./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 742ffe63db70127807dbc7584eb0c51633a9ed1be5f19fa1a247e43392d52dab --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:06:18,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:06:18,298 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-14 04:06:18,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:06:18,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:06:18,343 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:06:18,344 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:06:18,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:06:18,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:06:18,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:06:18,344 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:06:18,344 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:06:18,345 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:06:18,345 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:06:18,345 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:06:18,346 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:06:18,346 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:06:18,346 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:06:18,346 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:06:18,346 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:06:18,347 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:06:18,347 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:06:18,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:06:18,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:06:18,347 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:06:18,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:06:18,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:06:18,348 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:06:18,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:06:18,348 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:06:18,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:06:18,348 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:06:18,348 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 04:06:18,348 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:06:18,348 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:06:18,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:06:18,348 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:06:18,349 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:06:18,349 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:06:18,349 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:06:18,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:06:18,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:06:18,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:06:18,349 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:06:18,349 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:06:18,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:06:18,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:06:18,350 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:06:18,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:06:18,351 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E 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 ! overflow) ) 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 -> 742ffe63db70127807dbc7584eb0c51633a9ed1be5f19fa1a247e43392d52dab [2024-11-14 04:06:18,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:06:18,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:06:18,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:06:18,669 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:06:18,669 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:06:18,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i Unable to find full path for "g++" [2024-11-14 04:06:20,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:06:20,868 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:06:20,868 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/sv-benchmarks/c/list-simple/sll2n_append_unequal.i [2024-11-14 04:06:20,880 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/data/3e5037aaa/ae110134d3584885bb6981d264a48dba/FLAG7481c8d9c [2024-11-14 04:06:21,051 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/data/3e5037aaa/ae110134d3584885bb6981d264a48dba [2024-11-14 04:06:21,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:06:21,055 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:06:21,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:06:21,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:06:21,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:06:21,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2190d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21, skipping insertion in model container [2024-11-14 04:06:21,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:06:21,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:06:21,397 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:06:21,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:06:21,466 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:06:21,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21 WrapperNode [2024-11-14 04:06:21,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:06:21,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:06:21,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:06:21,472 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:06:21,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,524 INFO L138 Inliner]: procedures = 127, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 143 [2024-11-14 04:06:21,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:06:21,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:06:21,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:06:21,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:06:21,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,534 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,563 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:06:21,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:06:21,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:06:21,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:06:21,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21" (1/1) ... [2024-11-14 04:06:21,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:06:21,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:21,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:06:21,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:06:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:06:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:06:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-11-14 04:06:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-11-14 04:06:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:06:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:06:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:06:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 04:06:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 04:06:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:06:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 04:06:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:06:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:06:21,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:06:21,760 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:06:21,762 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:06:22,010 INFO L? ?]: Removed 58 outVars from TransFormulas that were not future-live. [2024-11-14 04:06:22,011 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:06:22,071 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:06:22,071 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-14 04:06:22,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:06:22 BoogieIcfgContainer [2024-11-14 04:06:22,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:06:22,075 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:06:22,075 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:06:22,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:06:22,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:06:21" (1/3) ... [2024-11-14 04:06:22,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f944fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:06:22, skipping insertion in model container [2024-11-14 04:06:22,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:21" (2/3) ... [2024-11-14 04:06:22,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f944fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:06:22, skipping insertion in model container [2024-11-14 04:06:22,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:06:22" (3/3) ... [2024-11-14 04:06:22,083 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_append_unequal.i [2024-11-14 04:06:22,099 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:06:22,100 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll2n_append_unequal.i that has 2 procedures, 42 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2024-11-14 04:06:22,150 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:06:22,163 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;@29995425, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:06:22,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-14 04:06:22,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 38 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:22,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 04:06:22,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:22,175 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:22,177 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:06:22,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:22,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1424839977, now seen corresponding path program 1 times [2024-11-14 04:06:22,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:22,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836803867] [2024-11-14 04:06:22,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:22,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:22,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836803867] [2024-11-14 04:06:22,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836803867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:06:22,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:06:22,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:06:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072168147] [2024-11-14 04:06:22,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:06:22,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:06:22,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:22,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:06:22,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:06:22,641 INFO L87 Difference]: Start difference. First operand has 42 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 38 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:06:22,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:22,729 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-11-14 04:06:22,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:06:22,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-11-14 04:06:22,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:22,739 INFO L225 Difference]: With dead ends: 83 [2024-11-14 04:06:22,739 INFO L226 Difference]: Without dead ends: 41 [2024-11-14 04:06:22,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:06:22,749 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:22,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 124 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:06:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-14 04:06:22,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-14 04:06:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:06:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-11-14 04:06:22,792 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 8 [2024-11-14 04:06:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:22,794 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-11-14 04:06:22,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:06:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-11-14 04:06:22,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 04:06:22,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:22,797 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-14 04:06:22,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:06:22,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:06:22,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:22,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1898800769, now seen corresponding path program 1 times [2024-11-14 04:06:22,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:22,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267836775] [2024-11-14 04:06:22,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:22,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:06:23,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:23,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267836775] [2024-11-14 04:06:23,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267836775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:06:23,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:06:23,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:06:23,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050113992] [2024-11-14 04:06:23,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:06:23,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:06:23,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:06:23,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:06:23,051 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:23,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:23,100 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-14 04:06:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:06:23,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-14 04:06:23,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:23,102 INFO L225 Difference]: With dead ends: 41 [2024-11-14 04:06:23,102 INFO L226 Difference]: Without dead ends: 40 [2024-11-14 04:06:23,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:06:23,104 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:23,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 95 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:06:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-14 04:06:23,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-14 04:06:23,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 35 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:06:23,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-11-14 04:06:23,112 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 16 [2024-11-14 04:06:23,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:23,113 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-11-14 04:06:23,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:23,113 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-11-14 04:06:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 04:06:23,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:23,116 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-14 04:06:23,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:06:23,116 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:06:23,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:23,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1266718259, now seen corresponding path program 1 times [2024-11-14 04:06:23,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:23,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568079305] [2024-11-14 04:06:23,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:23,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:06:23,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:23,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568079305] [2024-11-14 04:06:23,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568079305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:23,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606444110] [2024-11-14 04:06:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:23,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:23,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:23,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:23,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:06:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:23,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:06:23,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:06:23,604 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:06:23,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606444110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:06:23,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:06:23,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-14 04:06:23,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850692480] [2024-11-14 04:06:23,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:06:23,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:06:23,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:23,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:06:23,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:06:23,607 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:23,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:23,665 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-11-14 04:06:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:06:23,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-14 04:06:23,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:23,669 INFO L225 Difference]: With dead ends: 40 [2024-11-14 04:06:23,669 INFO L226 Difference]: Without dead ends: 39 [2024-11-14 04:06:23,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:06:23,670 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:23,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:06:23,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-14 04:06:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2024-11-14 04:06:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 31 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-11-14 04:06:23,678 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 17 [2024-11-14 04:06:23,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:23,680 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-11-14 04:06:23,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:23,681 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-11-14 04:06:23,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 04:06:23,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:23,681 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:23,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 04:06:23,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:23,882 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:06:23,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash -475610357, now seen corresponding path program 1 times [2024-11-14 04:06:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:23,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815887159] [2024-11-14 04:06:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:23,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:06:24,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:24,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815887159] [2024-11-14 04:06:24,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815887159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:24,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396961650] [2024-11-14 04:06:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:24,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:24,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:24,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:24,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:06:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:24,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:06:24,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:06:24,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:06:24,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396961650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:06:24,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:06:24,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-14 04:06:24,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459817991] [2024-11-14 04:06:24,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:06:24,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:06:24,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:24,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:06:24,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:06:24,249 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:06:24,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:24,265 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-11-14 04:06:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:06:24,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-14 04:06:24,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:24,268 INFO L225 Difference]: With dead ends: 35 [2024-11-14 04:06:24,268 INFO L226 Difference]: Without dead ends: 34 [2024-11-14 04:06:24,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:06:24,269 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:24,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 36 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:06:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-14 04:06:24,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-14 04:06:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 30 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:24,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-14 04:06:24,275 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 19 [2024-11-14 04:06:24,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:24,275 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-14 04:06:24,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:06:24,276 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-14 04:06:24,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-14 04:06:24,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:24,278 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:24,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 04:06:24,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:24,482 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:06:24,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:24,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1859019064, now seen corresponding path program 1 times [2024-11-14 04:06:24,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:24,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366598508] [2024-11-14 04:06:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:24,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:06:24,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:24,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366598508] [2024-11-14 04:06:24,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366598508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:24,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125730004] [2024-11-14 04:06:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:24,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:24,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:24,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:06:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:24,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:06:24,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:06:24,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:06:24,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125730004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:06:24,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:06:24,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-14 04:06:24,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837327852] [2024-11-14 04:06:24,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:06:24,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:06:24,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:24,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:06:24,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:06:24,835 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:06:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:24,854 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-11-14 04:06:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:06:24,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-14 04:06:24,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:24,856 INFO L225 Difference]: With dead ends: 34 [2024-11-14 04:06:24,857 INFO L226 Difference]: Without dead ends: 31 [2024-11-14 04:06:24,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:06:24,857 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:24,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 36 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:06:24,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-14 04:06:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-14 04:06:24,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-14 04:06:24,868 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2024-11-14 04:06:24,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:24,868 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-14 04:06:24,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:06:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-14 04:06:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 04:06:24,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:24,869 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:24,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 04:06:25,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:25,070 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:06:25,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:25,070 INFO L85 PathProgramCache]: Analyzing trace with hash 157620172, now seen corresponding path program 1 times [2024-11-14 04:06:25,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:25,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707767401] [2024-11-14 04:06:25,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:25,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:06:25,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:25,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707767401] [2024-11-14 04:06:25,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707767401] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:25,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45319390] [2024-11-14 04:06:25,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:25,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:25,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:25,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:25,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:06:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:25,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:06:25,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:25,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:06:25,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45319390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:25,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [378986783] [2024-11-14 04:06:25,459 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-14 04:06:25,459 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:06:25,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:06:25,466 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:06:25,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:06:27,394 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 114 for LOIs [2024-11-14 04:06:27,631 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:06:31,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [378986783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:06:31,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:06:31,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 5, 5] total 19 [2024-11-14 04:06:31,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321394475] [2024-11-14 04:06:31,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:06:31,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 04:06:31,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 04:06:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-11-14 04:06:31,514 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 14 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:33,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:06:33,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:33,970 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2024-11-14 04:06:33,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 04:06:33,971 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-14 04:06:33,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:33,972 INFO L225 Difference]: With dead ends: 46 [2024-11-14 04:06:33,972 INFO L226 Difference]: Without dead ends: 31 [2024-11-14 04:06:33,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-11-14 04:06:33,973 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:33,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 2 Unknown, 0 Unchecked, 2.4s Time] [2024-11-14 04:06:33,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-14 04:06:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-14 04:06:33,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.25) internal successors, (30), 27 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-14 04:06:33,980 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2024-11-14 04:06:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:33,980 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-14 04:06:33,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:06:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-14 04:06:33,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 04:06:33,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:33,982 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:34,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 04:06:34,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:34,186 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:06:34,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:34,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1826998347, now seen corresponding path program 1 times [2024-11-14 04:06:34,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:34,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036423020] [2024-11-14 04:06:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:34,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:06:34,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:34,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036423020] [2024-11-14 04:06:34,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036423020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:34,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464126542] [2024-11-14 04:06:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:34,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:34,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:34,305 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:34,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:06:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:34,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:06:34,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:06:34,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:34,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:06:34,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464126542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:34,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1317644213] [2024-11-14 04:06:34,529 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-14 04:06:34,529 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:06:34,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:06:34,530 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:06:34,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:06:35,958 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 131 for LOIs [2024-11-14 04:06:36,160 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:07:18,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1317644213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:07:18,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:07:18,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 5, 5] total 27 [2024-11-14 04:07:18,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165344929] [2024-11-14 04:07:18,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:07:18,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 04:07:18,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:07:18,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 04:07:18,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=634, Unknown=8, NotChecked=0, Total=702 [2024-11-14 04:07:18,253 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 22 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:07:21,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:23,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:25,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:28,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:31,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:33,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:36,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:39,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:41,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:45,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:07:48,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:07:48,414 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-11-14 04:07:48,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 04:07:48,415 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-14 04:07:48,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:07:48,415 INFO L225 Difference]: With dead ends: 49 [2024-11-14 04:07:48,415 INFO L226 Difference]: Without dead ends: 41 [2024-11-14 04:07:48,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=60, Invalid=634, Unknown=8, NotChecked=0, Total=702 [2024-11-14 04:07:48,417 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 3 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:07:48,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 126 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 485 Invalid, 18 Unknown, 0 Unchecked, 30.1s Time] [2024-11-14 04:07:48,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-14 04:07:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-14 04:07:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 37 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:07:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-11-14 04:07:48,426 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 25 [2024-11-14 04:07:48,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:07:48,427 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-11-14 04:07:48,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:07:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-11-14 04:07:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 04:07:48,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:07:48,427 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:07:48,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 04:07:48,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:07:48,628 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:07:48,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:07:48,628 INFO L85 PathProgramCache]: Analyzing trace with hash 683799302, now seen corresponding path program 1 times [2024-11-14 04:07:48,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:07:48,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041423189] [2024-11-14 04:07:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:48,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:07:48,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041423189] [2024-11-14 04:07:48,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041423189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:07:48,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965794218] [2024-11-14 04:07:48,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:48,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:07:48,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:07:48,844 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:07:48,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 04:07:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:48,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:07:48,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:07:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:07:49,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:07:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:07:49,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965794218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:07:49,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [730037563] [2024-11-14 04:07:49,265 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-14 04:07:49,266 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:07:49,266 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:07:49,266 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:07:49,266 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:07:50,262 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 114 for LOIs [2024-11-14 04:07:50,478 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:08:02,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [730037563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:08:02,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:08:02,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [5, 5, 5] total 26 [2024-11-14 04:08:02,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079450076] [2024-11-14 04:08:02,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:08:02,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 04:08:02,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:08:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 04:08:02,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=585, Unknown=4, NotChecked=0, Total=650 [2024-11-14 04:08:02,808 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:08:05,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:07,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:09,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:12,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:08:13,298 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2024-11-14 04:08:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-14 04:08:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-14 04:08:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:08:13,300 INFO L225 Difference]: With dead ends: 54 [2024-11-14 04:08:13,300 INFO L226 Difference]: Without dead ends: 46 [2024-11-14 04:08:13,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=61, Invalid=585, Unknown=4, NotChecked=0, Total=650 [2024-11-14 04:08:13,301 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:08:13,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 108 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 406 Invalid, 7 Unknown, 0 Unchecked, 10.5s Time] [2024-11-14 04:08:13,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-14 04:08:13,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2024-11-14 04:08:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.206896551724138) internal successors, (35), 32 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:08:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-11-14 04:08:13,315 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 27 [2024-11-14 04:08:13,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:08:13,315 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-11-14 04:08:13,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:08:13,315 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-11-14 04:08:13,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 04:08:13,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:08:13,316 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:08:13,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-14 04:08:13,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 04:08:13,517 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:08:13,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:08:13,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1462532165, now seen corresponding path program 1 times [2024-11-14 04:08:13,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:08:13,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443915404] [2024-11-14 04:08:13,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:13,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:08:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 04:08:13,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:08:13,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443915404] [2024-11-14 04:08:13,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443915404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:08:13,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022211617] [2024-11-14 04:08:13,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:13,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:08:13,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:08:13,738 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:08:13,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 04:08:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:13,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:08:13,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:08:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:08:13,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:08:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 04:08:14,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022211617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:08:14,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [754697989] [2024-11-14 04:08:14,143 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 04:08:14,143 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:08:14,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:08:14,143 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:08:14,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:08:15,207 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 114 for LOIs [2024-11-14 04:08:15,330 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:08:30,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [754697989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:08:30,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:08:30,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [5, 5, 5] total 26 [2024-11-14 04:08:30,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881190651] [2024-11-14 04:08:30,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:08:30,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 04:08:30,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:08:30,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 04:08:30,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=585, Unknown=2, NotChecked=0, Total=650 [2024-11-14 04:08:30,926 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 21 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:08:33,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:36,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:39,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:41,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:08:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:08:43,719 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2024-11-14 04:08:43,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 04:08:43,720 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-11-14 04:08:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:08:43,721 INFO L225 Difference]: With dead ends: 54 [2024-11-14 04:08:43,721 INFO L226 Difference]: Without dead ends: 53 [2024-11-14 04:08:43,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=68, Invalid=632, Unknown=2, NotChecked=0, Total=702 [2024-11-14 04:08:43,722 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:08:43,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 100 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 426 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2024-11-14 04:08:43,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-14 04:08:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2024-11-14 04:08:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:08:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2024-11-14 04:08:43,738 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 30 [2024-11-14 04:08:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:08:43,739 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2024-11-14 04:08:43,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:08:43,739 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2024-11-14 04:08:43,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 04:08:43,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:08:43,740 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:08:43,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 04:08:43,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:08:43,941 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:08:43,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:08:43,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1906091694, now seen corresponding path program 1 times [2024-11-14 04:08:43,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:08:43,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379837441] [2024-11-14 04:08:43,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:43,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:08:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:08:44,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:08:44,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379837441] [2024-11-14 04:08:44,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379837441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:08:44,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977297626] [2024-11-14 04:08:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:08:44,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:08:44,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:08:44,136 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:08:44,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 04:08:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:08:44,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:08:44,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:08:44,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:08:44,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:08:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:08:44,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977297626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:08:44,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1782043733] [2024-11-14 04:08:44,623 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2024-11-14 04:08:44,623 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:08:44,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:08:44,624 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:08:44,624 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:08:45,638 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 114 for LOIs [2024-11-14 04:08:45,784 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:09:00,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1782043733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:09:00,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:09:00,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [5, 5, 5] total 28 [2024-11-14 04:09:00,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901063796] [2024-11-14 04:09:00,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:09:00,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 04:09:00,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:09:00,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 04:09:00,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=686, Unknown=2, NotChecked=0, Total=756 [2024-11-14 04:09:00,235 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 23 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:09:02,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:05,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:07,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:10,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:09:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:09:12,127 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2024-11-14 04:09:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 04:09:12,128 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-14 04:09:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:09:12,129 INFO L225 Difference]: With dead ends: 56 [2024-11-14 04:09:12,129 INFO L226 Difference]: Without dead ends: 55 [2024-11-14 04:09:12,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=78, Invalid=790, Unknown=2, NotChecked=0, Total=870 [2024-11-14 04:09:12,130 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:09:12,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 71 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 487 Invalid, 5 Unknown, 0 Unchecked, 11.5s Time] [2024-11-14 04:09:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-14 04:09:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-11-14 04:09:12,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:09:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2024-11-14 04:09:12,158 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 31 [2024-11-14 04:09:12,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:09:12,158 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2024-11-14 04:09:12,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:09:12,158 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2024-11-14 04:09:12,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 04:09:12,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:09:12,159 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:09:12,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-14 04:09:12,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 04:09:12,360 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:09:12,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:09:12,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1906143236, now seen corresponding path program 1 times [2024-11-14 04:09:12,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:09:12,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937511226] [2024-11-14 04:09:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:12,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:09:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:09:12,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:09:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937511226] [2024-11-14 04:09:12,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937511226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:09:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693281653] [2024-11-14 04:09:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:12,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:09:12,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:09:12,599 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:09:12,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 04:09:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:12,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:09:12,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:09:12,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:09:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:09:13,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693281653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:09:13,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [195094296] [2024-11-14 04:09:13,070 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 04:09:13,070 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:09:13,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:09:13,070 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:09:13,071 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:09:14,429 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 131 for LOIs [2024-11-14 04:09:14,551 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:09:46,326 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2417#(and (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_39| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_39| Int)) (and (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~ptr~0#1.base_39|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_39| 4))) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~ptr~0#1.base_39|) |v_ULTIMATE.start_main_~ptr~0#1.offset_39|) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_39|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_39| 4)) |ULTIMATE.start_main_~ptr~0#1.offset|))) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~uneq~0#1| 5) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 2 |ULTIMATE.start_main_~#s~0#1.base|))' at error location [2024-11-14 04:09:46,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:09:46,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:09:46,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-14 04:09:46,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239926858] [2024-11-14 04:09:46,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:09:46,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:09:46,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:09:46,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:09:46,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=682, Unknown=7, NotChecked=0, Total=756 [2024-11-14 04:09:46,329 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 04:09:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:09:46,441 INFO L93 Difference]: Finished difference Result 106 states and 118 transitions. [2024-11-14 04:09:46,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:09:46,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2024-11-14 04:09:46,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:09:46,443 INFO L225 Difference]: With dead ends: 106 [2024-11-14 04:09:46,443 INFO L226 Difference]: Without dead ends: 59 [2024-11-14 04:09:46,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=67, Invalid=682, Unknown=7, NotChecked=0, Total=756 [2024-11-14 04:09:46,443 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:09:46,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 77 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:09:46,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-14 04:09:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-14 04:09:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 54 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:09:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2024-11-14 04:09:46,461 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 31 [2024-11-14 04:09:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:09:46,462 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2024-11-14 04:09:46,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 04:09:46,462 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2024-11-14 04:09:46,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 04:09:46,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:09:46,463 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:09:46,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 04:09:46,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 04:09:46,667 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:09:46,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:09:46,668 INFO L85 PathProgramCache]: Analyzing trace with hash -358009574, now seen corresponding path program 2 times [2024-11-14 04:09:46,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:09:46,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898271425] [2024-11-14 04:09:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:09:46,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:09:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:09:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 04:09:46,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:09:46,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898271425] [2024-11-14 04:09:46,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898271425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:09:46,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248064664] [2024-11-14 04:09:46,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:09:46,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:09:46,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:09:46,913 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:09:46,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 04:09:47,074 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 04:09:47,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:09:47,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:09:47,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:09:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 04:09:47,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:09:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 04:09:47,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248064664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:09:47,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2105727993] [2024-11-14 04:09:47,538 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 04:09:47,538 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:09:47,538 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:09:47,538 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:09:47,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:09:48,526 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 131 for LOIs [2024-11-14 04:09:48,614 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:10:22,880 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2880#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.offset_45| Int) (|v_ULTIMATE.start_main_~ptr~0#1.base_45| Int)) (and (= (select (select |#memory_int| |v_ULTIMATE.start_main_~ptr~0#1.base_45|) |v_ULTIMATE.start_main_~ptr~0#1.offset_45|) 1) (= |ULTIMATE.start_main_~ptr~0#1.offset| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_45|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_45| 4))) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~ptr~0#1.base_45|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_45| 4))))) (= |ULTIMATE.start_main_~uneq~0#1| 5) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 2 |ULTIMATE.start_main_~#s~0#1.base|))' at error location [2024-11-14 04:10:22,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:10:22,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:10:22,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-14 04:10:22,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526966743] [2024-11-14 04:10:22,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:10:22,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 04:10:22,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:22,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 04:10:22,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=951, Unknown=8, NotChecked=0, Total=1056 [2024-11-14 04:10:22,882 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:23,131 INFO L93 Difference]: Finished difference Result 102 states and 123 transitions. [2024-11-14 04:10:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:10:23,132 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2024-11-14 04:10:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:23,133 INFO L225 Difference]: With dead ends: 102 [2024-11-14 04:10:23,134 INFO L226 Difference]: Without dead ends: 101 [2024-11-14 04:10:23,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 34.6s TimeCoverageRelationStatistics Valid=97, Invalid=951, Unknown=8, NotChecked=0, Total=1056 [2024-11-14 04:10:23,134 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:23,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 150 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:10:23,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-14 04:10:23,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2024-11-14 04:10:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 81 states have (on average 1.2222222222222223) internal successors, (99), 84 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:10:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2024-11-14 04:10:23,155 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 39 [2024-11-14 04:10:23,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:23,155 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2024-11-14 04:10:23,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:23,156 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2024-11-14 04:10:23,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 04:10:23,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:23,157 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:23,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-14 04:10:23,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 04:10:23,361 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:10:23,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:23,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1785007400, now seen corresponding path program 1 times [2024-11-14 04:10:23,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:23,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480957508] [2024-11-14 04:10:23,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:23,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 04:10:23,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480957508] [2024-11-14 04:10:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480957508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:23,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736359860] [2024-11-14 04:10:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:23,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:23,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:23,628 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:23,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 04:10:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:23,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:10:23,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:23,948 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 04:10:23,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 04:10:24,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736359860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:10:24,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1499865994] [2024-11-14 04:10:24,269 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 04:10:24,269 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:10:24,269 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:10:24,269 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:10:24,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:10:28,295 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 77 for LOIs [2024-11-14 04:10:28,346 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:11:02,871 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3378#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_50| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_50| Int)) (= 5 (select (select |#memory_int| |v_ULTIMATE.start_main_~ptr~0#1.base_50|) |v_ULTIMATE.start_main_~ptr~0#1.offset_50|))) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 2 |ULTIMATE.start_main_~#s~0#1.base|))' at error location [2024-11-14 04:11:02,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:11:02,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:11:02,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-14 04:11:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486387092] [2024-11-14 04:11:02,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:11:02,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 04:11:02,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:02,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 04:11:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1081, Unknown=7, NotChecked=0, Total=1190 [2024-11-14 04:11:02,874 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:11:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:03,155 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2024-11-14 04:11:03,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 04:11:03,155 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2024-11-14 04:11:03,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:03,156 INFO L225 Difference]: With dead ends: 104 [2024-11-14 04:11:03,157 INFO L226 Difference]: Without dead ends: 95 [2024-11-14 04:11:03,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=102, Invalid=1081, Unknown=7, NotChecked=0, Total=1190 [2024-11-14 04:11:03,158 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:03,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 118 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:11:03,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-14 04:11:03,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2024-11-14 04:11:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 87 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:11:03,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2024-11-14 04:11:03,177 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 40 [2024-11-14 04:11:03,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:03,178 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2024-11-14 04:11:03,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:11:03,178 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2024-11-14 04:11:03,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 04:11:03,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:03,179 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:11:03,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 04:11:03,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-14 04:11:03,379 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:11:03,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:03,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1987528822, now seen corresponding path program 1 times [2024-11-14 04:11:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:03,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734781986] [2024-11-14 04:11:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:03,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:11:03,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:03,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734781986] [2024-11-14 04:11:03,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734781986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:03,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812154305] [2024-11-14 04:11:03,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:03,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:03,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:03,700 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:03,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 04:11:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:03,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:11:03,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:11:04,138 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:11:04,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812154305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:11:04,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:11:04,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-14 04:11:04,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030030146] [2024-11-14 04:11:04,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:11:04,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:11:04,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:04,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:11:04,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:11:04,140 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:11:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:04,299 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2024-11-14 04:11:04,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:11:04,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2024-11-14 04:11:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:04,301 INFO L225 Difference]: With dead ends: 92 [2024-11-14 04:11:04,301 INFO L226 Difference]: Without dead ends: 91 [2024-11-14 04:11:04,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:11:04,301 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:04,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 90 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:11:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-14 04:11:04,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-14 04:11:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 86 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:11:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2024-11-14 04:11:04,318 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 40 [2024-11-14 04:11:04,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:04,319 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2024-11-14 04:11:04,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:11:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2024-11-14 04:11:04,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 04:11:04,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:04,320 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:11:04,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-14 04:11:04,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-14 04:11:04,523 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:11:04,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:04,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1483902785, now seen corresponding path program 1 times [2024-11-14 04:11:04,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:04,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574987711] [2024-11-14 04:11:04,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:04,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:11:04,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:04,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574987711] [2024-11-14 04:11:04,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574987711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:04,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510482929] [2024-11-14 04:11:04,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:04,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:04,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:04,820 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:04,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 04:11:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:04,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:11:04,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:11:05,200 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:11:05,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510482929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:11:05,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:11:05,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-14 04:11:05,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982584286] [2024-11-14 04:11:05,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:11:05,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:11:05,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:05,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:11:05,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:11:05,202 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:11:05,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:05,437 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2024-11-14 04:11:05,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:11:05,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2024-11-14 04:11:05,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:05,438 INFO L225 Difference]: With dead ends: 91 [2024-11-14 04:11:05,438 INFO L226 Difference]: Without dead ends: 87 [2024-11-14 04:11:05,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:11:05,439 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:05,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 78 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:11:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-14 04:11:05,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 54. [2024-11-14 04:11:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 49 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:11:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2024-11-14 04:11:05,457 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 41 [2024-11-14 04:11:05,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:05,458 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2024-11-14 04:11:05,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:11:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2024-11-14 04:11:05,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 04:11:05,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:05,459 INFO L215 NwaCegarLoop]: trace histogram [4, 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] [2024-11-14 04:11:05,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-14 04:11:05,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:05,660 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:11:05,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1604229800, now seen corresponding path program 2 times [2024-11-14 04:11:05,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:05,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459643756] [2024-11-14 04:11:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 04:11:06,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:06,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459643756] [2024-11-14 04:11:06,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459643756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:06,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041243007] [2024-11-14 04:11:06,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:11:06,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:06,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:06,171 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:06,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 04:11:06,420 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 04:11:06,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:11:06,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-14 04:11:06,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:07,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 04:11:07,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 04:11:08,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 04:11:08,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 13 [2024-11-14 04:11:08,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 04:11:08,685 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_node_create_~temp~0#1.base_85| Int)) (and (= (select |c_old(#valid)| |v_node_create_~temp~0#1.base_85|) 0) (= (store |c_old(#memory_$Pointer$.base)| |v_node_create_~temp~0#1.base_85| (select |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_85|)) |c_#memory_$Pointer$.base|) (<= (+ |v_node_create_~temp~0#1.base_85| 1) |c_#StackHeapBarrier|) (= (store |c_old(#memory_$Pointer$.offset)| |v_node_create_~temp~0#1.base_85| (select |c_#memory_$Pointer$.offset| |v_node_create_~temp~0#1.base_85|)) |c_#memory_$Pointer$.offset|))) is different from true [2024-11-14 04:11:08,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:11:08,794 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-14 04:11:08,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 29 [2024-11-14 04:11:08,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:11:08,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 04:11:08,887 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-14 04:11:08,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-14 04:11:09,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 04:11:09,313 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 04:11:09,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-14 04:11:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 2 not checked. [2024-11-14 04:11:09,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:11:10,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041243007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:10,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [811208673] [2024-11-14 04:11:10,620 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 04:11:10,620 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:11:10,621 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:11:10,621 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:11:10,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:11:17,519 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 94 for LOIs [2024-11-14 04:11:17,560 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:12:12,662 WARN L286 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 254 DAG size of output: 246 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:12:27,250 WARN L286 SmtUtils]: Spent 9.23s on a formula simplification. DAG size of input: 271 DAG size of output: 263 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:12:33,297 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4557#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_58| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_58| Int)) (= 5 (select (select |#memory_int| |v_ULTIMATE.start_main_~ptr~0#1.base_58|) |v_ULTIMATE.start_main_~ptr~0#1.offset_58|))) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 2 |ULTIMATE.start_main_~#s~0#1.base|))' at error location [2024-11-14 04:12:33,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:12:33,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:12:33,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18] total 26 [2024-11-14 04:12:33,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934645530] [2024-11-14 04:12:33,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:12:33,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 04:12:33,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:12:33,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 04:12:33,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2304, Unknown=8, NotChecked=96, Total=2550 [2024-11-14 04:12:33,299 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 26 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 23 states have internal predecessors, (69), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 04:12:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:12:38,605 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2024-11-14 04:12:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 04:12:38,605 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 23 states have internal predecessors, (69), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 50 [2024-11-14 04:12:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:12:38,607 INFO L225 Difference]: With dead ends: 95 [2024-11-14 04:12:38,607 INFO L226 Difference]: Without dead ends: 57 [2024-11-14 04:12:38,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 82.2s TimeCoverageRelationStatistics Valid=239, Invalid=4047, Unknown=8, NotChecked=128, Total=4422 [2024-11-14 04:12:38,609 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 47 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-14 04:12:38,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 331 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 411 Invalid, 0 Unknown, 63 Unchecked, 1.9s Time] [2024-11-14 04:12:38,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-14 04:12:38,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2024-11-14 04:12:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.08) internal successors, (54), 51 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:12:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2024-11-14 04:12:38,632 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 50 [2024-11-14 04:12:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:12:38,632 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2024-11-14 04:12:38,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 23 states have internal predecessors, (69), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 04:12:38,632 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2024-11-14 04:12:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 04:12:38,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:12:38,633 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:12:38,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-14 04:12:38,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 04:12:38,834 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:12:38,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:12:38,834 INFO L85 PathProgramCache]: Analyzing trace with hash 561620803, now seen corresponding path program 1 times [2024-11-14 04:12:38,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:12:38,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907619185] [2024-11-14 04:12:38,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:12:38,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:12:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:12:39,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:12:39,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907619185] [2024-11-14 04:12:39,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907619185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:12:39,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396111135] [2024-11-14 04:12:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:12:39,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:12:39,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:12:39,745 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:12:39,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 04:12:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:39,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:12:39,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:12:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:12:40,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:12:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:12:41,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396111135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:12:41,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1476107421] [2024-11-14 04:12:41,592 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 04:12:41,592 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:12:41,593 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:12:41,593 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:12:41,593 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:12:42,427 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 114 for LOIs [2024-11-14 04:12:42,536 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:12:57,204 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5152#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.offset_68| Int) (|v_ULTIMATE.start_main_~ptr~0#1.base_68| Int)) (and (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~ptr~0#1.base_68|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_68| 4)) |ULTIMATE.start_main_~ptr~0#1.offset|) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~ptr~0#1.base_68|) |v_ULTIMATE.start_main_~ptr~0#1.offset_68|) 1) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_main_~ptr~0#1.base_68|) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_68| 4))))) (= |ULTIMATE.start_main_~uneq~0#1| 5) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 2 |ULTIMATE.start_main_~#s~0#1.base|))' at error location [2024-11-14 04:12:57,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:12:57,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:12:57,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-14 04:12:57,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140899196] [2024-11-14 04:12:57,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:12:57,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 04:12:57,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:12:57,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 04:12:57,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1672, Unknown=4, NotChecked=0, Total=1892 [2024-11-14 04:12:57,206 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 24 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:12:57,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:12:57,768 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2024-11-14 04:12:57,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 04:12:57,769 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 24 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2024-11-14 04:12:57,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:12:57,770 INFO L225 Difference]: With dead ends: 99 [2024-11-14 04:12:57,770 INFO L226 Difference]: Without dead ends: 98 [2024-11-14 04:12:57,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=216, Invalid=1672, Unknown=4, NotChecked=0, Total=1892 [2024-11-14 04:12:57,771 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:12:57,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 241 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:12:57,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-14 04:12:57,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2024-11-14 04:12:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.125) internal successors, (90), 81 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:12:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2024-11-14 04:12:57,791 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 56 [2024-11-14 04:12:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:12:57,791 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2024-11-14 04:12:57,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.260869565217391) internal successors, (75), 24 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:12:57,791 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2024-11-14 04:12:57,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 04:12:57,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:12:57,792 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:12:57,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 04:12:57,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-14 04:12:57,992 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:12:57,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:12:57,993 INFO L85 PathProgramCache]: Analyzing trace with hash 228778015, now seen corresponding path program 1 times [2024-11-14 04:12:57,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:12:57,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74025232] [2024-11-14 04:12:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:12:57,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:12:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:12:58,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:12:58,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74025232] [2024-11-14 04:12:58,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74025232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:12:58,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374462997] [2024-11-14 04:12:58,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:12:58,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:12:58,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:12:58,962 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:12:58,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 04:12:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:59,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:12:59,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:12:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:12:59,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:13:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:13:01,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374462997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:13:01,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1440325120] [2024-11-14 04:13:01,203 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 04:13:01,203 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:13:01,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:13:01,204 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:13:01,204 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:13:07,056 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 94 for LOIs [2024-11-14 04:13:07,094 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:13:35,012 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5759#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.offset_77| Int) (|v_ULTIMATE.start_main_~ptr~0#1.base_77| Int)) (= 5 (select (select |#memory_int| |v_ULTIMATE.start_main_~ptr~0#1.base_77|) |v_ULTIMATE.start_main_~ptr~0#1.offset_77|))) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 2 |ULTIMATE.start_main_~#s~0#1.base|))' at error location [2024-11-14 04:13:35,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:13:35,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:13:35,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-14 04:13:35,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469208075] [2024-11-14 04:13:35,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:13:35,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 04:13:35,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:13:35,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 04:13:35,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1776, Unknown=3, NotChecked=0, Total=1980 [2024-11-14 04:13:35,014 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:13:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:13:35,582 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2024-11-14 04:13:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-14 04:13:35,582 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-14 04:13:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:13:35,583 INFO L225 Difference]: With dead ends: 101 [2024-11-14 04:13:35,583 INFO L226 Difference]: Without dead ends: 86 [2024-11-14 04:13:35,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=201, Invalid=1776, Unknown=3, NotChecked=0, Total=1980 [2024-11-14 04:13:35,584 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:13:35,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 228 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:13:35,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-14 04:13:35,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-14 04:13:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.0625) internal successors, (85), 81 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:13:35,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2024-11-14 04:13:35,608 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 57 [2024-11-14 04:13:35,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:13:35,608 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2024-11-14 04:13:35,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:13:35,608 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2024-11-14 04:13:35,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 04:13:35,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:13:35,609 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:13:35,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-14 04:13:35,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 04:13:35,810 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:13:35,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:13:35,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2000382835, now seen corresponding path program 2 times [2024-11-14 04:13:35,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:13:35,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373461556] [2024-11-14 04:13:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:13:35,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:13:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:13:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:13:37,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:13:37,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373461556] [2024-11-14 04:13:37,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373461556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:13:37,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100482987] [2024-11-14 04:13:37,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:13:37,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:13:37,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:13:37,836 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:13:37,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 04:13:38,589 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-14 04:13:38,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:13:38,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 04:13:38,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:13:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:13:39,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:13:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:13:43,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100482987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:13:43,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [821860946] [2024-11-14 04:13:43,620 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 04:13:43,620 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:13:43,620 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:13:43,620 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:13:43,620 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:13:49,650 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 94 for LOIs [2024-11-14 04:13:49,687 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:14:20,834 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6539#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ptr~0#1.base_91| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_91| Int)) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~ptr~0#1.base_91|) |v_ULTIMATE.start_main_~ptr~0#1.offset_91|) 5)) (= |ULTIMATE.start_main_~data~0#1| 1) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 2 |ULTIMATE.start_main_~#s~0#1.base|))' at error location [2024-11-14 04:14:20,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:14:20,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:14:20,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2024-11-14 04:14:20,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701395958] [2024-11-14 04:14:20,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:14:20,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-14 04:14:20,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:14:20,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-14 04:14:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=3616, Unknown=3, NotChecked=0, Total=4160 [2024-11-14 04:14:20,837 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand has 44 states, 43 states have (on average 2.953488372093023) internal successors, (127), 44 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:14:21,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:21,694 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2024-11-14 04:14:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-14 04:14:21,694 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.953488372093023) internal successors, (127), 44 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2024-11-14 04:14:21,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:21,695 INFO L225 Difference]: With dead ends: 155 [2024-11-14 04:14:21,695 INFO L226 Difference]: Without dead ends: 129 [2024-11-14 04:14:21,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1862 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=541, Invalid=3616, Unknown=3, NotChecked=0, Total=4160 [2024-11-14 04:14:21,697 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:21,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 311 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 04:14:21,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-14 04:14:21,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2024-11-14 04:14:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 123 states have internal predecessors, (126), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:14:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2024-11-14 04:14:21,714 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 82 [2024-11-14 04:14:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:21,715 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2024-11-14 04:14:21,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.953488372093023) internal successors, (127), 44 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:14:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2024-11-14 04:14:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-14 04:14:21,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:21,716 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:21,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 04:14:21,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:14:21,917 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:14:21,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:21,917 INFO L85 PathProgramCache]: Analyzing trace with hash 768839171, now seen corresponding path program 2 times [2024-11-14 04:14:21,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:14:21,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375419205] [2024-11-14 04:14:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:21,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:14:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:14:28,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:14:28,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375419205] [2024-11-14 04:14:28,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375419205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:14:28,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343191920] [2024-11-14 04:14:28,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:14:28,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:14:28,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:14:28,699 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:14:28,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 04:14:29,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-14 04:14:29,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:14:29,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 135 conjuncts are in the unsatisfiable core [2024-11-14 04:14:29,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:30,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 04:14:31,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-14 04:14:32,502 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-14 04:14:32,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-14 04:14:33,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 04:14:34,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 04:14:34,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 23 [2024-11-14 04:14:34,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 04:14:34,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 04:14:35,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:14:35,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2024-11-14 04:14:35,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:14:35,511 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 04:14:35,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 44 [2024-11-14 04:14:35,668 INFO L349 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2024-11-14 04:14:35,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2024-11-14 04:14:40,934 INFO L349 Elim1Store]: treesize reduction 146, result has 13.1 percent of original size [2024-11-14 04:14:40,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 320 treesize of output 171 [2024-11-14 04:14:40,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:14:41,044 INFO L349 Elim1Store]: treesize reduction 73, result has 8.8 percent of original size [2024-11-14 04:14:41,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 214 treesize of output 155 [2024-11-14 04:14:58,689 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-14 04:14:58,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-14 04:14:58,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1484705961] [2024-11-14 04:14:58,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-14 04:14:58,691 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-14 04:14:58,691 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:14:58,691 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:14:58,691 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:14:58,692 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:14:58,696 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:326) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2024-11-14 04:14:58,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:14:58,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2024-11-14 04:14:58,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946854505] [2024-11-14 04:14:58,700 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:14:58,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 04:14:58,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:14:58,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 04:14:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=3431, Unknown=0, NotChecked=0, Total=3906 [2024-11-14 04:14:58,702 INFO L87 Difference]: Start difference. First operand 128 states and 132 transitions. Second operand has 40 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 40 states have internal predecessors, (111), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:14:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:14:58,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=475, Invalid=3431, Unknown=0, NotChecked=0, Total=3906 [2024-11-14 04:14:58,705 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:58,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:14:58,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-14 04:14:58,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:14:58,907 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@58560569 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:460) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:104) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:373) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 04:14:58,910 INFO L158 Benchmark]: Toolchain (without parser) took 517854.62ms. Allocated memory was 142.6MB in the beginning and 830.5MB in the end (delta: 687.9MB). Free memory was 117.7MB in the beginning and 765.5MB in the end (delta: -647.8MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2024-11-14 04:14:58,910 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 142.6MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:14:58,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.86ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 99.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:14:58,910 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.61ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 98.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:14:58,910 INFO L158 Benchmark]: Boogie Preprocessor took 45.18ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 96.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:14:58,911 INFO L158 Benchmark]: RCFGBuilder took 501.34ms. Allocated memory is still 142.6MB. Free memory was 96.5MB in the beginning and 76.5MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 04:14:58,911 INFO L158 Benchmark]: TraceAbstraction took 516834.51ms. Allocated memory was 142.6MB in the beginning and 830.5MB in the end (delta: 687.9MB). Free memory was 75.8MB in the beginning and 765.5MB in the end (delta: -689.6MB). Peak memory consumption was 631.7kB. Max. memory is 16.1GB. [2024-11-14 04:14:58,914 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 142.6MB. Free memory is still 79.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 408.86ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 99.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.61ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 98.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.18ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 96.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 501.34ms. Allocated memory is still 142.6MB. Free memory was 96.5MB in the beginning and 76.5MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 516834.51ms. Allocated memory was 142.6MB in the beginning and 830.5MB in the end (delta: 687.9MB). Free memory was 75.8MB in the beginning and 765.5MB in the end (delta: -689.6MB). Peak memory consumption was 631.7kB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@58560569 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@58560569: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 742ffe63db70127807dbc7584eb0c51633a9ed1be5f19fa1a247e43392d52dab --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:15:01,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:15:01,571 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf [2024-11-14 04:15:01,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:15:01,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:15:01,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:15:01,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:15:01,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:15:01,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:15:01,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:15:01,611 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:15:01,612 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:15:01,612 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:15:01,612 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:15:01,612 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:15:01,612 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:15:01,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:15:01,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:15:01,614 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:15:01,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:15:01,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:15:01,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:15:01,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:15:01,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:15:01,614 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:15:01,615 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 04:15:01,615 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:15:01,615 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 04:15:01,615 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 04:15:01,615 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:15:01,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:15:01,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:15:01,616 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:15:01,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:15:01,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 04:15:01,617 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:15:01,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:15:01,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:15:01,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:15:01,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:15:01,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:15:01,618 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 04:15:01,618 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:01,618 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:15:01,618 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:15:01,618 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E 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 ! overflow) ) 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 -> 742ffe63db70127807dbc7584eb0c51633a9ed1be5f19fa1a247e43392d52dab [2024-11-14 04:15:01,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:15:01,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:15:01,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:15:01,936 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:15:01,936 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:15:01,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i Unable to find full path for "g++" [2024-11-14 04:15:03,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:15:04,176 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:15:04,176 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/sv-benchmarks/c/list-simple/sll2n_append_unequal.i [2024-11-14 04:15:04,199 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/data/668879672/e0c83b254b2c4c01bb6e16768b2e68f9/FLAG050f6dd17 [2024-11-14 04:15:04,391 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/data/668879672/e0c83b254b2c4c01bb6e16768b2e68f9 [2024-11-14 04:15:04,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:15:04,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:15:04,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:15:04,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:15:04,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:15:04,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:04,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2069fb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04, skipping insertion in model container [2024-11-14 04:15:04,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:04,448 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:15:04,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:15:04,872 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:15:04,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:15:04,984 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:15:04,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04 WrapperNode [2024-11-14 04:15:04,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:15:04,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:15:04,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:15:04,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:15:04,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:05,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:05,058 INFO L138 Inliner]: procedures = 130, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 144 [2024-11-14 04:15:05,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:15:05,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:15:05,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:15:05,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:15:05,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:05,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:05,076 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:05,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:05,096 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:05,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:05,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:05,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:05,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:15:05,118 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:15:05,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:15:05,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:15:05,120 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04" (1/1) ... [2024-11-14 04:15:05,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:15:05,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:05,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:15:05,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:15:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 04:15:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-11-14 04:15:05,195 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-11-14 04:15:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 04:15:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:15:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:15:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 04:15:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 04:15:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:15:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 04:15:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 04:15:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 04:15:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:15:05,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:15:05,345 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:15:05,347 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:15:05,722 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-14 04:15:05,723 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:15:05,734 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:15:05,735 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-14 04:15:05,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:15:05 BoogieIcfgContainer [2024-11-14 04:15:05,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:15:05,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:15:05,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:15:05,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:15:05,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:15:04" (1/3) ... [2024-11-14 04:15:05,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d09c229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:15:05, skipping insertion in model container [2024-11-14 04:15:05,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:15:04" (2/3) ... [2024-11-14 04:15:05,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d09c229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:15:05, skipping insertion in model container [2024-11-14 04:15:05,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:15:05" (3/3) ... [2024-11-14 04:15:05,749 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_append_unequal.i [2024-11-14 04:15:05,763 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:15:05,764 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sll2n_append_unequal.i that has 2 procedures, 51 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2024-11-14 04:15:05,836 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:15:05,848 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;@47e6c543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:15:05,848 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-14 04:15:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 47 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:15:05,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 04:15:05,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:05,860 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:05,861 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:05,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:05,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1957395458, now seen corresponding path program 1 times [2024-11-14 04:15:05,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:05,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196334480] [2024-11-14 04:15:05,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:05,877 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 [2024-11-14 04:15:05,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:05,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:05,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:15:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:06,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:15:06,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:15:06,111 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:15:06,112 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:06,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196334480] [2024-11-14 04:15:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196334480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:15:06,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:15:06,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:15:06,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255194518] [2024-11-14 04:15:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:15:06,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:15:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:06,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:15:06,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:15:06,149 INFO L87 Difference]: Start difference. First operand has 51 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 47 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:15:06,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:06,244 INFO L93 Difference]: Finished difference Result 95 states and 129 transitions. [2024-11-14 04:15:06,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:15:06,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-14 04:15:06,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:06,255 INFO L225 Difference]: With dead ends: 95 [2024-11-14 04:15:06,255 INFO L226 Difference]: Without dead ends: 42 [2024-11-14 04:15:06,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:15:06,263 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 1 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:06,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 147 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:15:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-14 04:15:06,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2024-11-14 04:15:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:15:06,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-11-14 04:15:06,315 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 11 [2024-11-14 04:15:06,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:06,316 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-11-14 04:15:06,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:15:06,317 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-11-14 04:15:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 04:15:06,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:06,320 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 04:15:06,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Ended with exit code 0 [2024-11-14 04:15:06,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:15:06,521 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:06,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:06,522 INFO L85 PathProgramCache]: Analyzing trace with hash 690789016, now seen corresponding path program 1 times [2024-11-14 04:15:06,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:06,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726257165] [2024-11-14 04:15:06,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:06,523 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 [2024-11-14 04:15:06,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:06,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:06,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:15:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:06,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:15:06,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:06,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:06,958 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:06,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726257165] [2024-11-14 04:15:06,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726257165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:06,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [614426494] [2024-11-14 04:15:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:06,959 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:06,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:06,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:06,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-14 04:15:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:07,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:15:07,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:07,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:07,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [614426494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:07,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896323121] [2024-11-14 04:15:07,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:07,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:07,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:07,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:07,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:15:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:07,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:15:07,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:15:07,538 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:15:07,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896323121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:15:07,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-14 04:15:07,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5, 5] total 11 [2024-11-14 04:15:07,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539259482] [2024-11-14 04:15:07,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:15:07,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:15:07,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:07,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:15:07,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:15:07,542 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:15:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:07,585 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-14 04:15:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:15:07,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-14 04:15:07,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:07,587 INFO L225 Difference]: With dead ends: 41 [2024-11-14 04:15:07,587 INFO L226 Difference]: Without dead ends: 40 [2024-11-14 04:15:07,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:15:07,589 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:07,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 105 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:15:07,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-14 04:15:07,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2024-11-14 04:15:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 33 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:15:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-11-14 04:15:07,595 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 21 [2024-11-14 04:15:07,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:07,595 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-11-14 04:15:07,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:15:07,596 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-11-14 04:15:07,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 04:15:07,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:07,597 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:07,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-14 04:15:07,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:15:08,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 04:15:08,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:08,198 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:08,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:08,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1753024737, now seen corresponding path program 1 times [2024-11-14 04:15:08,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:08,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753376085] [2024-11-14 04:15:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:08,199 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 [2024-11-14 04:15:08,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:08,202 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:08,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:15:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:08,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:15:08,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:15:08,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:08,457 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:08,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753376085] [2024-11-14 04:15:08,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753376085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:08,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1823005493] [2024-11-14 04:15:08,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:08,457 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:08,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:08,460 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:08,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-14 04:15:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:08,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:15:08,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:15:08,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:08,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1823005493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:08,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993518350] [2024-11-14 04:15:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:08,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:08,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:08,762 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:08,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 04:15:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:08,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:15:08,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:15:08,989 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:15:08,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993518350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:15:08,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-14 04:15:08,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5, 5, 5] total 9 [2024-11-14 04:15:08,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405522923] [2024-11-14 04:15:08,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:15:08,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:15:08,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:08,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:15:08,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:15:08,992 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:09,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:09,002 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-11-14 04:15:09,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:15:09,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-14 04:15:09,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:09,004 INFO L225 Difference]: With dead ends: 37 [2024-11-14 04:15:09,004 INFO L226 Difference]: Without dead ends: 34 [2024-11-14 04:15:09,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:15:09,005 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:09,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:15:09,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-14 04:15:09,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-14 04:15:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:15:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-14 04:15:09,017 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2024-11-14 04:15:09,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:09,018 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-14 04:15:09,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:09,018 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-14 04:15:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 04:15:09,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:09,019 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:09,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:15:09,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 04:15:09,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-14 04:15:09,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:09,624 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:09,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1467291228, now seen corresponding path program 1 times [2024-11-14 04:15:09,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:09,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466552281] [2024-11-14 04:15:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:09,625 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 [2024-11-14 04:15:09,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:09,631 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:09,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:15:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:09,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:15:09,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:15:09,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:09,902 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:09,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466552281] [2024-11-14 04:15:09,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466552281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:09,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1621380474] [2024-11-14 04:15:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:09,902 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:09,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:09,905 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:09,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-14 04:15:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:10,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:15:10,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:15:10,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:10,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1621380474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:10,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608865992] [2024-11-14 04:15:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:10,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:10,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:10,230 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:10,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 04:15:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:10,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:15:10,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:15:10,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:15:10,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608865992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:15:10,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-14 04:15:10,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5, 5] total 10 [2024-11-14 04:15:10,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655532939] [2024-11-14 04:15:10,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:15:10,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:15:10,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:10,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:15:10,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:15:10,425 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:10,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:10,455 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-11-14 04:15:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:15:10,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-14 04:15:10,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:10,456 INFO L225 Difference]: With dead ends: 42 [2024-11-14 04:15:10,456 INFO L226 Difference]: Without dead ends: 41 [2024-11-14 04:15:10,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:15:10,457 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:10,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 94 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:15:10,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-14 04:15:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2024-11-14 04:15:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:15:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-11-14 04:15:10,464 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 30 [2024-11-14 04:15:10,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:10,464 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-11-14 04:15:10,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:10,466 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-11-14 04:15:10,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 04:15:10,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:10,468 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:10,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-14 04:15:10,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:15:10,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-14 04:15:11,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:11,070 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:11,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:11,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1760209882, now seen corresponding path program 1 times [2024-11-14 04:15:11,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:11,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601265284] [2024-11-14 04:15:11,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:11,071 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 [2024-11-14 04:15:11,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:11,073 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:11,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-14 04:15:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:11,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:15:11,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:15:11,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:11,361 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:11,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601265284] [2024-11-14 04:15:11,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601265284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:11,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2116716878] [2024-11-14 04:15:11,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:11,362 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:11,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:11,364 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:11,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-14 04:15:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:11,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:15:11,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:15:11,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:11,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2116716878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:11,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897966089] [2024-11-14 04:15:11,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:11,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:11,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:11,699 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:11,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 04:15:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:11,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:15:11,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:11,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-14 04:15:11,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-14 04:15:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:15:11,998 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:15:11,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897966089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:15:11,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-14 04:15:11,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 11 [2024-11-14 04:15:11,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383368146] [2024-11-14 04:15:11,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:15:11,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:15:11,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:12,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:15:12,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:15:12,000 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:12,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:12,205 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2024-11-14 04:15:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:15:12,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-11-14 04:15:12,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:12,206 INFO L225 Difference]: With dead ends: 44 [2024-11-14 04:15:12,206 INFO L226 Difference]: Without dead ends: 39 [2024-11-14 04:15:12,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:15:12,208 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:12,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:15:12,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-14 04:15:12,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-14 04:15:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:15:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-14 04:15:12,214 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 31 [2024-11-14 04:15:12,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:12,215 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-14 04:15:12,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:12,215 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-14 04:15:12,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 04:15:12,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:12,216 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:12,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-14 04:15:12,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-14 04:15:12,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-14 04:15:12,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:12,821 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:12,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:12,821 INFO L85 PathProgramCache]: Analyzing trace with hash 904162332, now seen corresponding path program 1 times [2024-11-14 04:15:12,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:12,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285941091] [2024-11-14 04:15:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:12,822 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 [2024-11-14 04:15:12,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:12,824 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:12,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-14 04:15:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:12,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:15:12,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:13,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 04:15:13,091 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:13,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285941091] [2024-11-14 04:15:13,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285941091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:13,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [97221586] [2024-11-14 04:15:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:13,091 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:13,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:13,093 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:13,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-14 04:15:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:13,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:15:13,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:13,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 04:15:13,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [97221586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:13,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335941547] [2024-11-14 04:15:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:13,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:13,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:13,458 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:13,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 04:15:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:13,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:15:13,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:15:13,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 04:15:13,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335941547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:13,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:15:13,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 6] total 9 [2024-11-14 04:15:13,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268839529] [2024-11-14 04:15:13,688 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:15:13,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:15:13,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:13,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:15:13,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:15:13,689 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 04:15:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:13,807 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2024-11-14 04:15:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:15:13,808 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2024-11-14 04:15:13,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:13,808 INFO L225 Difference]: With dead ends: 77 [2024-11-14 04:15:13,808 INFO L226 Difference]: Without dead ends: 46 [2024-11-14 04:15:13,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:15:13,809 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:13,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 191 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:15:13,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-14 04:15:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2024-11-14 04:15:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.131578947368421) internal successors, (43), 39 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:15:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2024-11-14 04:15:13,816 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 35 [2024-11-14 04:15:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:13,816 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2024-11-14 04:15:13,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 04:15:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2024-11-14 04:15:13,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 04:15:13,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:13,817 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:13,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-14 04:15:14,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-14 04:15:14,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2024-11-14 04:15:14,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:14,422 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:14,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:14,422 INFO L85 PathProgramCache]: Analyzing trace with hash -726095694, now seen corresponding path program 2 times [2024-11-14 04:15:14,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:14,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781622244] [2024-11-14 04:15:14,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:15:14,423 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 [2024-11-14 04:15:14,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:14,424 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:14,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-14 04:15:14,611 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-14 04:15:14,611 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:14,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-14 04:15:14,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:14,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2024-11-14 04:15:14,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2024-11-14 04:15:15,143 INFO L349 Elim1Store]: treesize reduction 41, result has 46.1 percent of original size [2024-11-14 04:15:15,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 39 [2024-11-14 04:15:15,217 INFO L349 Elim1Store]: treesize reduction 41, result has 46.1 percent of original size [2024-11-14 04:15:15,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 39 [2024-11-14 04:15:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-14 04:15:15,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:15:15,427 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:15,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781622244] [2024-11-14 04:15:15,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781622244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:15:15,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:15:15,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-14 04:15:15,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275117993] [2024-11-14 04:15:15,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:15:15,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 04:15:15,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:15,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 04:15:15,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:15:15,429 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:15:16,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:16,269 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2024-11-14 04:15:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:15:16,274 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-14 04:15:16,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:16,275 INFO L225 Difference]: With dead ends: 62 [2024-11-14 04:15:16,275 INFO L226 Difference]: Without dead ends: 44 [2024-11-14 04:15:16,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-14 04:15:16,276 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 42 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:16,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 175 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:15:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-14 04:15:16,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-14 04:15:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:15:16,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2024-11-14 04:15:16,283 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 45 [2024-11-14 04:15:16,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:16,283 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2024-11-14 04:15:16,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:15:16,284 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2024-11-14 04:15:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-14 04:15:16,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:16,285 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:16,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-14 04:15:16,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:15:16,488 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:16,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:16,489 INFO L85 PathProgramCache]: Analyzing trace with hash -920994057, now seen corresponding path program 1 times [2024-11-14 04:15:16,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:16,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775445373] [2024-11-14 04:15:16,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:16,489 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 [2024-11-14 04:15:16,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:16,494 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:16,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-14 04:15:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:16,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:15:16,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:16,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:16,870 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:16,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775445373] [2024-11-14 04:15:16,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775445373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:16,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1208273067] [2024-11-14 04:15:16,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:16,870 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:16,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:16,872 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:16,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-14 04:15:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:17,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:15:17,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:17,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:17,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1208273067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:17,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576526063] [2024-11-14 04:15:17,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:17,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:17,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:17,316 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:17,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 04:15:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:17,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:15:17,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:17,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:17,570 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:17,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576526063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:17,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:15:17,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2024-11-14 04:15:17,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793453021] [2024-11-14 04:15:17,571 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:15:17,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:15:17,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:15:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:15:17,572 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:17,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:17,694 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2024-11-14 04:15:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:15:17,695 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2024-11-14 04:15:17,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:17,697 INFO L225 Difference]: With dead ends: 66 [2024-11-14 04:15:17,699 INFO L226 Difference]: Without dead ends: 65 [2024-11-14 04:15:17,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:15:17,700 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:17,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 254 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:15:17,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-14 04:15:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2024-11-14 04:15:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 54 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:15:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2024-11-14 04:15:17,712 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 48 [2024-11-14 04:15:17,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:17,713 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2024-11-14 04:15:17,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2024-11-14 04:15:17,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 04:15:17,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:17,715 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:17,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2024-11-14 04:15:17,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-14 04:15:18,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-11-14 04:15:18,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:15:18,319 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:18,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:18,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1512357611, now seen corresponding path program 1 times [2024-11-14 04:15:18,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:18,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468939867] [2024-11-14 04:15:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:18,321 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 [2024-11-14 04:15:18,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:18,324 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:18,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-14 04:15:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:18,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:15:18,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:18,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:18,683 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:18,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468939867] [2024-11-14 04:15:18,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468939867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:18,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1641303338] [2024-11-14 04:15:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:18,683 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:18,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:18,685 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:18,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-14 04:15:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:19,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:15:19,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:19,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:19,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1641303338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:19,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749910185] [2024-11-14 04:15:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:19,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:19,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:19,139 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:19,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 04:15:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:19,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:15:19,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:19,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:19,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749910185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:19,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:15:19,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2024-11-14 04:15:19,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738349874] [2024-11-14 04:15:19,402 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:15:19,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:15:19,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:19,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:15:19,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:15:19,404 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:19,511 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2024-11-14 04:15:19,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 04:15:19,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2024-11-14 04:15:19,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:19,513 INFO L225 Difference]: With dead ends: 68 [2024-11-14 04:15:19,513 INFO L226 Difference]: Without dead ends: 59 [2024-11-14 04:15:19,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:15:19,514 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:19,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 208 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:15:19,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-14 04:15:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-14 04:15:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 54 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:15:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2024-11-14 04:15:19,521 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 49 [2024-11-14 04:15:19,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:19,521 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2024-11-14 04:15:19,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:19,522 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2024-11-14 04:15:19,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-14 04:15:19,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:19,526 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 04:15:19,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2024-11-14 04:15:19,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-11-14 04:15:19,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-14 04:15:20,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:20,130 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:20,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:20,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1986606251, now seen corresponding path program 2 times [2024-11-14 04:15:20,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:20,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455572838] [2024-11-14 04:15:20,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:15:20,131 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 [2024-11-14 04:15:20,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:20,133 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:20,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-14 04:15:20,390 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:15:20,390 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:20,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:15:20,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:20,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:20,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455572838] [2024-11-14 04:15:20,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455572838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1152120829] [2024-11-14 04:15:20,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:15:20,798 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:20,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:20,802 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:20,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-14 04:15:21,290 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:15:21,290 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:21,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:15:21,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:21,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:21,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1152120829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:21,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086625849] [2024-11-14 04:15:21,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:15:21,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:21,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:21,443 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:21,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-14 04:15:21,760 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:15:21,760 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:21,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:15:21,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:21,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:21,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086625849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:21,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:15:21,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 17 [2024-11-14 04:15:21,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159466534] [2024-11-14 04:15:21,892 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:15:21,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 04:15:21,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:21,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 04:15:21,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:15:21,893 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:22,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:22,264 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2024-11-14 04:15:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 04:15:22,265 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2024-11-14 04:15:22,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:22,266 INFO L225 Difference]: With dead ends: 85 [2024-11-14 04:15:22,268 INFO L226 Difference]: Without dead ends: 72 [2024-11-14 04:15:22,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-14 04:15:22,269 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:22,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 466 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:15:22,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-14 04:15:22,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2024-11-14 04:15:22,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 66 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:15:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2024-11-14 04:15:22,281 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 59 [2024-11-14 04:15:22,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:22,282 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2024-11-14 04:15:22,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:22,283 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2024-11-14 04:15:22,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-14 04:15:22,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:22,284 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 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] [2024-11-14 04:15:22,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2024-11-14 04:15:22,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-14 04:15:22,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2024-11-14 04:15:22,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:15:22,886 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:22,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:22,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1885699551, now seen corresponding path program 2 times [2024-11-14 04:15:22,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:22,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391042132] [2024-11-14 04:15:22,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:15:22,887 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 [2024-11-14 04:15:22,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:22,889 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:22,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Waiting until timeout for monitored process [2024-11-14 04:15:23,154 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:15:23,154 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:23,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:15:23,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:23,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:23,668 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:23,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391042132] [2024-11-14 04:15:23,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391042132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:23,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [64398493] [2024-11-14 04:15:23,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:15:23,668 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:23,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:23,670 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:23,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-14 04:15:24,115 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:15:24,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:24,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:15:24,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:24,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:24,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [64398493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:24,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415323440] [2024-11-14 04:15:24,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:15:24,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:24,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:24,303 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:24,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-14 04:15:24,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:15:24,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:24,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:15:24,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:24,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:15:24,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415323440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:24,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:15:24,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 11] total 21 [2024-11-14 04:15:24,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230015457] [2024-11-14 04:15:24,842 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:15:24,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 04:15:24,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:24,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 04:15:24,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2024-11-14 04:15:24,843 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 22 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 22 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:25,467 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2024-11-14 04:15:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 04:15:25,468 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 22 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2024-11-14 04:15:25,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:25,469 INFO L225 Difference]: With dead ends: 96 [2024-11-14 04:15:25,469 INFO L226 Difference]: Without dead ends: 95 [2024-11-14 04:15:25,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2024-11-14 04:15:25,470 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:25,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 419 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:15:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-14 04:15:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2024-11-14 04:15:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 83 states have (on average 1.0843373493975903) internal successors, (90), 84 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:15:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2024-11-14 04:15:25,479 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 63 [2024-11-14 04:15:25,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:25,480 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2024-11-14 04:15:25,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 22 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2024-11-14 04:15:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 04:15:25,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:25,481 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 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] [2024-11-14 04:15:25,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Ended with exit code 0 [2024-11-14 04:15:25,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2024-11-14 04:15:25,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-14 04:15:26,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:26,083 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:26,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash -334131157, now seen corresponding path program 3 times [2024-11-14 04:15:26,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:26,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988029232] [2024-11-14 04:15:26,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:15:26,083 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 [2024-11-14 04:15:26,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:26,085 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:26,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Waiting until timeout for monitored process [2024-11-14 04:15:26,366 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 04:15:26,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:26,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-14 04:15:26,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:26,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 04:15:26,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 04:15:26,874 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 04:15:26,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2024-11-14 04:15:26,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-14 04:15:26,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 04:15:27,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:15:27,175 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-14 04:15:27,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 31 [2024-11-14 04:15:27,201 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-14 04:15:27,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-14 04:15:27,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:15:27,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 04:15:27,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 04:15:27,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 04:15:27,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 27 [2024-11-14 04:15:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-14 04:15:27,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:27,901 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:27,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988029232] [2024-11-14 04:15:27,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988029232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:15:27,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1498106705] [2024-11-14 04:15:27,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:15:27,901 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:27,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:27,903 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:27,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-14 04:15:28,460 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 04:15:28,460 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:28,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-14 04:15:28,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:28,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 04:15:28,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 04:15:29,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 04:15:29,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2024-11-14 04:15:29,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 04:15:29,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:15:29,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 04:15:29,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:15:29,431 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-14 04:15:29,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 31 [2024-11-14 04:15:29,456 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-14 04:15:29,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-14 04:15:29,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 04:15:30,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 04:15:30,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2024-11-14 04:15:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-14 04:15:30,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:30,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1498106705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:15:30,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756856488] [2024-11-14 04:15:30,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:15:30,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:30,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:30,562 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:30,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-14 04:15:31,462 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 04:15:31,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:31,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-14 04:15:31,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:31,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 04:15:31,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 04:15:31,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 04:15:31,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2024-11-14 04:15:31,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-14 04:15:31,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 04:15:31,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:15:31,888 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-14 04:15:31,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 31 [2024-11-14 04:15:31,913 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-14 04:15:31,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-14 04:15:31,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:15:31,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 04:15:32,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-14 04:15:34,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 04:15:34,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 27 [2024-11-14 04:15:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-14 04:15:34,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:34,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756856488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:15:34,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:15:34,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 30 [2024-11-14 04:15:34,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189669418] [2024-11-14 04:15:34,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:15:34,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-14 04:15:34,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:34,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-14 04:15:34,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=924, Unknown=9, NotChecked=0, Total=1056 [2024-11-14 04:15:34,695 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 24 states have internal predecessors, (59), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 04:15:36,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:36,407 INFO L93 Difference]: Finished difference Result 156 states and 168 transitions. [2024-11-14 04:15:36,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:15:36,408 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 24 states have internal predecessors, (59), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 79 [2024-11-14 04:15:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:36,410 INFO L225 Difference]: With dead ends: 156 [2024-11-14 04:15:36,410 INFO L226 Difference]: Without dead ends: 92 [2024-11-14 04:15:36,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 346 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=193, Invalid=1438, Unknown=9, NotChecked=0, Total=1640 [2024-11-14 04:15:36,412 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 48 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:36,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 447 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 402 Invalid, 1 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 04:15:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-14 04:15:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2024-11-14 04:15:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 85 states have (on average 1.0823529411764705) internal successors, (92), 86 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:15:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2024-11-14 04:15:36,423 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 79 [2024-11-14 04:15:36,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:36,423 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2024-11-14 04:15:36,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 24 states have internal predecessors, (59), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 04:15:36,424 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2024-11-14 04:15:36,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 04:15:36,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:36,425 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:36,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-14 04:15:36,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-14 04:15:36,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-14 04:15:37,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:15:37,026 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:37,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1537873680, now seen corresponding path program 1 times [2024-11-14 04:15:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:37,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412328206] [2024-11-14 04:15:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:37,027 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 [2024-11-14 04:15:37,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:37,029 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:37,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2024-11-14 04:15:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:37,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 04:15:37,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:37,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:38,392 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:38,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412328206] [2024-11-14 04:15:38,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412328206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:38,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1106872295] [2024-11-14 04:15:38,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:38,393 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:38,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:38,399 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:38,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-14 04:15:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:38,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 04:15:38,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:38,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:39,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1106872295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:39,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517604140] [2024-11-14 04:15:39,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:39,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:39,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:39,066 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:39,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-14 04:15:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:39,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 04:15:39,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:39,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:39,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517604140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:39,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:15:39,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 17, 17] total 33 [2024-11-14 04:15:39,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621142991] [2024-11-14 04:15:39,522 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:15:39,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 04:15:39,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:39,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 04:15:39,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 04:15:39,524 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 34 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 34 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:41,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:41,114 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2024-11-14 04:15:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-14 04:15:41,114 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 34 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2024-11-14 04:15:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:41,115 INFO L225 Difference]: With dead ends: 135 [2024-11-14 04:15:41,115 INFO L226 Difference]: Without dead ends: 114 [2024-11-14 04:15:41,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=377, Invalid=1693, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 04:15:41,116 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 50 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:41,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 865 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:15:41,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-14 04:15:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2024-11-14 04:15:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 107 states have (on average 1.074766355140187) internal successors, (115), 108 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:15:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2024-11-14 04:15:41,129 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 81 [2024-11-14 04:15:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:41,129 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2024-11-14 04:15:41,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 34 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2024-11-14 04:15:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-14 04:15:41,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:41,130 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:41,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-14 04:15:41,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2024-11-14 04:15:41,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-14 04:15:41,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:41,731 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:41,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:41,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1838953862, now seen corresponding path program 1 times [2024-11-14 04:15:41,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:41,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865425932] [2024-11-14 04:15:41,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:41,732 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 [2024-11-14 04:15:41,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:41,733 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:41,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2024-11-14 04:15:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:42,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 04:15:42,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:42,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:43,942 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:43,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865425932] [2024-11-14 04:15:43,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865425932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:43,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [972347155] [2024-11-14 04:15:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:43,942 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:43,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:43,944 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:43,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-14 04:15:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:44,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 04:15:44,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:44,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:44,744 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:44,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [972347155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:44,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377393173] [2024-11-14 04:15:44,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:44,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:44,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:44,747 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:44,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-14 04:15:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:44,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 04:15:44,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:45,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:45,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377393173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:45,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:15:45,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23, 23, 23, 23] total 45 [2024-11-14 04:15:45,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210967147] [2024-11-14 04:15:45,249 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:15:45,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-14 04:15:45,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:45,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-14 04:15:45,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1739, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 04:15:45,251 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand has 46 states, 45 states have (on average 2.9555555555555557) internal successors, (133), 46 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:49,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:49,075 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2024-11-14 04:15:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-14 04:15:49,076 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.9555555555555557) internal successors, (133), 46 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 95 [2024-11-14 04:15:49,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:49,077 INFO L225 Difference]: With dead ends: 166 [2024-11-14 04:15:49,077 INFO L226 Difference]: Without dead ends: 165 [2024-11-14 04:15:49,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=811, Invalid=3479, Unknown=0, NotChecked=0, Total=4290 [2024-11-14 04:15:49,078 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 56 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:49,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1313 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 04:15:49,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-14 04:15:49,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 151. [2024-11-14 04:15:49,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 145 states have (on average 1.0758620689655172) internal successors, (156), 146 states have internal predecessors, (156), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:15:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2024-11-14 04:15:49,094 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 95 [2024-11-14 04:15:49,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:49,095 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2024-11-14 04:15:49,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.9555555555555557) internal successors, (133), 46 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:15:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2024-11-14 04:15:49,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-14 04:15:49,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:49,096 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:49,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2024-11-14 04:15:49,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-14 04:15:49,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2024-11-14 04:15:49,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:49,697 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:15:49,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:49,698 INFO L85 PathProgramCache]: Analyzing trace with hash 99157264, now seen corresponding path program 2 times [2024-11-14 04:15:49,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:49,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060538093] [2024-11-14 04:15:49,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:15:49,698 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 [2024-11-14 04:15:49,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:49,703 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:15:49,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2024-11-14 04:15:50,062 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:15:50,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:50,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 04:15:50,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:50,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:53,937 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060538093] [2024-11-14 04:15:53,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060538093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [329970082] [2024-11-14 04:15:53,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:15:53,937 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:15:53,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:15:53,941 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:15:53,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2024-11-14 04:15:54,630 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:15:54,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:54,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 04:15:54,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:54,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:54,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [329970082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:54,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054828174] [2024-11-14 04:15:54,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:15:54,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:15:54,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:15:54,981 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:15:54,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-14 04:15:55,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:15:55,332 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:15:55,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 04:15:55,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:55,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:15:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:15:55,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054828174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:15:55,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:15:55,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33, 33, 33, 33] total 65 [2024-11-14 04:15:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085486563] [2024-11-14 04:15:55,676 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:15:55,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-14 04:15:55,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-14 04:15:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=3679, Unknown=0, NotChecked=0, Total=4290 [2024-11-14 04:15:55,679 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand has 66 states, 65 states have (on average 2.8461538461538463) internal successors, (185), 66 states have internal predecessors, (185), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:16:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:16:05,511 INFO L93 Difference]: Finished difference Result 231 states and 258 transitions. [2024-11-14 04:16:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-14 04:16:05,512 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.8461538461538463) internal successors, (185), 66 states have internal predecessors, (185), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 121 [2024-11-14 04:16:05,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:16:05,514 INFO L225 Difference]: With dead ends: 231 [2024-11-14 04:16:05,514 INFO L226 Difference]: Without dead ends: 194 [2024-11-14 04:16:05,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=1521, Invalid=7221, Unknown=0, NotChecked=0, Total=8742 [2024-11-14 04:16:05,517 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 226 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:16:05,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 2139 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 04:16:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-14 04:16:05,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2024-11-14 04:16:05,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 187 states have (on average 1.0641711229946524) internal successors, (199), 188 states have internal predecessors, (199), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:16:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 205 transitions. [2024-11-14 04:16:05,539 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 205 transitions. Word has length 121 [2024-11-14 04:16:05,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:16:05,540 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 205 transitions. [2024-11-14 04:16:05,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 2.8461538461538463) internal successors, (185), 66 states have internal predecessors, (185), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:16:05,540 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 205 transitions. [2024-11-14 04:16:05,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-14 04:16:05,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:16:05,542 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:16:05,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2024-11-14 04:16:05,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-14 04:16:05,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2024-11-14 04:16:06,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:16:06,143 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:16:06,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:16:06,143 INFO L85 PathProgramCache]: Analyzing trace with hash 892574342, now seen corresponding path program 2 times [2024-11-14 04:16:06,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:16:06,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60450669] [2024-11-14 04:16:06,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:16:06,144 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 [2024-11-14 04:16:06,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:16:06,146 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:16:06,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2024-11-14 04:16:06,531 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:16:06,531 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:16:06,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-14 04:16:06,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:16:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:16:08,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:16:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:16:14,650 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:16:14,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60450669] [2024-11-14 04:16:14,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60450669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:16:14,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [520261703] [2024-11-14 04:16:14,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:16:14,650 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:16:14,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:16:14,652 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:16:14,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-14 04:16:15,489 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:16:15,490 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:16:15,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-14 04:16:15,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:16:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:16:15,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:16:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:16:16,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [520261703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:16:16,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002951360] [2024-11-14 04:16:16,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 04:16:16,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:16:16,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:16:16,018 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:16:16,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-14 04:16:16,447 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 04:16:16,447 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:16:16,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-14 04:16:16,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:16:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:16:16,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:16:16,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 04:16:16,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002951360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:16:16,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:16:16,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47, 47, 47, 47] total 93 [2024-11-14 04:16:16,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904375711] [2024-11-14 04:16:16,984 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:16:16,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-14 04:16:16,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:16:16,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-14 04:16:16,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1243, Invalid=7499, Unknown=0, NotChecked=0, Total=8742 [2024-11-14 04:16:16,987 INFO L87 Difference]: Start difference. First operand 193 states and 205 transitions. Second operand has 94 states, 93 states have (on average 2.7204301075268815) internal successors, (253), 94 states have internal predecessors, (253), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:16:42,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:16:42,704 INFO L93 Difference]: Finished difference Result 302 states and 344 transitions. [2024-11-14 04:16:42,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-14 04:16:42,704 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.7204301075268815) internal successors, (253), 94 states have internal predecessors, (253), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 155 [2024-11-14 04:16:42,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:16:42,706 INFO L225 Difference]: With dead ends: 302 [2024-11-14 04:16:42,706 INFO L226 Difference]: Without dead ends: 301 [2024-11-14 04:16:42,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 832 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=3355, Invalid=15551, Unknown=0, NotChecked=0, Total=18906 [2024-11-14 04:16:42,709 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 240 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 3382 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 3383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:16:42,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 3479 Invalid, 3383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3382 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-14 04:16:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-14 04:16:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 271. [2024-11-14 04:16:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 265 states have (on average 1.0716981132075472) internal successors, (284), 266 states have internal predecessors, (284), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:16:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 290 transitions. [2024-11-14 04:16:42,733 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 290 transitions. Word has length 155 [2024-11-14 04:16:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:16:42,733 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 290 transitions. [2024-11-14 04:16:42,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.7204301075268815) internal successors, (253), 94 states have internal predecessors, (253), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:16:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 290 transitions. [2024-11-14 04:16:42,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-14 04:16:42,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:16:42,736 INFO L215 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:16:42,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-14 04:16:42,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2024-11-14 04:16:43,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (44)] Ended with exit code 0 [2024-11-14 04:16:43,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:16:43,336 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-14 04:16:43,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:16:43,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1314185488, now seen corresponding path program 3 times [2024-11-14 04:16:43,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:16:43,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648645993] [2024-11-14 04:16:43,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:16:43,337 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 [2024-11-14 04:16:43,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:16:43,339 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:16:43,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2024-11-14 04:16:44,330 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-14 04:16:44,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:16:44,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-14 04:16:44,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:16:44,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 04:16:44,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-14 04:16:44,506 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 04:16:44,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-14 04:16:44,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-14 04:16:44,881 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-14 04:16:44,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2024-11-14 04:16:44,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 04:16:44,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 04:16:45,385 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-14 04:16:45,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 42 [2024-11-14 04:16:45,403 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-14 04:16:45,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 04:16:45,417 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2024-11-14 04:16:45,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 16 [2024-11-14 04:16:45,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:16:45,838 INFO L349 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2024-11-14 04:16:45,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 54 [2024-11-14 04:16:45,915 INFO L349 Elim1Store]: treesize reduction 94, result has 22.3 percent of original size [2024-11-14 04:16:45,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 40 [2024-11-14 04:16:45,986 INFO L349 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2024-11-14 04:16:45,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 43 [2024-11-14 04:16:47,736 INFO L349 Elim1Store]: treesize reduction 128, result has 14.7 percent of original size [2024-11-14 04:16:47,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 210 treesize of output 112 [2024-11-14 04:16:47,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:16:47,783 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2024-11-14 04:16:47,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 62 [2024-11-14 04:16:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2411 backedges. 353 proven. 27 refuted. 0 times theorem prover too weak. 2031 trivial. 0 not checked. [2024-11-14 04:16:50,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:17:13,315 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:17:13,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648645993] [2024-11-14 04:17:13,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648645993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:17:13,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1338891429] [2024-11-14 04:17:13,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:17:13,316 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:17:13,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:17:13,318 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:17:13,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2024-11-14 04:17:15,880 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-14 04:17:15,880 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:17:15,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-14 04:17:15,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:17:15,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 04:17:16,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-14 04:17:16,572 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-14 04:17:16,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-14 04:17:17,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-14 04:17:17,896 INFO L349 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2024-11-14 04:17:17,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2024-11-14 04:17:18,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 04:17:18,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 04:17:20,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 04:17:20,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 37 [2024-11-14 04:17:20,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 04:17:20,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-14 04:17:20,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:17:20,917 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 04:17:20,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 58 [2024-11-14 04:17:20,995 INFO L349 Elim1Store]: treesize reduction 18, result has 58.1 percent of original size [2024-11-14 04:17:20,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 43 [2024-11-14 04:17:21,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2024-11-14 04:17:24,419 INFO L349 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2024-11-14 04:17:24,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 211 treesize of output 113 [2024-11-14 04:17:24,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:17:24,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 04:17:24,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 62 [2024-11-14 04:17:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2411 backedges. 357 proven. 19 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2024-11-14 04:17:30,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:17:59,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1338891429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:17:59,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359858311] [2024-11-14 04:17:59,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:17:59,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:17:59,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:17:59,004 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:17:59,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47bda2-522b-4e37-9932-d3ec323f62b5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-14 04:18:39,881 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-14 04:18:39,881 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:18:39,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-14 04:18:39,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:18:39,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 04:18:42,432 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 04:18:42,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 04:18:44,712 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 04:18:44,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-14 04:18:45,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 04:18:45,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 04:18:48,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 04:18:49,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:18:49,802 INFO L349 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2024-11-14 04:18:49,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 47 [2024-11-14 04:18:49,939 INFO L349 Elim1Store]: treesize reduction 94, result has 22.3 percent of original size [2024-11-14 04:18:49,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 40 [2024-11-14 04:18:50,050 INFO L349 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2024-11-14 04:18:50,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2024-11-14 04:18:56,820 INFO L349 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2024-11-14 04:18:56,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 237 treesize of output 135 [2024-11-14 04:18:56,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 23 [2024-11-14 04:18:56,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 04:18:56,941 INFO L349 Elim1Store]: treesize reduction 85, result has 18.3 percent of original size [2024-11-14 04:18:56,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 62 [2024-11-14 04:19:03,229 INFO L349 Elim1Store]: treesize reduction 20, result has 72.6 percent of original size [2024-11-14 04:19:03,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 304 treesize of output 320 [2024-11-14 04:19:21,842 WARN L286 SmtUtils]: Spent 13.09s on a formula simplification. DAG size of input: 476 DAG size of output: 424 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-14 04:19:21,843 INFO L349 Elim1Store]: treesize reduction 120, result has 88.5 percent of original size [2024-11-14 04:19:21,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 25 new quantified variables, introduced 105 case distinctions, treesize of input 337 treesize of output 1071 [2024-11-14 04:19:22,520 INFO L224 Elim1Store]: Index analysis took 515 ms [2024-11-14 04:19:25,179 INFO L349 Elim1Store]: treesize reduction 104, result has 70.2 percent of original size [2024-11-14 04:19:25,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 125 treesize of output 333