2024-11-09 05:42:41,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:42:41,955 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 5 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:41,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 118 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:42:41,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-09 05:42:41,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2024-11-09 05:42:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.4219653179190752) internal successors, (246), 173 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 246 transitions. [2024-11-09 05:42:41,975 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 246 transitions. Word has length 31 [2024-11-09 05:42:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:41,976 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 246 transitions. [2024-11-09 05:42:41,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 246 transitions. [2024-11-09 05:42:41,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 05:42:41,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:41,979 INFO L215 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, 1, 1] [2024-11-09 05:42:41,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-09 05:42:42,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:42,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:42,383 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:42,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:42,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1786816367, now seen corresponding path program 1 times [2024-11-09 05:42:42,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:42,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329885154] [2024-11-09 05:42:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:42,384 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 [2024-11-09 05:42:42,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:42,386 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:42,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:42,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:42:42,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:42,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:42,665 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:42:42,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329885154] [2024-11-09 05:42:42,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329885154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:42,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [876333620] [2024-11-09 05:42:42,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:42,666 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:42:42,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:42:42,669 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:42:42,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-09 05:42:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:42,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:42:42,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:42,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:42,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [876333620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:42,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843463481] [2024-11-09 05:42:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:42,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:42,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:42,946 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:42,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 05:42:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:43,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:42:43,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:43,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:43,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843463481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:43,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:42:43,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 4, 4] total 14 [2024-11-09 05:42:43,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650996057] [2024-11-09 05:42:43,182 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:42:43,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 05:42:43,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:42:43,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 05:42:43,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:42:43,184 INFO L87 Difference]: Start difference. First operand 174 states and 246 transitions. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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) [2024-11-09 05:42:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:45,110 INFO L93 Difference]: Finished difference Result 857 states and 1389 transitions. [2024-11-09 05:42:45,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-09 05:42:45,111 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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) Word has length 31 [2024-11-09 05:42:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:45,115 INFO L225 Difference]: With dead ends: 857 [2024-11-09 05:42:45,116 INFO L226 Difference]: Without dead ends: 704 [2024-11-09 05:42:45,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=456, Invalid=1104, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 05:42:45,121 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 988 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:45,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 174 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 05:42:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2024-11-09 05:42:45,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 603. [2024-11-09 05:42:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 1.5249169435215948) internal successors, (918), 602 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 918 transitions. [2024-11-09 05:42:45,161 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 918 transitions. Word has length 31 [2024-11-09 05:42:45,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:45,162 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 918 transitions. [2024-11-09 05:42:45,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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) [2024-11-09 05:42:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 918 transitions. [2024-11-09 05:42:45,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 05:42:45,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:45,168 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:42:45,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-09 05:42:45,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 05:42:45,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 05:42:45,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:45,775 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:45,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:45,775 INFO L85 PathProgramCache]: Analyzing trace with hash -537661154, now seen corresponding path program 1 times [2024-11-09 05:42:45,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:45,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437193107] [2024-11-09 05:42:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:45,776 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 [2024-11-09 05:42:45,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:45,779 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:45,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:45,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:42:45,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:42:45,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:42:46,050 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:42:46,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437193107] [2024-11-09 05:42:46,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437193107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:46,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2101188799] [2024-11-09 05:42:46,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:46,051 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:42:46,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:42:46,054 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:42:46,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-09 05:42:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:46,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:42:46,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:42:46,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:42:46,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2101188799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:46,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060964852] [2024-11-09 05:42:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:46,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:46,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:46,346 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:46,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 05:42:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:46,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:42:46,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 05:42:46,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:42:46,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060964852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:46,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 05:42:46,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 9 [2024-11-09 05:42:46,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138748665] [2024-11-09 05:42:46,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:46,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:42:46,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:42:46,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:42:46,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:42:46,469 INFO L87 Difference]: Start difference. First operand 603 states and 918 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) [2024-11-09 05:42:46,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:46,614 INFO L93 Difference]: Finished difference Result 1372 states and 2155 transitions. [2024-11-09 05:42:46,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:42:46,615 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 53 [2024-11-09 05:42:46,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:46,619 INFO L225 Difference]: With dead ends: 1372 [2024-11-09 05:42:46,619 INFO L226 Difference]: Without dead ends: 766 [2024-11-09 05:42:46,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:42:46,621 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 33 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:46,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 61 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:42:46,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2024-11-09 05:42:46,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 622. [2024-11-09 05:42:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 1.463768115942029) internal successors, (909), 621 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 909 transitions. [2024-11-09 05:42:46,655 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 909 transitions. Word has length 53 [2024-11-09 05:42:46,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:46,655 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 909 transitions. [2024-11-09 05:42:46,656 INFO L472 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) [2024-11-09 05:42:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 909 transitions. [2024-11-09 05:42:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 05:42:46,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:46,658 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1] [2024-11-09 05:42:46,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2024-11-09 05:42:46,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:47,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 05:42:47,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:47,261 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:47,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:47,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2058166106, now seen corresponding path program 1 times [2024-11-09 05:42:47,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:47,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068834809] [2024-11-09 05:42:47,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:47,262 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 [2024-11-09 05:42:47,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:47,263 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:47,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:47,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:42:47,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 05:42:47,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 05:42:47,573 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:42:47,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068834809] [2024-11-09 05:42:47,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068834809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:47,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1676752489] [2024-11-09 05:42:47,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:47,574 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:42:47,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:42:47,577 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:42:47,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-09 05:42:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:47,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 05:42:47,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:42:47,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:42:47,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1676752489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:47,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155480670] [2024-11-09 05:42:47,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:47,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:47,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:47,984 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:47,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 05:42:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:48,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:42:48,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 05:42:48,121 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:42:48,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155480670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:42:48,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 05:42:48,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6, 8, 5] total 18 [2024-11-09 05:42:48,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465742909] [2024-11-09 05:42:48,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:42:48,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:42:48,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:42:48,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:42:48,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:42:48,127 INFO L87 Difference]: Start difference. First operand 622 states and 909 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:48,252 INFO L93 Difference]: Finished difference Result 1716 states and 2495 transitions. [2024-11-09 05:42:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:42:48,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 [2024-11-09 05:42:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:48,261 INFO L225 Difference]: With dead ends: 1716 [2024-11-09 05:42:48,261 INFO L226 Difference]: Without dead ends: 1121 [2024-11-09 05:42:48,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 326 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:42:48,263 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 28 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:48,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 163 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:42:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2024-11-09 05:42:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 881. [2024-11-09 05:42:48,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 1.4761363636363636) internal successors, (1299), 880 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:48,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1299 transitions. [2024-11-09 05:42:48,329 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1299 transitions. Word has length 70 [2024-11-09 05:42:48,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:48,330 INFO L471 AbstractCegarLoop]: Abstraction has 881 states and 1299 transitions. [2024-11-09 05:42:48,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:48,330 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1299 transitions. [2024-11-09 05:42:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 05:42:48,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:48,332 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1] [2024-11-09 05:42:48,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 05:42:48,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:42:48,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2024-11-09 05:42:48,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:42:48,937 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:48,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:48,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1996126492, now seen corresponding path program 2 times [2024-11-09 05:42:48,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:48,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363462844] [2024-11-09 05:42:48,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:42:48,939 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 [2024-11-09 05:42:48,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:48,942 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:48,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:49,009 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:42:49,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:42:49,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:42:49,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 05:42:49,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 05:42:49,251 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:42:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363462844] [2024-11-09 05:42:49,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363462844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:49,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2035782070] [2024-11-09 05:42:49,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:42:49,252 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:42:49,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:42:49,255 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:42:49,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-09 05:42:49,384 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:42:49,384 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:42:49,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 05:42:49,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:42:49,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:42:49,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2035782070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:49,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73601184] [2024-11-09 05:42:49,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:42:49,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:49,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:42:49,700 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:42:49,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 05:42:49,786 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:42:49,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:42:49,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:42:49,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 48 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:42:50,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:42:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:42:50,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73601184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:42:50,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:42:50,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 5, 6, 8] total 26 [2024-11-09 05:42:50,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339025287] [2024-11-09 05:42:50,471 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:42:50,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 05:42:50,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:42:50,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 05:42:50,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2024-11-09 05:42:50,474 INFO L87 Difference]: Start difference. First operand 881 states and 1299 transitions. Second operand has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 26 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:59,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:42:59,030 INFO L93 Difference]: Finished difference Result 1940 states and 2805 transitions. [2024-11-09 05:42:59,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2024-11-09 05:42:59,031 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 26 states have internal predecessors, (241), 0 states have call successors, (0), 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 [2024-11-09 05:42:59,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:42:59,034 INFO L225 Difference]: With dead ends: 1940 [2024-11-09 05:42:59,034 INFO L226 Difference]: Without dead ends: 1085 [2024-11-09 05:42:59,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 390 SyntacticMatches, 3 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13052 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=4507, Invalid=29533, Unknown=0, NotChecked=0, Total=34040 [2024-11-09 05:42:59,047 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 1533 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 4091 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 4216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 4091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:42:59,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 316 Invalid, 4216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 4091 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 05:42:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2024-11-09 05:42:59,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 682. [2024-11-09 05:42:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.3392070484581498) internal successors, (912), 681 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:59,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 912 transitions. [2024-11-09 05:42:59,086 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 912 transitions. Word has length 70 [2024-11-09 05:42:59,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:42:59,086 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 912 transitions. [2024-11-09 05:42:59,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 26 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:42:59,087 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 912 transitions. [2024-11-09 05:42:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 05:42:59,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:42:59,088 INFO L215 NwaCegarLoop]: trace histogram [4, 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] [2024-11-09 05:42:59,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 05:42:59,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2024-11-09 05:42:59,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 05:42:59,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:42:59,691 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:42:59,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:42:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash 367015150, now seen corresponding path program 1 times [2024-11-09 05:42:59,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:42:59,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016020443] [2024-11-09 05:42:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:42:59,693 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 [2024-11-09 05:42:59,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:42:59,696 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:42:59,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:42:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:42:59,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:42:59,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:42:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 70 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:42:59,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:43:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:43:00,022 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:43:00,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016020443] [2024-11-09 05:43:00,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016020443] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:43:00,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2081533820] [2024-11-09 05:43:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:00,023 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:43:00,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:43:00,026 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:43:00,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-09 05:43:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:00,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:43:00,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:43:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 70 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:43:00,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:43:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:43:00,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2081533820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:43:00,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011436614] [2024-11-09 05:43:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:00,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:43:00,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:43:00,343 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:43:00,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 05:43:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:00,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:43:00,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:43:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 70 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:43:00,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:43:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:43:00,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011436614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:43:00,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:43:00,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6, 5, 6, 5] total 9 [2024-11-09 05:43:00,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484703939] [2024-11-09 05:43:00,629 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:43:00,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 05:43:00,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:43:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 05:43:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:43:00,631 INFO L87 Difference]: Start difference. First operand 682 states and 912 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:43:00,949 INFO L93 Difference]: Finished difference Result 1514 states and 1968 transitions. [2024-11-09 05:43:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:43:00,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 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 [2024-11-09 05:43:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:43:00,953 INFO L225 Difference]: With dead ends: 1514 [2024-11-09 05:43:00,953 INFO L226 Difference]: Without dead ends: 859 [2024-11-09 05:43:00,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:43:00,955 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 144 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:43:00,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 295 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:43:00,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-11-09 05:43:00,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 565. [2024-11-09 05:43:00,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.297872340425532) internal successors, (732), 564 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:00,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 732 transitions. [2024-11-09 05:43:00,993 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 732 transitions. Word has length 74 [2024-11-09 05:43:00,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:43:00,993 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 732 transitions. [2024-11-09 05:43:00,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:00,994 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 732 transitions. [2024-11-09 05:43:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 05:43:00,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:43:00,995 INFO L215 NwaCegarLoop]: trace histogram [4, 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] [2024-11-09 05:43:00,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2024-11-09 05:43:01,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 05:43:01,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:43:01,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:43:01,596 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:43:01,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:43:01,597 INFO L85 PathProgramCache]: Analyzing trace with hash 429054764, now seen corresponding path program 2 times [2024-11-09 05:43:01,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:43:01,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961204803] [2024-11-09 05:43:01,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:43:01,597 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 [2024-11-09 05:43:01,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:43:01,601 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:43:01,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:43:01,662 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:43:01,662 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:43:01,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 05:43:01,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:43:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:43:05,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:43:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:43:08,286 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:43:08,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961204803] [2024-11-09 05:43:08,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961204803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:43:08,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1542955482] [2024-11-09 05:43:08,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:43:08,286 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:43:08,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:43:08,287 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:43:08,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-09 05:43:08,404 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:43:08,404 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:43:08,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 05:43:08,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:43:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:43:10,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:43:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:43:11,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1542955482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:43:11,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129763432] [2024-11-09 05:43:11,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:43:11,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:43:11,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:43:11,342 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:43:11,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 05:43:11,418 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:43:11,418 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:43:11,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 05:43:11,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:43:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:43:13,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:43:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:43:15,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129763432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:43:15,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:43:15,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23, 23, 23, 24] total 49 [2024-11-09 05:43:15,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334346094] [2024-11-09 05:43:15,199 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:43:15,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 05:43:15,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:43:15,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 05:43:15,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2186, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 05:43:15,202 INFO L87 Difference]: Start difference. First operand 565 states and 732 transitions. Second operand has 49 states, 49 states have (on average 3.4285714285714284) internal successors, (168), 49 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:34,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:43:34,665 INFO L93 Difference]: Finished difference Result 1318 states and 1636 transitions. [2024-11-09 05:43:34,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-09 05:43:34,666 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4285714285714284) internal successors, (168), 49 states have internal predecessors, (168), 0 states have call successors, (0), 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 [2024-11-09 05:43:34,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:43:34,668 INFO L225 Difference]: With dead ends: 1318 [2024-11-09 05:43:34,668 INFO L226 Difference]: Without dead ends: 1203 [2024-11-09 05:43:34,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3333 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=2584, Invalid=14186, Unknown=0, NotChecked=0, Total=16770 [2024-11-09 05:43:34,673 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 1539 mSDsluCounter, 6618 mSDsCounter, 0 mSdLazyCounter, 5144 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 6906 SdHoareTripleChecker+Invalid, 5237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 5144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:43:34,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 6906 Invalid, 5237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 5144 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-09 05:43:34,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2024-11-09 05:43:34,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 782. [2024-11-09 05:43:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 1.2855313700384123) internal successors, (1004), 781 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1004 transitions. [2024-11-09 05:43:34,748 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1004 transitions. Word has length 74 [2024-11-09 05:43:34,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:43:34,748 INFO L471 AbstractCegarLoop]: Abstraction has 782 states and 1004 transitions. [2024-11-09 05:43:34,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4285714285714284) internal successors, (168), 49 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:43:34,749 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1004 transitions. [2024-11-09 05:43:34,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-09 05:43:34,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:43:34,750 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1] [2024-11-09 05:43:34,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 05:43:34,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-09 05:43:35,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2024-11-09 05:43:35,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:43:35,352 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:43:35,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:43:35,352 INFO L85 PathProgramCache]: Analyzing trace with hash 377430876, now seen corresponding path program 1 times [2024-11-09 05:43:35,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:43:35,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59595028] [2024-11-09 05:43:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:35,353 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 [2024-11-09 05:43:35,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:43:35,356 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:43:35,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 (29)] Waiting until timeout for monitored process [2024-11-09 05:43:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:35,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 05:43:35,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:43:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:43:39,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:43:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:43:43,050 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:43:43,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59595028] [2024-11-09 05:43:43,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59595028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:43:43,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1531836988] [2024-11-09 05:43:43,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:43,051 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:43:43,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:43:43,055 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:43:43,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-09 05:43:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:43,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 05:43:43,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:43:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:43:46,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:43:47,315 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:43:47,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1531836988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:43:47,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675922972] [2024-11-09 05:43:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:47,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:43:47,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:43:47,318 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:43:47,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 05:43:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:47,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 05:43:47,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:43:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:43:50,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:43:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:43:54,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675922972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:43:54,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:43:54,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24, 24, 24, 25] total 66 [2024-11-09 05:43:54,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494414632] [2024-11-09 05:43:54,643 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:43:54,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-09 05:43:54,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:43:54,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-09 05:43:54,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=3997, Unknown=0, NotChecked=0, Total=4290 [2024-11-09 05:43:54,646 INFO L87 Difference]: Start difference. First operand 782 states and 1004 transitions. Second operand has 66 states, 66 states have (on average 3.303030303030303) internal successors, (218), 66 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:46:16,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:46:16,191 INFO L93 Difference]: Finished difference Result 3293 states and 4029 transitions. [2024-11-09 05:46:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 309 states. [2024-11-09 05:46:16,192 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.303030303030303) internal successors, (218), 66 states have internal predecessors, (218), 0 states have call successors, (0), 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 [2024-11-09 05:46:16,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:46:16,199 INFO L225 Difference]: With dead ends: 3293 [2024-11-09 05:46:16,199 INFO L226 Difference]: Without dead ends: 3149 [2024-11-09 05:46:16,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 369 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48089 ImplicationChecksByTransitivity, 124.6s TimeCoverageRelationStatistics Valid=17813, Invalid=119457, Unknown=0, NotChecked=0, Total=137270 [2024-11-09 05:46:16,214 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 2914 mSDsluCounter, 7854 mSDsCounter, 0 mSdLazyCounter, 17352 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 8180 SdHoareTripleChecker+Invalid, 17670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 17352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:46:16,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2914 Valid, 8180 Invalid, 17670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [318 Valid, 17352 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time] [2024-11-09 05:46:16,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2024-11-09 05:46:16,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 1489. [2024-11-09 05:46:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1488 states have (on average 1.2681451612903225) internal successors, (1887), 1488 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:46:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1887 transitions. [2024-11-09 05:46:16,389 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1887 transitions. Word has length 78 [2024-11-09 05:46:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:46:16,390 INFO L471 AbstractCegarLoop]: Abstraction has 1489 states and 1887 transitions. [2024-11-09 05:46:16,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.303030303030303) internal successors, (218), 66 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:46:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1887 transitions. [2024-11-09 05:46:16,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-09 05:46:16,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:46:16,392 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1] [2024-11-09 05:46:16,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2024-11-09 05:46:16,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 (29)] Forceful destruction successful, exit code 0 [2024-11-09 05:46:16,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 05:46:16,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:46:16,993 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:46:16,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:46:16,994 INFO L85 PathProgramCache]: Analyzing trace with hash -560647336, now seen corresponding path program 1 times [2024-11-09 05:46:16,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:46:16,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160572400] [2024-11-09 05:46:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:46:16,994 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 [2024-11-09 05:46:16,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:46:16,996 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:46:16,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 (32)] Waiting until timeout for monitored process [2024-11-09 05:46:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:46:17,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 05:46:17,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:46:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:46:21,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:46:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:46:24,317 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:46:24,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160572400] [2024-11-09 05:46:24,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160572400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:46:24,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2091516947] [2024-11-09 05:46:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:46:24,318 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:46:24,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:46:24,319 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:46:24,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-09 05:46:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:46:24,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 05:46:24,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:46:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:46:27,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:46:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:46:28,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2091516947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:46:28,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112918194] [2024-11-09 05:46:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:46:28,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:46:28,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:46:28,577 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:46:28,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 05:46:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:46:28,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 05:46:28,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:46:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:46:31,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:46:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:46:33,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112918194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:46:33,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:46:33,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24, 24, 24, 25] total 57 [2024-11-09 05:46:33,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721176794] [2024-11-09 05:46:33,442 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:46:33,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-09 05:46:33,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:46:33,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-09 05:46:33,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2990, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 05:46:33,444 INFO L87 Difference]: Start difference. First operand 1489 states and 1887 transitions. Second operand has 57 states, 57 states have (on average 3.3684210526315788) internal successors, (192), 57 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:48:02,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:48:02,797 INFO L93 Difference]: Finished difference Result 3885 states and 4796 transitions. [2024-11-09 05:48:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2024-11-09 05:48:02,798 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.3684210526315788) internal successors, (192), 57 states have internal predecessors, (192), 0 states have call successors, (0), 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 [2024-11-09 05:48:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:48:02,804 INFO L225 Difference]: With dead ends: 3885 [2024-11-09 05:48:02,804 INFO L226 Difference]: Without dead ends: 3046 [2024-11-09 05:48:02,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23646 ImplicationChecksByTransitivity, 75.7s TimeCoverageRelationStatistics Valid=7592, Invalid=63430, Unknown=0, NotChecked=0, Total=71022 [2024-11-09 05:48:02,808 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 1840 mSDsluCounter, 3491 mSDsCounter, 0 mSdLazyCounter, 12869 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 3658 SdHoareTripleChecker+Invalid, 13047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 12869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:48:02,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 3658 Invalid, 13047 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [178 Valid, 12869 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2024-11-09 05:48:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2024-11-09 05:48:03,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 1724. [2024-11-09 05:48:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 1.2629135229251305) internal successors, (2176), 1723 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:48:03,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2176 transitions. [2024-11-09 05:48:03,033 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2176 transitions. Word has length 78 [2024-11-09 05:48:03,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:48:03,034 INFO L471 AbstractCegarLoop]: Abstraction has 1724 states and 2176 transitions. [2024-11-09 05:48:03,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.3684210526315788) internal successors, (192), 57 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:48:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2176 transitions. [2024-11-09 05:48:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 05:48:03,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:48:03,037 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1] [2024-11-09 05:48:03,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-09 05:48:03,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 (32)] Forceful destruction successful, exit code 0 [2024-11-09 05:48:03,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2024-11-09 05:48:03,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:48:03,638 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:48:03,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:48:03,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1002262490, now seen corresponding path program 1 times [2024-11-09 05:48:03,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:48:03,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947169662] [2024-11-09 05:48:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:48:03,640 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 [2024-11-09 05:48:03,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:48:03,643 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:48:03,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 (35)] Waiting until timeout for monitored process [2024-11-09 05:48:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:48:03,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 05:48:03,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:48:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:08,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:48:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:13,763 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:48:13,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947169662] [2024-11-09 05:48:13,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947169662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:48:13,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [47442564] [2024-11-09 05:48:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:48:13,764 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:48:13,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:48:13,765 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:48:13,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-09 05:48:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:48:13,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 05:48:13,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:48:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:17,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:48:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:21,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [47442564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:48:21,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003077691] [2024-11-09 05:48:21,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:48:21,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:48:21,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:48:21,766 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:48:21,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-09 05:48:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:48:21,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 05:48:21,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:48:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:24,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:48:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:48:26,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003077691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:48:26,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:48:26,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 26, 26] total 71 [2024-11-09 05:48:26,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739801992] [2024-11-09 05:48:26,163 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:48:26,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-09 05:48:26,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:48:26,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-09 05:48:26,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=4650, Unknown=0, NotChecked=0, Total=4970 [2024-11-09 05:48:26,165 INFO L87 Difference]: Start difference. First operand 1724 states and 2176 transitions. Second operand has 71 states, 71 states have (on average 3.1971830985915495) internal successors, (227), 71 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:14,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:52:14,134 INFO L93 Difference]: Finished difference Result 6065 states and 7398 transitions. [2024-11-09 05:52:14,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 396 states. [2024-11-09 05:52:14,135 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.1971830985915495) internal successors, (227), 71 states have internal predecessors, (227), 0 states have call successors, (0), 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 81 [2024-11-09 05:52:14,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:52:14,145 INFO L225 Difference]: With dead ends: 6065 [2024-11-09 05:52:14,145 INFO L226 Difference]: Without dead ends: 5888 [2024-11-09 05:52:14,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 409 SyntacticMatches, 2 SemanticMatches, 461 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81980 ImplicationChecksByTransitivity, 198.9s TimeCoverageRelationStatistics Valid=22665, Invalid=191241, Unknown=0, NotChecked=0, Total=213906 [2024-11-09 05:52:14,154 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 3835 mSDsluCounter, 8506 mSDsCounter, 0 mSdLazyCounter, 23231 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3835 SdHoareTripleChecker+Valid, 8791 SdHoareTripleChecker+Invalid, 23776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 23231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:52:14,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3835 Valid, 8791 Invalid, 23776 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [545 Valid, 23231 Invalid, 0 Unknown, 0 Unchecked, 36.3s Time] [2024-11-09 05:52:14,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2024-11-09 05:52:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 2597. [2024-11-09 05:52:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2597 states, 2596 states have (on average 1.257704160246533) internal successors, (3265), 2596 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 3265 transitions. [2024-11-09 05:52:14,592 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 3265 transitions. Word has length 81 [2024-11-09 05:52:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:52:14,592 INFO L471 AbstractCegarLoop]: Abstraction has 2597 states and 3265 transitions. [2024-11-09 05:52:14,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.1971830985915495) internal successors, (227), 71 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 3265 transitions. [2024-11-09 05:52:14,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 05:52:14,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:14,595 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1] [2024-11-09 05:52:14,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2024-11-09 05:52:14,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-09 05:52:14,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 (35)] Ended with exit code 0 [2024-11-09 05:52:15,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:52:15,196 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:52:15,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:15,197 INFO L85 PathProgramCache]: Analyzing trace with hash -985085738, now seen corresponding path program 2 times [2024-11-09 05:52:15,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:52:15,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030337754] [2024-11-09 05:52:15,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:52:15,197 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 [2024-11-09 05:52:15,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:52:15,199 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:52:15,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 (38)] Waiting until timeout for monitored process [2024-11-09 05:52:15,267 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:52:15,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:52:15,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 05:52:15,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:52:20,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:52:24,487 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:52:24,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030337754] [2024-11-09 05:52:24,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030337754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:52:24,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1247157995] [2024-11-09 05:52:24,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:52:24,488 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:52:24,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:52:24,489 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:52:24,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-09 05:52:24,620 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:52:24,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:52:24,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 05:52:24,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:52:27,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:52:28,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1247157995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:52:28,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87410387] [2024-11-09 05:52:28,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:52:28,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:52:28,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:52:28,806 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:52:28,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-09 05:52:28,898 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:52:28,899 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:52:28,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 05:52:28,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:52:32,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:52:33,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87410387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:52:33,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:52:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 26, 26] total 50 [2024-11-09 05:52:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502793031] [2024-11-09 05:52:33,067 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:52:33,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-09 05:52:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:52:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-09 05:52:33,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2268, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 05:52:33,069 INFO L87 Difference]: Start difference. First operand 2597 states and 3265 transitions. Second operand has 50 states, 50 states have (on average 3.2) internal successors, (160), 50 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:54:09,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:54:09,924 INFO L93 Difference]: Finished difference Result 6495 states and 7982 transitions. [2024-11-09 05:54:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2024-11-09 05:54:09,925 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.2) internal successors, (160), 50 states have internal predecessors, (160), 0 states have call successors, (0), 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 81 [2024-11-09 05:54:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:54:09,934 INFO L225 Difference]: With dead ends: 6495 [2024-11-09 05:54:09,934 INFO L226 Difference]: Without dead ends: 5446 [2024-11-09 05:54:09,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26010 ImplicationChecksByTransitivity, 86.9s TimeCoverageRelationStatistics Valid=8786, Invalid=69334, Unknown=0, NotChecked=0, Total=78120 [2024-11-09 05:54:09,939 INFO L432 NwaCegarLoop]: 579 mSDtfsCounter, 1933 mSDsluCounter, 13148 mSDsCounter, 0 mSdLazyCounter, 9495 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 13727 SdHoareTripleChecker+Invalid, 9807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 9495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:54:09,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1933 Valid, 13727 Invalid, 9807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [312 Valid, 9495 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2024-11-09 05:54:09,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2024-11-09 05:54:10,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 3726. [2024-11-09 05:54:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3726 states, 3725 states have (on average 1.261208053691275) internal successors, (4698), 3725 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:54:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3726 states to 3726 states and 4698 transitions. [2024-11-09 05:54:10,394 INFO L78 Accepts]: Start accepts. Automaton has 3726 states and 4698 transitions. Word has length 81 [2024-11-09 05:54:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:54:10,394 INFO L471 AbstractCegarLoop]: Abstraction has 3726 states and 4698 transitions. [2024-11-09 05:54:10,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.2) internal successors, (160), 50 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:54:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3726 states and 4698 transitions. [2024-11-09 05:54:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 05:54:10,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:54:10,398 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1] [2024-11-09 05:54:10,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 (38)] Ended with exit code 0 [2024-11-09 05:54:10,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2024-11-09 05:54:10,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-09 05:54:10,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:54:10,999 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:54:10,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:54:10,999 INFO L85 PathProgramCache]: Analyzing trace with hash -367853098, now seen corresponding path program 3 times [2024-11-09 05:54:10,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:54:10,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320693079] [2024-11-09 05:54:11,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:54:11,000 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 [2024-11-09 05:54:11,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:54:11,001 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:54:11,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 (41)] Waiting until timeout for monitored process [2024-11-09 05:54:11,075 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 05:54:11,075 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:54:11,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 05:54:11,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:54:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:54:15,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:54:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:54:19,714 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:54:19,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320693079] [2024-11-09 05:54:19,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320693079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:54:19,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1211798892] [2024-11-09 05:54:19,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:54:19,715 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:54:19,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:54:19,716 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:54:19,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2024-11-09 05:54:19,854 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 05:54:19,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:54:19,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 05:54:19,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:54:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:54:24,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:54:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:54:25,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1211798892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:54:25,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797884787] [2024-11-09 05:54:25,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:54:25,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:54:25,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:54:25,724 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:54:25,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-09 05:54:25,817 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 05:54:25,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:54:25,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 05:54:25,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:54:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:54:28,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:54:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:54:29,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797884787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:54:29,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:54:29,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25, 25, 25, 25] total 63 [2024-11-09 05:54:29,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972911067] [2024-11-09 05:54:29,528 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:54:29,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-09 05:54:29,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:54:29,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-09 05:54:29,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=3666, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 05:54:29,529 INFO L87 Difference]: Start difference. First operand 3726 states and 4698 transitions. Second operand has 63 states, 63 states have (on average 3.3492063492063493) internal successors, (211), 63 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:56:13,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:56:13,080 INFO L93 Difference]: Finished difference Result 9009 states and 11164 transitions. [2024-11-09 05:56:13,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2024-11-09 05:56:13,081 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.3492063492063493) internal successors, (211), 63 states have internal predecessors, (211), 0 states have call successors, (0), 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 81 [2024-11-09 05:56:13,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:56:13,098 INFO L225 Difference]: With dead ends: 9009 [2024-11-09 05:56:13,098 INFO L226 Difference]: Without dead ends: 6829 [2024-11-09 05:56:13,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26443 ImplicationChecksByTransitivity, 92.6s TimeCoverageRelationStatistics Valid=9048, Invalid=69072, Unknown=0, NotChecked=0, Total=78120 [2024-11-09 05:56:13,104 INFO L432 NwaCegarLoop]: 573 mSDtfsCounter, 2131 mSDsluCounter, 15503 mSDsCounter, 0 mSdLazyCounter, 11232 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2131 SdHoareTripleChecker+Valid, 16076 SdHoareTripleChecker+Invalid, 11569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 11232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:56:13,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2131 Valid, 16076 Invalid, 11569 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [337 Valid, 11232 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2024-11-09 05:56:13,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6829 states. [2024-11-09 05:56:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6829 to 4881. [2024-11-09 05:56:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4881 states, 4880 states have (on average 1.260860655737705) internal successors, (6153), 4880 states have internal predecessors, (6153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:56:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4881 states to 4881 states and 6153 transitions. [2024-11-09 05:56:13,636 INFO L78 Accepts]: Start accepts. Automaton has 4881 states and 6153 transitions. Word has length 81 [2024-11-09 05:56:13,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:56:13,637 INFO L471 AbstractCegarLoop]: Abstraction has 4881 states and 6153 transitions. [2024-11-09 05:56:13,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.3492063492063493) internal successors, (211), 63 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:56:13,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4881 states and 6153 transitions. [2024-11-09 05:56:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 05:56:13,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:56:13,639 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1] [2024-11-09 05:56:13,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-09 05:56:13,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2024-11-09 05:56:14,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 (41)] Forceful destruction successful, exit code 0 [2024-11-09 05:56:14,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:56:14,240 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:56:14,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:56:14,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2054177479, now seen corresponding path program 1 times [2024-11-09 05:56:14,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:56:14,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5644612] [2024-11-09 05:56:14,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:56:14,241 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 [2024-11-09 05:56:14,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:56:14,243 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:56:14,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f5cfa44-0bbc-450d-91a0-607c2dc13c5b/bin/utaipan-verify-YMUCfTKeje/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 (44)] Waiting until timeout for monitored process [2024-11-09 05:56:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:56:14,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 05:56:14,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:56:18,774 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:56:18,774 INFO L311 TraceCheckSpWp]: Computing backward predicates...