./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje --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 1619c1c02ba7c9b660af32e6427e3b3d5cd6ca3ff286b9db386918ae0c8b508c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:07:17,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:07:17,461 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 07:07:17,468 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:07:17,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:07:17,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:07:17,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:07:17,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:07:17,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:07:17,510 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:07:17,510 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:07:17,511 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:07:17,511 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:07:17,513 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:07:17,514 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:07:17,514 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:07:17,515 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:07:17,515 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:07:17,516 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:07:17,516 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:07:17,517 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:07:17,521 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:07:17,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:07:17,522 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:07:17,522 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:07:17,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:07:17,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:07:17,523 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:07:17,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:07:17,524 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:07:17,532 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:07:17,532 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:07:17,533 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 07:07:17,533 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:07:17,533 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:07:17,534 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:07:17,534 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:07:17,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:07:17,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:07:17,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:07:17,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:07:17,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:07:17,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:07:17,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:07:17,540 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:07:17,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:07:17,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:07:17,541 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:07:17,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:07:17,541 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1619c1c02ba7c9b660af32e6427e3b3d5cd6ca3ff286b9db386918ae0c8b508c [2024-11-09 07:07:17,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:07:17,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:07:17,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:07:17,892 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:07:17,893 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:07:17,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c Unable to find full path for "g++" [2024-11-09 07:07:19,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:07:20,149 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:07:20,150 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c [2024-11-09 07:07:20,157 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/data/bf70ec653/a4210be4ce3f4c5a8cc4962edd91c672/FLAG36fdcc1f8 [2024-11-09 07:07:20,516 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/data/bf70ec653/a4210be4ce3f4c5a8cc4962edd91c672 [2024-11-09 07:07:20,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:07:20,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:07:20,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:07:20,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:07:20,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:07:20,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d93c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20, skipping insertion in model container [2024-11-09 07:07:20,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,552 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:07:20,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:07:20,756 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:07:20,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:07:20,809 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:07:20,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20 WrapperNode [2024-11-09 07:07:20,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:07:20,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:07:20,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:07:20,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:07:20,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,854 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2024-11-09 07:07:20,855 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:07:20,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:07:20,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:07:20,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:07:20,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,875 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,882 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:07:20,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:07:20,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:07:20,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:07:20,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20" (1/1) ... [2024-11-09 07:07:20,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:07:20,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:20,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:07:20,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:07:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:07:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:07:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:07:20,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:07:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 07:07:20,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 07:07:21,040 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:07:21,042 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:07:21,414 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-09 07:07:21,415 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:07:21,502 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:07:21,502 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 07:07:21,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:07:21 BoogieIcfgContainer [2024-11-09 07:07:21,503 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:07:21,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:07:21,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:07:21,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:07:21,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:07:20" (1/3) ... [2024-11-09 07:07:21,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59129eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:07:21, skipping insertion in model container [2024-11-09 07:07:21,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:07:20" (2/3) ... [2024-11-09 07:07:21,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59129eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:07:21, skipping insertion in model container [2024-11-09 07:07:21,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:07:21" (3/3) ... [2024-11-09 07:07:21,515 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound20.c [2024-11-09 07:07:21,531 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:07:21,532 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-09 07:07:21,590 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:07:21,597 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;@5384aca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:07:21,597 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-09 07:07:21,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 32 states have (on average 1.90625) internal successors, (61), 56 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 07:07:21,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 07:07:21,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:21,610 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 07:07:21,611 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:21,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash 5353265, now seen corresponding path program 1 times [2024-11-09 07:07:21,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:21,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42479255] [2024-11-09 07:07:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:21,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:07:21,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:21,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42479255] [2024-11-09 07:07:21,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42479255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:21,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:07:21,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:07:21,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400067315] [2024-11-09 07:07:21,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:21,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 07:07:21,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:21,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 07:07:21,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:07:21,871 INFO L87 Difference]: Start difference. First operand has 65 states, 32 states have (on average 1.90625) internal successors, (61), 56 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:07:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:21,912 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2024-11-09 07:07:21,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 07:07:21,914 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-09 07:07:21,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:21,921 INFO L225 Difference]: With dead ends: 112 [2024-11-09 07:07:21,922 INFO L226 Difference]: Without dead ends: 61 [2024-11-09 07:07:21,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:07:21,929 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:21,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:07:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-09 07:07:21,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-09 07:07:21,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 54 states have internal predecessors, (57), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:07:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2024-11-09 07:07:21,965 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 4 [2024-11-09 07:07:21,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:21,966 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2024-11-09 07:07:21,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:07:21,967 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2024-11-09 07:07:21,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 07:07:21,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:21,968 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:21,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:07:21,968 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:21,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:21,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1735968466, now seen corresponding path program 1 times [2024-11-09 07:07:21,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:21,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998835632] [2024-11-09 07:07:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:21,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:07:21,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102892777] [2024-11-09 07:07:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:21,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:21,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:21,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:22,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:07:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:22,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:07:22,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:07:22,152 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:07:22,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:22,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998835632] [2024-11-09 07:07:22,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:07:22,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102892777] [2024-11-09 07:07:22,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102892777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:22,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:07:22,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:07:22,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068882079] [2024-11-09 07:07:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:22,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:07:22,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:22,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:07:22,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:07:22,157 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 07:07:22,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:22,291 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2024-11-09 07:07:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:07:22,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 9 [2024-11-09 07:07:22,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:22,293 INFO L225 Difference]: With dead ends: 131 [2024-11-09 07:07:22,293 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 07:07:22,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:07:22,295 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 16 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:22,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 85 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:07:22,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 07:07:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-11-09 07:07:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.702127659574468) internal successors, (80), 70 states have internal predecessors, (80), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 07:07:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-11-09 07:07:22,308 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 9 [2024-11-09 07:07:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:22,309 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-11-09 07:07:22,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 07:07:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-11-09 07:07:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 07:07:22,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:22,310 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:22,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:07:22,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:22,511 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:22,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:22,514 INFO L85 PathProgramCache]: Analyzing trace with hash -17467134, now seen corresponding path program 1 times [2024-11-09 07:07:22,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:22,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488638566] [2024-11-09 07:07:22,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:22,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:07:22,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:22,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488638566] [2024-11-09 07:07:22,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488638566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:22,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:07:22,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:07:22,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801511157] [2024-11-09 07:07:22,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:22,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:07:22,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:22,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:07:22,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:07:22,827 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:07:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:22,904 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2024-11-09 07:07:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:07:22,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 15 [2024-11-09 07:07:22,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:22,908 INFO L225 Difference]: With dead ends: 92 [2024-11-09 07:07:22,908 INFO L226 Difference]: Without dead ends: 90 [2024-11-09 07:07:22,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:07:22,910 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:22,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 96 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:07:22,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-09 07:07:22,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2024-11-09 07:07:22,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.6595744680851063) internal successors, (78), 70 states have internal predecessors, (78), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 07:07:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2024-11-09 07:07:22,924 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 15 [2024-11-09 07:07:22,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:22,925 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2024-11-09 07:07:22,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:07:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2024-11-09 07:07:22,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 07:07:22,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:22,926 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:22,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:07:22,930 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:22,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:22,931 INFO L85 PathProgramCache]: Analyzing trace with hash -541482501, now seen corresponding path program 1 times [2024-11-09 07:07:22,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:22,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16820134] [2024-11-09 07:07:22,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:22,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:07:22,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994785097] [2024-11-09 07:07:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:22,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:22,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:22,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:07:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:23,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:07:23,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:07:23,087 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:07:23,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:23,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16820134] [2024-11-09 07:07:23,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:07:23,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994785097] [2024-11-09 07:07:23,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994785097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:23,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:07:23,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:07:23,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009144232] [2024-11-09 07:07:23,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:23,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:07:23,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:23,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:07:23,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:07:23,095 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:07:23,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:23,229 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2024-11-09 07:07:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:07:23,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2024-11-09 07:07:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:23,231 INFO L225 Difference]: With dead ends: 117 [2024-11-09 07:07:23,231 INFO L226 Difference]: Without dead ends: 113 [2024-11-09 07:07:23,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:07:23,232 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 39 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:23,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 78 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:07:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-09 07:07:23,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 99. [2024-11-09 07:07:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 62 states have (on average 1.6290322580645162) internal successors, (101), 85 states have internal predecessors, (101), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 07:07:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2024-11-09 07:07:23,247 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 16 [2024-11-09 07:07:23,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:23,247 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2024-11-09 07:07:23,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:07:23,248 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2024-11-09 07:07:23,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 07:07:23,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:23,249 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:23,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:07:23,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:23,450 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:23,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:23,450 INFO L85 PathProgramCache]: Analyzing trace with hash -673638051, now seen corresponding path program 1 times [2024-11-09 07:07:23,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:23,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525489353] [2024-11-09 07:07:23,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:23,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:23,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:07:23,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:23,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525489353] [2024-11-09 07:07:23,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525489353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:23,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:07:23,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:07:23,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718513255] [2024-11-09 07:07:23,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:23,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:07:23,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:23,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:07:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:07:23,650 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 07:07:24,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:24,200 INFO L93 Difference]: Finished difference Result 115 states and 139 transitions. [2024-11-09 07:07:24,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:07:24,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2024-11-09 07:07:24,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:24,202 INFO L225 Difference]: With dead ends: 115 [2024-11-09 07:07:24,202 INFO L226 Difference]: Without dead ends: 114 [2024-11-09 07:07:24,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:07:24,204 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 129 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:24,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 68 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:07:24,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-09 07:07:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2024-11-09 07:07:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.5909090909090908) internal successors, (105), 89 states have internal predecessors, (105), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 07:07:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2024-11-09 07:07:24,240 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 18 [2024-11-09 07:07:24,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:24,244 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2024-11-09 07:07:24,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 07:07:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2024-11-09 07:07:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:07:24,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:24,245 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:24,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:07:24,246 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:24,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:24,247 INFO L85 PathProgramCache]: Analyzing trace with hash 592056984, now seen corresponding path program 1 times [2024-11-09 07:07:24,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:24,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768328235] [2024-11-09 07:07:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:24,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:07:24,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768328235] [2024-11-09 07:07:24,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768328235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:24,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:07:24,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:07:24,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51301376] [2024-11-09 07:07:24,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:24,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:07:24,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:07:24,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:07:24,372 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:07:24,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:24,792 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2024-11-09 07:07:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:07:24,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2024-11-09 07:07:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:24,793 INFO L225 Difference]: With dead ends: 110 [2024-11-09 07:07:24,794 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 07:07:24,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:07:24,795 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 74 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:24,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 101 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:07:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 07:07:24,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2024-11-09 07:07:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 90 states have internal predecessors, (104), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 07:07:24,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2024-11-09 07:07:24,823 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 19 [2024-11-09 07:07:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:24,823 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2024-11-09 07:07:24,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 07:07:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2024-11-09 07:07:24,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 07:07:24,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:24,825 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:24,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:07:24,825 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:24,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash -682443809, now seen corresponding path program 1 times [2024-11-09 07:07:24,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:24,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957693218] [2024-11-09 07:07:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:24,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:07:24,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772799881] [2024-11-09 07:07:24,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:24,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:24,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:24,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:24,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:07:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:24,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:07:24,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 07:07:25,078 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:07:25,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:25,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957693218] [2024-11-09 07:07:25,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:07:25,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772799881] [2024-11-09 07:07:25,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772799881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:25,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:07:25,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:07:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803202478] [2024-11-09 07:07:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:25,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:07:25,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:25,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:07:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:07:25,081 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:07:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:25,208 INFO L93 Difference]: Finished difference Result 120 states and 148 transitions. [2024-11-09 07:07:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:07:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 26 [2024-11-09 07:07:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:25,209 INFO L225 Difference]: With dead ends: 120 [2024-11-09 07:07:25,210 INFO L226 Difference]: Without dead ends: 110 [2024-11-09 07:07:25,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:07:25,211 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 38 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:25,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 97 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:07:25,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-09 07:07:25,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-09 07:07:25,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 94 states have internal predecessors, (107), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 07:07:25,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2024-11-09 07:07:25,242 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 26 [2024-11-09 07:07:25,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:25,256 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2024-11-09 07:07:25,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:07:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2024-11-09 07:07:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 07:07:25,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:25,258 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:25,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 07:07:25,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:25,463 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:25,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:25,464 INFO L85 PathProgramCache]: Analyzing trace with hash 319078454, now seen corresponding path program 1 times [2024-11-09 07:07:25,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:25,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949469722] [2024-11-09 07:07:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:25,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:07:25,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242595477] [2024-11-09 07:07:25,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:25,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:25,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:25,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:25,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:07:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:25,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:07:25,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 07:07:25,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:07:26,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:26,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949469722] [2024-11-09 07:07:26,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:07:26,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242595477] [2024-11-09 07:07:26,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242595477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:07:26,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [253923893] [2024-11-09 07:07:26,331 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 07:07:26,332 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:07:26,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:07:26,343 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:07:26,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:07:28,919 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-09 07:07:28,924 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:07:29,720 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2072#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~A~0#1| 20) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-09 07:07:29,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:07:29,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:07:29,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2024-11-09 07:07:29,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062918754] [2024-11-09 07:07:29,721 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:07:29,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:07:29,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:29,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:07:29,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:07:29,723 INFO L87 Difference]: Start difference. First operand 110 states and 135 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:07:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:29,851 INFO L93 Difference]: Finished difference Result 186 states and 239 transitions. [2024-11-09 07:07:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:07:29,852 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2024-11-09 07:07:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:29,854 INFO L225 Difference]: With dead ends: 186 [2024-11-09 07:07:29,854 INFO L226 Difference]: Without dead ends: 182 [2024-11-09 07:07:29,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:07:29,856 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 59 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:29,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 90 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:07:29,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-09 07:07:29,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2024-11-09 07:07:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 126 states have (on average 1.4206349206349207) internal successors, (179), 145 states have internal predecessors, (179), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 07:07:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 225 transitions. [2024-11-09 07:07:29,878 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 225 transitions. Word has length 27 [2024-11-09 07:07:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:29,879 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 225 transitions. [2024-11-09 07:07:29,879 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:07:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 225 transitions. [2024-11-09 07:07:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 07:07:29,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:29,880 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:29,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:07:30,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:30,085 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:30,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:30,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1516011015, now seen corresponding path program 1 times [2024-11-09 07:07:30,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:30,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210707773] [2024-11-09 07:07:30,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:30,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 07:07:30,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:30,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210707773] [2024-11-09 07:07:30,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210707773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:30,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:07:30,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:07:30,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066105569] [2024-11-09 07:07:30,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:30,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:07:30,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:30,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:07:30,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:07:30,189 INFO L87 Difference]: Start difference. First operand 170 states and 225 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:07:30,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:30,763 INFO L93 Difference]: Finished difference Result 182 states and 237 transitions. [2024-11-09 07:07:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:07:30,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2024-11-09 07:07:30,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:30,765 INFO L225 Difference]: With dead ends: 182 [2024-11-09 07:07:30,766 INFO L226 Difference]: Without dead ends: 181 [2024-11-09 07:07:30,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:07:30,767 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 49 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:30,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 129 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:07:30,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-09 07:07:30,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2024-11-09 07:07:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 127 states have (on average 1.4173228346456692) internal successors, (180), 146 states have internal predecessors, (180), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 07:07:30,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2024-11-09 07:07:30,795 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 31 [2024-11-09 07:07:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:30,795 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2024-11-09 07:07:30,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:07:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2024-11-09 07:07:30,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 07:07:30,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:30,796 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:30,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 07:07:30,797 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:30,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash 918975219, now seen corresponding path program 1 times [2024-11-09 07:07:30,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:30,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834854308] [2024-11-09 07:07:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:30,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 07:07:30,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834854308] [2024-11-09 07:07:30,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834854308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:07:30,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979436064] [2024-11-09 07:07:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:30,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:30,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:30,865 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:30,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:07:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:30,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:07:30,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 07:07:30,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:07:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979436064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:30,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:07:30,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-09 07:07:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033795933] [2024-11-09 07:07:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:30,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:07:30,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:30,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:07:30,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:07:30,967 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 07:07:31,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:31,074 INFO L93 Difference]: Finished difference Result 254 states and 347 transitions. [2024-11-09 07:07:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:07:31,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 32 [2024-11-09 07:07:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:31,076 INFO L225 Difference]: With dead ends: 254 [2024-11-09 07:07:31,077 INFO L226 Difference]: Without dead ends: 252 [2024-11-09 07:07:31,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:07:31,078 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 49 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:31,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 116 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:07:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-09 07:07:31,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 232. [2024-11-09 07:07:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 181 states have (on average 1.430939226519337) internal successors, (259), 199 states have internal predecessors, (259), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-09 07:07:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 321 transitions. [2024-11-09 07:07:31,105 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 321 transitions. Word has length 32 [2024-11-09 07:07:31,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:31,106 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 321 transitions. [2024-11-09 07:07:31,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 07:07:31,106 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 321 transitions. [2024-11-09 07:07:31,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 07:07:31,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:31,107 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:31,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 07:07:31,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:31,310 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:31,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:31,311 INFO L85 PathProgramCache]: Analyzing trace with hash 248298920, now seen corresponding path program 1 times [2024-11-09 07:07:31,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:31,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641384299] [2024-11-09 07:07:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:31,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 07:07:31,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641384299] [2024-11-09 07:07:31,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641384299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:31,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:07:31,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:07:31,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33806774] [2024-11-09 07:07:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:31,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:07:31,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:07:31,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:07:31,414 INFO L87 Difference]: Start difference. First operand 232 states and 321 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:07:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:31,543 INFO L93 Difference]: Finished difference Result 237 states and 325 transitions. [2024-11-09 07:07:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:07:31,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-11-09 07:07:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:31,545 INFO L225 Difference]: With dead ends: 237 [2024-11-09 07:07:31,545 INFO L226 Difference]: Without dead ends: 222 [2024-11-09 07:07:31,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:07:31,546 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 19 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:31,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 90 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:07:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-09 07:07:31,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2024-11-09 07:07:31,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 173 states have (on average 1.4450867052023122) internal successors, (250), 191 states have internal predecessors, (250), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-09 07:07:31,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 308 transitions. [2024-11-09 07:07:31,576 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 308 transitions. Word has length 32 [2024-11-09 07:07:31,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:31,577 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 308 transitions. [2024-11-09 07:07:31,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 07:07:31,577 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 308 transitions. [2024-11-09 07:07:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 07:07:31,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:31,578 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 07:07:31,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 07:07:31,578 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:31,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1576539220, now seen corresponding path program 1 times [2024-11-09 07:07:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:31,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545943310] [2024-11-09 07:07:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:31,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 07:07:31,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:31,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545943310] [2024-11-09 07:07:31,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545943310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:07:31,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097292875] [2024-11-09 07:07:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:31,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:31,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:31,653 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:31,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:07:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:31,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:07:31,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:31,749 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 07:07:31,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:07:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 07:07:31,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097292875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:07:31,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [441736276] [2024-11-09 07:07:31,820 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 07:07:31,820 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:07:31,820 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:07:31,821 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:07:31,821 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:07:33,433 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-09 07:07:33,435 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:07:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [441736276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:34,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:07:34,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [3, 3, 3] total 17 [2024-11-09 07:07:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530084177] [2024-11-09 07:07:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:34,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 07:07:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 07:07:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:07:34,132 INFO L87 Difference]: Start difference. First operand 222 states and 308 transitions. Second operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 07:07:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:35,008 INFO L93 Difference]: Finished difference Result 233 states and 318 transitions. [2024-11-09 07:07:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:07:35,009 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-09 07:07:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:35,012 INFO L225 Difference]: With dead ends: 233 [2024-11-09 07:07:35,012 INFO L226 Difference]: Without dead ends: 221 [2024-11-09 07:07:35,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2024-11-09 07:07:35,013 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 128 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:35,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 74 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:07:35,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-09 07:07:35,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 190. [2024-11-09 07:07:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 148 states have (on average 1.3918918918918919) internal successors, (206), 163 states have internal predecessors, (206), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 07:07:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 256 transitions. [2024-11-09 07:07:35,046 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 256 transitions. Word has length 33 [2024-11-09 07:07:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:35,047 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 256 transitions. [2024-11-09 07:07:35,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 07:07:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 256 transitions. [2024-11-09 07:07:35,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 07:07:35,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:35,051 INFO L215 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:35,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 07:07:35,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:35,252 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:35,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash -614957125, now seen corresponding path program 1 times [2024-11-09 07:07:35,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:35,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729803411] [2024-11-09 07:07:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:35,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 07:07:35,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:35,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729803411] [2024-11-09 07:07:35,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729803411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:35,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:07:35,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:07:35,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857008300] [2024-11-09 07:07:35,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:35,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:07:35,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:35,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:07:35,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:07:35,309 INFO L87 Difference]: Start difference. First operand 190 states and 256 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:07:35,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:35,428 INFO L93 Difference]: Finished difference Result 190 states and 256 transitions. [2024-11-09 07:07:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:07:35,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2024-11-09 07:07:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:35,431 INFO L225 Difference]: With dead ends: 190 [2024-11-09 07:07:35,431 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 07:07:35,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:07:35,432 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:35,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 83 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:07:35,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 07:07:35,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-09 07:07:35,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.364864864864865) internal successors, (202), 162 states have internal predecessors, (202), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 07:07:35,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 252 transitions. [2024-11-09 07:07:35,459 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 252 transitions. Word has length 51 [2024-11-09 07:07:35,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:35,459 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 252 transitions. [2024-11-09 07:07:35,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:07:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 252 transitions. [2024-11-09 07:07:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 07:07:35,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:35,461 INFO L215 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:35,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 07:07:35,461 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:35,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:35,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1883801580, now seen corresponding path program 1 times [2024-11-09 07:07:35,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:35,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379122588] [2024-11-09 07:07:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:35,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:07:35,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:35,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379122588] [2024-11-09 07:07:35,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379122588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:07:35,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847976847] [2024-11-09 07:07:35,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:35,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:35,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:35,643 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:35,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:07:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:35,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:07:35,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:07:35,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:07:35,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847976847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:35,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:07:35,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-09 07:07:35,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617265738] [2024-11-09 07:07:35,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:35,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:07:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:35,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:07:35,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:07:35,894 INFO L87 Difference]: Start difference. First operand 189 states and 252 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:07:36,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:36,057 INFO L93 Difference]: Finished difference Result 225 states and 291 transitions. [2024-11-09 07:07:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:07:36,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2024-11-09 07:07:36,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:36,060 INFO L225 Difference]: With dead ends: 225 [2024-11-09 07:07:36,061 INFO L226 Difference]: Without dead ends: 224 [2024-11-09 07:07:36,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:07:36,062 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 23 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:36,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 89 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:07:36,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-09 07:07:36,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 189. [2024-11-09 07:07:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.3513513513513513) internal successors, (200), 162 states have internal predecessors, (200), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 07:07:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 250 transitions. [2024-11-09 07:07:36,097 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 250 transitions. Word has length 52 [2024-11-09 07:07:36,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:36,098 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 250 transitions. [2024-11-09 07:07:36,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 07:07:36,098 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 250 transitions. [2024-11-09 07:07:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 07:07:36,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:36,100 INFO L215 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:36,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 07:07:36,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:36,301 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:36,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1731693277, now seen corresponding path program 1 times [2024-11-09 07:07:36,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:36,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203431377] [2024-11-09 07:07:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:36,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:07:36,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:36,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203431377] [2024-11-09 07:07:36,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203431377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:07:36,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630884103] [2024-11-09 07:07:36,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:36,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:36,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:36,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:36,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:07:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:36,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:07:36,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 07:07:36,752 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:07:36,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630884103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:36,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:07:36,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-09 07:07:36,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460972217] [2024-11-09 07:07:36,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:36,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:07:36,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:07:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:07:36,755 INFO L87 Difference]: Start difference. First operand 189 states and 250 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:07:36,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:36,904 INFO L93 Difference]: Finished difference Result 199 states and 264 transitions. [2024-11-09 07:07:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:07:36,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2024-11-09 07:07:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:36,906 INFO L225 Difference]: With dead ends: 199 [2024-11-09 07:07:36,907 INFO L226 Difference]: Without dead ends: 198 [2024-11-09 07:07:36,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:07:36,909 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 38 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:36,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 96 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:07:36,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-09 07:07:36,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2024-11-09 07:07:36,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 154 states have (on average 1.3376623376623376) internal successors, (206), 168 states have internal predecessors, (206), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 07:07:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 256 transitions. [2024-11-09 07:07:36,947 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 256 transitions. Word has length 53 [2024-11-09 07:07:36,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:36,949 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 256 transitions. [2024-11-09 07:07:36,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:07:36,949 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 256 transitions. [2024-11-09 07:07:36,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 07:07:36,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:36,952 INFO L215 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:36,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 07:07:37,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 07:07:37,153 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:37,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:37,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2142884150, now seen corresponding path program 1 times [2024-11-09 07:07:37,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:37,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762212328] [2024-11-09 07:07:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:37,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:07:37,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:37,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762212328] [2024-11-09 07:07:37,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762212328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:07:37,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22613388] [2024-11-09 07:07:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:37,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:37,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:37,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:37,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:07:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:37,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:07:37,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 07:07:37,562 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:07:37,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22613388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:37,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:07:37,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 07:07:37,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862590387] [2024-11-09 07:07:37,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:37,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:07:37,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:37,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:07:37,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:07:37,565 INFO L87 Difference]: Start difference. First operand 195 states and 256 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:07:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:37,766 INFO L93 Difference]: Finished difference Result 199 states and 260 transitions. [2024-11-09 07:07:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:07:37,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2024-11-09 07:07:37,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:37,768 INFO L225 Difference]: With dead ends: 199 [2024-11-09 07:07:37,768 INFO L226 Difference]: Without dead ends: 198 [2024-11-09 07:07:37,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:07:37,769 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:37,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 83 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:07:37,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-09 07:07:37,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2024-11-09 07:07:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 156 states have (on average 1.3205128205128205) internal successors, (206), 170 states have internal predecessors, (206), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 07:07:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 256 transitions. [2024-11-09 07:07:37,801 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 256 transitions. Word has length 54 [2024-11-09 07:07:37,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:37,802 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 256 transitions. [2024-11-09 07:07:37,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:07:37,802 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 256 transitions. [2024-11-09 07:07:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 07:07:37,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:37,803 INFO L215 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:37,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 07:07:38,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 07:07:38,008 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:07:38,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2022335832, now seen corresponding path program 1 times [2024-11-09 07:07:38,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:07:38,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216020855] [2024-11-09 07:07:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:07:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:07:38,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093772819] [2024-11-09 07:07:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:38,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:38,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:38,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:38,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 07:07:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:38,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:07:38,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 07:07:38,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:07:38,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:07:38,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216020855] [2024-11-09 07:07:38,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:07:38,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093772819] [2024-11-09 07:07:38,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093772819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:07:38,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2018561660] [2024-11-09 07:07:38,974 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:07:38,974 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:07:38,975 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:07:38,975 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:07:38,975 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:07:42,914 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:07:42,915 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:07:51,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2018561660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:07:51,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:07:51,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [5] total 29 [2024-11-09 07:07:51,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184506624] [2024-11-09 07:07:51,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:07:51,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 07:07:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:07:51,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 07:07:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=908, Unknown=2, NotChecked=0, Total=1122 [2024-11-09 07:07:51,102 INFO L87 Difference]: Start difference. First operand 197 states and 256 transitions. Second operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:07:55,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:07:57,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:08:04,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:08:06,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:08:08,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:08:10,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:08:12,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:08:14,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:08:16,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:08:18,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:08:20,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:08:22,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-09 07:08:24,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:08:26,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:08:39,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:08:54,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 07:08:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:56,080 INFO L93 Difference]: Finished difference Result 220 states and 292 transitions. [2024-11-09 07:08:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 07:08:56,081 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2024-11-09 07:08:56,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:56,082 INFO L225 Difference]: With dead ends: 220 [2024-11-09 07:08:56,082 INFO L226 Difference]: Without dead ends: 212 [2024-11-09 07:08:56,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 39.8s TimeCoverageRelationStatistics Valid=709, Invalid=2356, Unknown=15, NotChecked=0, Total=3080 [2024-11-09 07:08:56,084 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 519 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 228 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:56,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 49 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 721 Invalid, 16 Unknown, 0 Unchecked, 33.4s Time] [2024-11-09 07:08:56,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-09 07:08:56,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 76. [2024-11-09 07:08:56,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 64 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 07:08:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2024-11-09 07:08:56,109 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 56 [2024-11-09 07:08:56,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:56,110 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2024-11-09 07:08:56,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:08:56,110 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2024-11-09 07:08:56,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 07:08:56,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:56,111 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:08:56,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 07:08:56,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 07:08:56,315 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:08:56,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:56,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1900590619, now seen corresponding path program 1 times [2024-11-09 07:08:56,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:08:56,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385076241] [2024-11-09 07:08:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:56,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:08:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:08:56,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:08:56,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385076241] [2024-11-09 07:08:56,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385076241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:08:56,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663421253] [2024-11-09 07:08:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:56,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:08:56,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:08:56,595 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:08:56,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 07:08:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:56,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 07:08:56,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 07:08:57,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:08:58,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663421253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:08:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [256750552] [2024-11-09 07:08:58,345 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:08:58,346 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:08:58,346 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:08:58,346 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:08:58,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:09:01,227 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:09:01,228 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:09:08,876 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8203#(exists ((|v_ULTIMATE.start_main_~B~0#1_43| Int) (|v_ULTIMATE.start_main_~r~0#1_49| Int) (|v_ULTIMATE.start_main_~q~0#1_55| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_55| |v_ULTIMATE.start_main_~r~0#1_49|)) (<= |ULTIMATE.start_main_~A~0#1| 20) (<= |v_ULTIMATE.start_main_~r~0#1_49| 2147483647) (= |v_ULTIMATE.start_main_~B~0#1_43| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |v_ULTIMATE.start_main_~r~0#1_49|)) (<= |v_ULTIMATE.start_main_~q~0#1_55| 2147483647)))' at error location [2024-11-09 07:09:08,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:09:08,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:09:08,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-09 07:09:08,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082327178] [2024-11-09 07:09:08,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:09:08,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 07:09:08,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:09:08,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 07:09:08,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1787, Unknown=2, NotChecked=0, Total=1980 [2024-11-09 07:09:08,879 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 16 states, 15 states have (on average 4.733333333333333) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 07:09:10,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:09:10,797 INFO L93 Difference]: Finished difference Result 309 states and 392 transitions. [2024-11-09 07:09:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 07:09:10,798 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.733333333333333) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 59 [2024-11-09 07:09:10,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:09:10,799 INFO L225 Difference]: With dead ends: 309 [2024-11-09 07:09:10,799 INFO L226 Difference]: Without dead ends: 304 [2024-11-09 07:09:10,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 93 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=408, Invalid=3372, Unknown=2, NotChecked=0, Total=3782 [2024-11-09 07:09:10,802 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 467 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:09:10,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 184 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 07:09:10,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-09 07:09:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 181. [2024-11-09 07:09:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 149 states have (on average 1.174496644295302) internal successors, (175), 156 states have internal predecessors, (175), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 07:09:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 221 transitions. [2024-11-09 07:09:10,859 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 221 transitions. Word has length 59 [2024-11-09 07:09:10,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:09:10,859 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 221 transitions. [2024-11-09 07:09:10,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.733333333333333) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 07:09:10,860 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 221 transitions. [2024-11-09 07:09:10,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 07:09:10,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:09:10,861 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2024-11-09 07:09:10,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 07:09:11,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 07:09:11,079 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:09:11,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash -485460006, now seen corresponding path program 1 times [2024-11-09 07:09:11,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:09:11,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666002664] [2024-11-09 07:09:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:11,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:09:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:09:11,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024083559] [2024-11-09 07:09:11,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:11,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:11,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:09:11,102 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:09:11,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 07:09:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:11,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:09:11,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 07:09:11,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:09:12,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:09:12,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666002664] [2024-11-09 07:09:12,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:09:12,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024083559] [2024-11-09 07:09:12,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024083559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:09:12,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1964256632] [2024-11-09 07:09:12,279 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-09 07:09:12,279 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:09:12,279 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:09:12,279 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:09:12,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:09:15,130 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:09:15,131 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:09:25,777 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9139#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 20) (exists ((|v_ULTIMATE.start_main_~q~0#1_61| Int) (|v_ULTIMATE.start_main_~d~0#1_97| Int)) (and (<= 0 (+ 2147483647 |v_ULTIMATE.start_main_~d~0#1_97|)) (<= |v_ULTIMATE.start_main_~q~0#1_61| 2147483647) (<= |v_ULTIMATE.start_main_~d~0#1_97| 2147483647) (<= (+ (* |v_ULTIMATE.start_main_~q~0#1_61| |v_ULTIMATE.start_main_~d~0#1_97|) 2147483649) 0) (<= 0 (+ |v_ULTIMATE.start_main_~q~0#1_61| 2147483648)))) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-09 07:09:25,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:09:25,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:09:25,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-09 07:09:25,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268104604] [2024-11-09 07:09:25,777 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:09:25,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:09:25,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:09:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:09:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1334, Unknown=2, NotChecked=0, Total=1560 [2024-11-09 07:09:25,779 INFO L87 Difference]: Start difference. First operand 181 states and 221 transitions. Second operand has 10 states, 8 states have (on average 5.125) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-09 07:09:26,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:09:26,226 INFO L93 Difference]: Finished difference Result 208 states and 244 transitions. [2024-11-09 07:09:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:09:26,227 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 69 [2024-11-09 07:09:26,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:09:26,228 INFO L225 Difference]: With dead ends: 208 [2024-11-09 07:09:26,228 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 07:09:26,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=224, Invalid=1334, Unknown=2, NotChecked=0, Total=1560 [2024-11-09 07:09:26,230 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:09:26,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 120 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:09:26,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 07:09:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2024-11-09 07:09:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 100 states have internal predecessors, (105), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 07:09:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2024-11-09 07:09:26,269 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 69 [2024-11-09 07:09:26,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:09:26,270 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2024-11-09 07:09:26,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-09 07:09:26,270 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2024-11-09 07:09:26,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 07:09:26,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:09:26,271 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-09 07:09:26,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 07:09:26,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:26,476 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:09:26,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1624373500, now seen corresponding path program 1 times [2024-11-09 07:09:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:09:26,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729010569] [2024-11-09 07:09:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:26,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:09:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:09:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-09 07:09:26,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:09:26,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729010569] [2024-11-09 07:09:26,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729010569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:09:26,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:09:26,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:09:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897391731] [2024-11-09 07:09:26,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:09:26,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:09:26,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:09:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:09:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:09:26,572 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:09:27,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:09:27,087 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2024-11-09 07:09:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:09:27,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2024-11-09 07:09:27,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:09:27,089 INFO L225 Difference]: With dead ends: 119 [2024-11-09 07:09:27,089 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 07:09:27,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:09:27,090 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:09:27,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 77 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:09:27,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 07:09:27,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-09 07:09:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 71 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 07:09:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2024-11-09 07:09:27,121 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 71 [2024-11-09 07:09:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:09:27,122 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2024-11-09 07:09:27,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:09:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2024-11-09 07:09:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 07:09:27,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:09:27,123 INFO L215 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2024-11-09 07:09:27,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 07:09:27,123 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:09:27,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:27,124 INFO L85 PathProgramCache]: Analyzing trace with hash 530533004, now seen corresponding path program 2 times [2024-11-09 07:09:27,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:09:27,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99247769] [2024-11-09 07:09:27,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:09:27,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:09:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:09:27,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294511891] [2024-11-09 07:09:27,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:09:27,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:27,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:09:27,156 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:09:27,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 07:09:27,213 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 07:09:27,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:09:27,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:09:27,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-09 07:09:27,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:09:38,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:09:38,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99247769] [2024-11-09 07:09:38,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:09:38,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294511891] [2024-11-09 07:09:38,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294511891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:09:38,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1441951822] [2024-11-09 07:09:38,618 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:09:38,618 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:09:38,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:09:38,619 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:09:38,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:09:41,652 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:09:41,654 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:10:09,163 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10117#(exists ((|v_ULTIMATE.start_main_~q~0#1_67| Int) (|v_ULTIMATE.start_main_~r~0#1_59| Int) (|v_ULTIMATE.start_main_~B~0#1_46| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |v_ULTIMATE.start_main_~r~0#1_59| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 20) (= |v_ULTIMATE.start_main_~B~0#1_46| 1) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_67| |v_ULTIMATE.start_main_~r~0#1_59|)) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= |v_ULTIMATE.start_main_~q~0#1_67| 2147483647)))' at error location [2024-11-09 07:10:09,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:10:09,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:10:09,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-09 07:10:09,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342931011] [2024-11-09 07:10:09,164 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:10:09,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:10:09,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:10:09,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:10:09,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1354, Unknown=11, NotChecked=0, Total=1722 [2024-11-09 07:10:09,165 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 10 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:10:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:10:09,569 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2024-11-09 07:10:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:10:09,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-09 07:10:09,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:10:09,573 INFO L225 Difference]: With dead ends: 123 [2024-11-09 07:10:09,573 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 07:10:09,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 36.8s TimeCoverageRelationStatistics Valid=357, Invalid=1354, Unknown=11, NotChecked=0, Total=1722 [2024-11-09 07:10:09,575 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:10:09,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 59 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:10:09,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 07:10:09,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2024-11-09 07:10:09,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 71 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 07:10:09,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2024-11-09 07:10:09,600 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 76 [2024-11-09 07:10:09,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:10:09,601 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2024-11-09 07:10:09,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 07:10:09,601 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2024-11-09 07:10:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 07:10:09,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:10:09,602 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:10:09,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 07:10:09,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:10:09,806 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:10:09,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:10:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash 238088971, now seen corresponding path program 2 times [2024-11-09 07:10:09,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:10:09,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040746653] [2024-11-09 07:10:09,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:10:09,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:10:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:10:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:10:10,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:10:10,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040746653] [2024-11-09 07:10:10,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040746653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:10:10,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775029959] [2024-11-09 07:10:10,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:10:10,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:10:10,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:10:10,035 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:10:10,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 07:10:10,104 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:10:10,104 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:10:10,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:10:10,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:10:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:10:10,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:10:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:10:10,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775029959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:10:10,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [28993104] [2024-11-09 07:10:10,547 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-09 07:10:10,550 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:10:10,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:10:10,551 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:10:10,551 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:10:12,929 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:10:12,930 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:10:19,654 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10917#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 20) (exists ((|v_ULTIMATE.start_main_~d~0#1_121| Int) (|v_ULTIMATE.start_main_~q~0#1_72| Int)) (and (<= |v_ULTIMATE.start_main_~d~0#1_121| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~q~0#1_72| 2147483648)) (<= |v_ULTIMATE.start_main_~q~0#1_72| 2147483647) (<= 0 (+ 2147483647 |v_ULTIMATE.start_main_~d~0#1_121|)) (<= (+ 2147483649 (* |v_ULTIMATE.start_main_~q~0#1_72| |v_ULTIMATE.start_main_~d~0#1_121|)) 0))) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-09 07:10:19,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:10:19,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:10:19,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2024-11-09 07:10:19,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156188003] [2024-11-09 07:10:19,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:10:19,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:10:19,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:10:19,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:10:19,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=850, Unknown=2, NotChecked=0, Total=992 [2024-11-09 07:10:19,658 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 07:10:19,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:10:19,878 INFO L93 Difference]: Finished difference Result 136 states and 158 transitions. [2024-11-09 07:10:19,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:10:19,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 86 [2024-11-09 07:10:19,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:10:19,883 INFO L225 Difference]: With dead ends: 136 [2024-11-09 07:10:19,883 INFO L226 Difference]: Without dead ends: 129 [2024-11-09 07:10:19,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 224 SyntacticMatches, 10 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=140, Invalid=850, Unknown=2, NotChecked=0, Total=992 [2024-11-09 07:10:19,884 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 30 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:10:19,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 103 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:10:19,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-09 07:10:19,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2024-11-09 07:10:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 90 states have (on average 1.1222222222222222) internal successors, (101), 96 states have internal predecessors, (101), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 07:10:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2024-11-09 07:10:19,926 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 86 [2024-11-09 07:10:19,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:10:19,926 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2024-11-09 07:10:19,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 07:10:19,927 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2024-11-09 07:10:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-09 07:10:19,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:10:19,928 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 07:10:19,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 07:10:20,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:10:20,132 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:10:20,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:10:20,134 INFO L85 PathProgramCache]: Analyzing trace with hash -804474729, now seen corresponding path program 1 times [2024-11-09 07:10:20,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:10:20,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76188739] [2024-11-09 07:10:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:10:20,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:10:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:10:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:10:20,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:10:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76188739] [2024-11-09 07:10:20,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76188739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:10:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796990795] [2024-11-09 07:10:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:10:20,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:10:20,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:10:20,541 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:10:20,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 07:10:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:10:20,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 07:10:20,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:10:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:10:21,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:10:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:10:23,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796990795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:10:23,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1126800926] [2024-11-09 07:10:23,730 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:10:23,732 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:10:23,732 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:10:23,732 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:10:23,733 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:10:26,918 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:10:26,920 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:10:57,272 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11822#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~A~0#1| 20) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-09 07:10:57,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:10:57,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:10:57,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6] total 24 [2024-11-09 07:10:57,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188850999] [2024-11-09 07:10:57,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:10:57,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 07:10:57,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:10:57,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 07:10:57,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=2117, Unknown=8, NotChecked=0, Total=2450 [2024-11-09 07:10:57,276 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 25 states have internal predecessors, (160), 13 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) [2024-11-09 07:10:59,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:10:59,914 INFO L93 Difference]: Finished difference Result 384 states and 467 transitions. [2024-11-09 07:10:59,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 07:10:59,915 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 25 states have internal predecessors, (160), 13 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) Word has length 92 [2024-11-09 07:10:59,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:10:59,917 INFO L225 Difference]: With dead ends: 384 [2024-11-09 07:10:59,917 INFO L226 Difference]: Without dead ends: 383 [2024-11-09 07:10:59,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 229 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1892 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=718, Invalid=4104, Unknown=8, NotChecked=0, Total=4830 [2024-11-09 07:10:59,919 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 614 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:10:59,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 588 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 07:10:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-09 07:10:59,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 215. [2024-11-09 07:10:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 177 states have (on average 1.11864406779661) internal successors, (198), 183 states have internal predecessors, (198), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 07:10:59,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 258 transitions. [2024-11-09 07:10:59,980 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 258 transitions. Word has length 92 [2024-11-09 07:10:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:10:59,980 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 258 transitions. [2024-11-09 07:10:59,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 25 states have internal predecessors, (160), 13 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) [2024-11-09 07:10:59,981 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 258 transitions. [2024-11-09 07:10:59,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 07:10:59,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:10:59,982 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 07:11:00,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 07:11:00,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:11:00,183 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:11:00,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:11:00,183 INFO L85 PathProgramCache]: Analyzing trace with hash 831087290, now seen corresponding path program 1 times [2024-11-09 07:11:00,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:11:00,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258760430] [2024-11-09 07:11:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:11:00,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:11:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:11:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-11-09 07:11:00,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:11:00,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258760430] [2024-11-09 07:11:00,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258760430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:11:00,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744384198] [2024-11-09 07:11:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:11:00,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:11:00,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:11:00,526 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:11:00,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 07:11:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:11:00,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:11:00,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:11:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 25 proven. 18 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:11:00,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:11:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:11:05,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744384198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:11:05,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [365463983] [2024-11-09 07:11:05,082 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:11:05,083 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:11:05,083 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:11:05,083 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:11:05,083 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:11:07,475 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:11:07,479 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:11:34,286 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13175#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 20) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-09 07:11:34,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:11:34,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:11:34,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 20 [2024-11-09 07:11:34,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338762588] [2024-11-09 07:11:34,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:11:34,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 07:11:34,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:11:34,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 07:11:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1681, Unknown=7, NotChecked=0, Total=2070 [2024-11-09 07:11:34,289 INFO L87 Difference]: Start difference. First operand 215 states and 258 transitions. Second operand has 21 states, 20 states have (on average 7.85) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 07:11:34,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:11:34,906 INFO L93 Difference]: Finished difference Result 304 states and 369 transitions. [2024-11-09 07:11:34,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:11:34,907 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 7.85) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) Word has length 93 [2024-11-09 07:11:34,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:11:34,908 INFO L225 Difference]: With dead ends: 304 [2024-11-09 07:11:34,908 INFO L226 Difference]: Without dead ends: 303 [2024-11-09 07:11:34,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 236 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=455, Invalid=1988, Unknown=7, NotChecked=0, Total=2450 [2024-11-09 07:11:34,910 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 244 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:11:34,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 253 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:11:34,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-09 07:11:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 214. [2024-11-09 07:11:34,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 177 states have (on average 1.1073446327683616) internal successors, (196), 182 states have internal predecessors, (196), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-09 07:11:34,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2024-11-09 07:11:34,985 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 93 [2024-11-09 07:11:34,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:11:34,986 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2024-11-09 07:11:34,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 7.85) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 07:11:34,988 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2024-11-09 07:11:34,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 07:11:34,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:11:34,989 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-09 07:11:35,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 07:11:35,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:11:35,190 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:11:35,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:11:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash -6097671, now seen corresponding path program 1 times [2024-11-09 07:11:35,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:11:35,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679843180] [2024-11-09 07:11:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:11:35,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:11:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:11:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:11:35,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:11:35,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679843180] [2024-11-09 07:11:35,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679843180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:11:35,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565297037] [2024-11-09 07:11:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:11:35,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:11:35,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:11:35,676 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:11:35,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 07:11:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:11:35,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:11:35,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:11:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:11:36,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:11:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:11:38,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565297037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:11:38,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [682300620] [2024-11-09 07:11:38,437 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:11:38,437 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:11:38,437 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:11:38,437 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:11:38,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:11:43,595 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:11:43,596 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:12:26,297 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14417#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-09 07:12:26,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:12:26,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:12:26,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2024-11-09 07:12:26,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175387891] [2024-11-09 07:12:26,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:12:26,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 07:12:26,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 07:12:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=1850, Unknown=10, NotChecked=0, Total=2256 [2024-11-09 07:12:26,300 INFO L87 Difference]: Start difference. First operand 214 states and 256 transitions. Second operand has 23 states, 22 states have (on average 7.545454545454546) internal successors, (166), 23 states have internal predecessors, (166), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-11-09 07:12:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:28,601 INFO L93 Difference]: Finished difference Result 622 states and 750 transitions. [2024-11-09 07:12:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 07:12:28,602 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.545454545454546) internal successors, (166), 23 states have internal predecessors, (166), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) Word has length 94 [2024-11-09 07:12:28,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:28,610 INFO L225 Difference]: With dead ends: 622 [2024-11-09 07:12:28,610 INFO L226 Difference]: Without dead ends: 558 [2024-11-09 07:12:28,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 240 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1797 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=723, Invalid=3049, Unknown=10, NotChecked=0, Total=3782 [2024-11-09 07:12:28,615 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 390 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:28,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 483 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 07:12:28,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-09 07:12:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 429. [2024-11-09 07:12:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 363 states have (on average 1.1101928374655647) internal successors, (403), 368 states have internal predecessors, (403), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-09 07:12:28,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 521 transitions. [2024-11-09 07:12:28,749 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 521 transitions. Word has length 94 [2024-11-09 07:12:28,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:28,749 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 521 transitions. [2024-11-09 07:12:28,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.545454545454546) internal successors, (166), 23 states have internal predecessors, (166), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-11-09 07:12:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 521 transitions. [2024-11-09 07:12:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 07:12:28,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:28,752 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-09 07:12:28,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 07:12:28,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 07:12:28,953 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:28,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:28,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2124516296, now seen corresponding path program 3 times [2024-11-09 07:12:28,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:28,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396197979] [2024-11-09 07:12:28,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:28,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:29,535 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-09 07:12:29,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:29,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396197979] [2024-11-09 07:12:29,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396197979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:12:29,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321385326] [2024-11-09 07:12:29,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:12:29,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:29,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:29,539 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:29,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 07:12:29,667 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:12:29,668 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:12:29,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 07:12:29,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-09 07:12:31,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:12:34,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321385326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:12:34,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1104318432] [2024-11-09 07:12:34,659 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:12:34,660 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:12:34,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:12:34,660 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:12:34,660 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:12:36,876 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:12:36,877 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:12:41,127 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16107#(exists ((|v_ULTIMATE.start_main_~r~0#1_87| Int) (|v_ULTIMATE.start_main_~q~0#1_96| Int) (|v_ULTIMATE.start_main_~B~0#1_47| Int)) (and (<= 1 |#StackHeapBarrier|) (= |v_ULTIMATE.start_main_~B~0#1_47| 1) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |v_ULTIMATE.start_main_~r~0#1_87|)) (<= |ULTIMATE.start_main_~A~0#1| 20) (<= |v_ULTIMATE.start_main_~q~0#1_96| 2147483647) (<= |v_ULTIMATE.start_main_~r~0#1_87| 2147483647) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_96| |v_ULTIMATE.start_main_~r~0#1_87|)) (<= 0 |ULTIMATE.start_main_~A~0#1|)))' at error location [2024-11-09 07:12:41,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:12:41,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:12:41,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 23 [2024-11-09 07:12:41,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592980855] [2024-11-09 07:12:41,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:12:41,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 07:12:41,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:41,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 07:12:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2429, Unknown=1, NotChecked=0, Total=2652 [2024-11-09 07:12:41,130 INFO L87 Difference]: Start difference. First operand 429 states and 521 transitions. Second operand has 24 states, 22 states have (on average 5.545454545454546) internal successors, (122), 24 states have internal predecessors, (122), 11 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-09 07:12:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:43,870 INFO L93 Difference]: Finished difference Result 648 states and 797 transitions. [2024-11-09 07:12:43,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 07:12:43,871 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.545454545454546) internal successors, (122), 24 states have internal predecessors, (122), 11 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) Word has length 99 [2024-11-09 07:12:43,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:43,874 INFO L225 Difference]: With dead ends: 648 [2024-11-09 07:12:43,874 INFO L226 Difference]: Without dead ends: 644 [2024-11-09 07:12:43,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 166 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=423, Invalid=4688, Unknown=1, NotChecked=0, Total=5112 [2024-11-09 07:12:43,877 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 275 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:43,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 397 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 07:12:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-11-09 07:12:44,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 552. [2024-11-09 07:12:44,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 472 states have (on average 1.1165254237288136) internal successors, (527), 477 states have internal predecessors, (527), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-09 07:12:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 673 transitions. [2024-11-09 07:12:44,050 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 673 transitions. Word has length 99 [2024-11-09 07:12:44,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:44,051 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 673 transitions. [2024-11-09 07:12:44,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.545454545454546) internal successors, (122), 24 states have internal predecessors, (122), 11 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-09 07:12:44,051 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 673 transitions. [2024-11-09 07:12:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 07:12:44,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:44,058 INFO L215 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:44,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 07:12:44,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 07:12:44,258 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:44,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:44,259 INFO L85 PathProgramCache]: Analyzing trace with hash -16241027, now seen corresponding path program 1 times [2024-11-09 07:12:44,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:44,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76231887] [2024-11-09 07:12:44,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:44,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 34 proven. 16 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-09 07:12:44,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:44,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76231887] [2024-11-09 07:12:44,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76231887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:12:44,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340796910] [2024-11-09 07:12:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:44,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:44,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:44,531 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:44,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 07:12:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:44,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 07:12:44,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 07:12:44,918 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:12:44,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340796910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:12:44,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:12:44,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-11-09 07:12:44,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226124802] [2024-11-09 07:12:44,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:12:44,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:12:44,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:44,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:12:44,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:12:44,920 INFO L87 Difference]: Start difference. First operand 552 states and 673 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-09 07:12:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:45,259 INFO L93 Difference]: Finished difference Result 650 states and 787 transitions. [2024-11-09 07:12:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:12:45,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 105 [2024-11-09 07:12:45,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:45,262 INFO L225 Difference]: With dead ends: 650 [2024-11-09 07:12:45,263 INFO L226 Difference]: Without dead ends: 463 [2024-11-09 07:12:45,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-09 07:12:45,264 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 63 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:45,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 168 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:12:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-09 07:12:45,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 407. [2024-11-09 07:12:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 343 states have (on average 1.119533527696793) internal successors, (384), 348 states have internal predecessors, (384), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-09 07:12:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 498 transitions. [2024-11-09 07:12:45,417 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 498 transitions. Word has length 105 [2024-11-09 07:12:45,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:45,417 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 498 transitions. [2024-11-09 07:12:45,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-09 07:12:45,418 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 498 transitions. [2024-11-09 07:12:45,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 07:12:45,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:45,420 INFO L215 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:12:45,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 07:12:45,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 07:12:45,620 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:45,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:45,621 INFO L85 PathProgramCache]: Analyzing trace with hash 922802609, now seen corresponding path program 2 times [2024-11-09 07:12:45,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:45,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758328758] [2024-11-09 07:12:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:45,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:12:45,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363882461] [2024-11-09 07:12:45,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:12:45,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:45,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:45,656 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:45,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 07:12:45,725 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:12:45,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:12:45,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 07:12:45,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 45 proven. 26 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-09 07:12:46,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:12:46,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:12:46,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758328758] [2024-11-09 07:12:46,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:12:46,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363882461] [2024-11-09 07:12:46,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363882461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:12:46,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1131800315] [2024-11-09 07:12:46,403 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-09 07:12:46,403 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:12:46,404 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:12:46,404 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:12:46,405 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:12:52,810 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:12:52,811 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:12:57,033 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19549#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)) (exists ((|v_ULTIMATE.start_main_~d~0#1_198| Int) (|v_ULTIMATE.start_main_~q~0#1_103| Int)) (and (<= (+ 2147483649 (* |v_ULTIMATE.start_main_~q~0#1_103| |v_ULTIMATE.start_main_~d~0#1_198|)) 0) (<= 0 (+ |v_ULTIMATE.start_main_~q~0#1_103| 2147483648)) (<= |v_ULTIMATE.start_main_~q~0#1_103| 2147483647))))' at error location [2024-11-09 07:12:57,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:12:57,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:12:57,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-09 07:12:57,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899885702] [2024-11-09 07:12:57,034 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:12:57,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:12:57,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:12:57,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:12:57,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1155, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 07:12:57,035 INFO L87 Difference]: Start difference. First operand 407 states and 498 transitions. Second operand has 10 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-09 07:12:57,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:12:57,769 INFO L93 Difference]: Finished difference Result 423 states and 519 transitions. [2024-11-09 07:12:57,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:12:57,769 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 105 [2024-11-09 07:12:57,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:12:57,772 INFO L225 Difference]: With dead ends: 423 [2024-11-09 07:12:57,772 INFO L226 Difference]: Without dead ends: 422 [2024-11-09 07:12:57,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 176 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=410, Invalid=1752, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 07:12:57,773 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 82 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:12:57,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 154 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:12:57,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-09 07:12:57,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 414. [2024-11-09 07:12:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 348 states have (on average 1.1206896551724137) internal successors, (390), 353 states have internal predecessors, (390), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-09 07:12:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 508 transitions. [2024-11-09 07:12:57,922 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 508 transitions. Word has length 105 [2024-11-09 07:12:57,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:12:57,923 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 508 transitions. [2024-11-09 07:12:57,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-09 07:12:57,923 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 508 transitions. [2024-11-09 07:12:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 07:12:57,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:12:57,925 INFO L215 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 07:12:57,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 07:12:58,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 07:12:58,126 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:12:58,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:12:58,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1457890068, now seen corresponding path program 1 times [2024-11-09 07:12:58,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:12:58,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928815165] [2024-11-09 07:12:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:58,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:12:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:12:58,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944645321] [2024-11-09 07:12:58,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:12:58,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:12:58,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:12:58,188 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:12:58,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 07:12:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:12:58,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 07:12:58,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:12:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-09 07:12:59,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:13:01,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928815165] [2024-11-09 07:13:01,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:13:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944645321] [2024-11-09 07:13:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944645321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:13:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [455136469] [2024-11-09 07:13:01,704 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-09 07:13:01,704 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:13:01,705 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:13:01,705 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:13:01,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:13:04,607 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-09 07:13:04,704 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-09 07:13:08,419 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:13:08,420 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:13:13,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [455136469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:13:13,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:13:13,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [14] total 40 [2024-11-09 07:13:13,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565775357] [2024-11-09 07:13:13,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:13:13,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 07:13:13,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:13:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 07:13:13,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1688, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 07:13:13,475 INFO L87 Difference]: Start difference. First operand 414 states and 508 transitions. Second operand has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:13:16,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:13:16,446 INFO L93 Difference]: Finished difference Result 415 states and 509 transitions. [2024-11-09 07:13:16,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 07:13:16,447 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 106 [2024-11-09 07:13:16,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:13:16,449 INFO L225 Difference]: With dead ends: 415 [2024-11-09 07:13:16,449 INFO L226 Difference]: Without dead ends: 404 [2024-11-09 07:13:16,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=726, Invalid=2696, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 07:13:16,450 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 192 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:13:16,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 104 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 07:13:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-09 07:13:16,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 383. [2024-11-09 07:13:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 326 states have (on average 1.0797546012269938) internal successors, (352), 328 states have internal predecessors, (352), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-09 07:13:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 458 transitions. [2024-11-09 07:13:16,566 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 458 transitions. Word has length 106 [2024-11-09 07:13:16,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:13:16,567 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 458 transitions. [2024-11-09 07:13:16,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 07:13:16,567 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 458 transitions. [2024-11-09 07:13:16,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 07:13:16,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:13:16,569 INFO L215 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-09 07:13:16,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 07:13:16,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 07:13:16,771 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:13:16,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:13:16,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1296303017, now seen corresponding path program 4 times [2024-11-09 07:13:16,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:13:16,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147344319] [2024-11-09 07:13:16,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:13:16,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:13:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:13:16,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885422030] [2024-11-09 07:13:16,819 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:13:16,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:13:16,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:13:16,821 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:13:16,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 07:13:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:13:16,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 07:13:16,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:13:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-09 07:13:18,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:13:21,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:13:21,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147344319] [2024-11-09 07:13:21,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:13:21,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885422030] [2024-11-09 07:13:21,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885422030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:13:21,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [251621042] [2024-11-09 07:13:21,372 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:13:21,372 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:13:21,372 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:13:21,372 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:13:21,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:13:27,301 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:13:27,302 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:14:08,721 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22025#true' at error location [2024-11-09 07:14:08,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:14:08,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:14:08,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-09 07:14:08,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991576819] [2024-11-09 07:14:08,721 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:14:08,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 07:14:08,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:08,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 07:14:08,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1934, Unknown=19, NotChecked=0, Total=2256 [2024-11-09 07:14:08,724 INFO L87 Difference]: Start difference. First operand 383 states and 458 transitions. Second operand has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 07:14:10,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:10,440 INFO L93 Difference]: Finished difference Result 468 states and 557 transitions. [2024-11-09 07:14:10,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 07:14:10,441 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 116 [2024-11-09 07:14:10,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:10,443 INFO L225 Difference]: With dead ends: 468 [2024-11-09 07:14:10,443 INFO L226 Difference]: Without dead ends: 467 [2024-11-09 07:14:10,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=325, Invalid=2106, Unknown=19, NotChecked=0, Total=2450 [2024-11-09 07:14:10,446 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 52 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:10,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 440 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 07:14:10,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-09 07:14:10,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 417. [2024-11-09 07:14:10,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 356 states have (on average 1.0758426966292134) internal successors, (383), 358 states have internal predecessors, (383), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-09 07:14:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 497 transitions. [2024-11-09 07:14:10,591 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 497 transitions. Word has length 116 [2024-11-09 07:14:10,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:10,591 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 497 transitions. [2024-11-09 07:14:10,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 07:14:10,592 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 497 transitions. [2024-11-09 07:14:10,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-09 07:14:10,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:10,596 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:14:10,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 07:14:10,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:14:10,800 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:14:10,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1660981074, now seen corresponding path program 1 times [2024-11-09 07:14:10,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:10,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800861354] [2024-11-09 07:14:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:10,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:11,263 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:14:11,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:11,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800861354] [2024-11-09 07:14:11,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800861354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:14:11,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127361505] [2024-11-09 07:14:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:11,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:14:11,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:14:11,266 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:14:11,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 07:14:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:11,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 07:14:11,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:14:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 69 proven. 32 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:14:12,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:14:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 17 proven. 84 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:14:13,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127361505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:14:13,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [107782181] [2024-11-09 07:14:13,975 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:14:13,975 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:14:13,976 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:14:13,976 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:14:13,976 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:14:18,956 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:14:18,958 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:14:24,309 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23536#true' at error location [2024-11-09 07:14:24,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:14:24,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:14:24,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 27 [2024-11-09 07:14:24,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815283920] [2024-11-09 07:14:24,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:14:24,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 07:14:24,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:24,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 07:14:24,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=2358, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 07:14:24,313 INFO L87 Difference]: Start difference. First operand 417 states and 497 transitions. Second operand has 28 states, 27 states have (on average 8.25925925925926) internal successors, (223), 28 states have internal predecessors, (223), 19 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 19 states have call predecessors, (54), 19 states have call successors, (54) [2024-11-09 07:14:27,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:27,867 INFO L93 Difference]: Finished difference Result 814 states and 975 transitions. [2024-11-09 07:14:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-09 07:14:27,868 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 8.25925925925926) internal successors, (223), 28 states have internal predecessors, (223), 19 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 19 states have call predecessors, (54), 19 states have call successors, (54) Word has length 128 [2024-11-09 07:14:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:27,870 INFO L225 Difference]: With dead ends: 814 [2024-11-09 07:14:27,870 INFO L226 Difference]: Without dead ends: 813 [2024-11-09 07:14:27,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 336 SyntacticMatches, 7 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3084 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1383, Invalid=6989, Unknown=0, NotChecked=0, Total=8372 [2024-11-09 07:14:27,872 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 1086 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:27,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 1278 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 07:14:27,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-09 07:14:27,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 361. [2024-11-09 07:14:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 307 states have (on average 1.0684039087947883) internal successors, (328), 308 states have internal predecessors, (328), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-09 07:14:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 430 transitions. [2024-11-09 07:14:27,989 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 430 transitions. Word has length 128 [2024-11-09 07:14:27,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:27,990 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 430 transitions. [2024-11-09 07:14:27,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 8.25925925925926) internal successors, (223), 28 states have internal predecessors, (223), 19 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 19 states have call predecessors, (54), 19 states have call successors, (54) [2024-11-09 07:14:27,990 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 430 transitions. [2024-11-09 07:14:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-09 07:14:27,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:27,992 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 07:14:28,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-09 07:14:28,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:14:28,193 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:14:28,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:28,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1525025616, now seen corresponding path program 1 times [2024-11-09 07:14:28,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:28,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978819909] [2024-11-09 07:14:28,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:28,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:14:28,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:14:28,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978819909] [2024-11-09 07:14:28,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978819909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:14:28,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558904722] [2024-11-09 07:14:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:28,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:14:28,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:14:28,941 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:14:28,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 07:14:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:14:29,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:14:29,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:14:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:14:30,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:14:36,375 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:14:36,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558904722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:14:36,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1715667995] [2024-11-09 07:14:36,377 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:14:36,377 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:14:36,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:14:36,378 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:14:36,378 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:14:38,310 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-09 07:14:38,384 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-09 07:14:41,407 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:14:41,408 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:14:46,117 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26639#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-09 07:14:46,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:14:46,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:14:46,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 8] total 30 [2024-11-09 07:14:46,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638629501] [2024-11-09 07:14:46,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:14:46,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 07:14:46,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:14:46,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 07:14:46,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=2550, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 07:14:46,120 INFO L87 Difference]: Start difference. First operand 361 states and 430 transitions. Second operand has 31 states, 30 states have (on average 7.633333333333334) internal successors, (229), 31 states have internal predecessors, (229), 18 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 18 states have call predecessors, (54), 18 states have call successors, (54) [2024-11-09 07:14:52,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:14:52,670 INFO L93 Difference]: Finished difference Result 840 states and 997 transitions. [2024-11-09 07:14:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 07:14:52,671 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 7.633333333333334) internal successors, (229), 31 states have internal predecessors, (229), 18 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 18 states have call predecessors, (54), 18 states have call successors, (54) Word has length 130 [2024-11-09 07:14:52,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:14:52,675 INFO L225 Difference]: With dead ends: 840 [2024-11-09 07:14:52,675 INFO L226 Difference]: Without dead ends: 839 [2024-11-09 07:14:52,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 341 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3024 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=1358, Invalid=5122, Unknown=0, NotChecked=0, Total=6480 [2024-11-09 07:14:52,678 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 645 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:14:52,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 766 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 07:14:52,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2024-11-09 07:14:52,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 593. [2024-11-09 07:14:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 509 states have (on average 1.068762278978389) internal successors, (544), 510 states have internal predecessors, (544), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-09 07:14:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 706 transitions. [2024-11-09 07:14:52,961 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 706 transitions. Word has length 130 [2024-11-09 07:14:52,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:14:52,961 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 706 transitions. [2024-11-09 07:14:52,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 7.633333333333334) internal successors, (229), 31 states have internal predecessors, (229), 18 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 18 states have call predecessors, (54), 18 states have call successors, (54) [2024-11-09 07:14:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 706 transitions. [2024-11-09 07:14:52,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-09 07:14:52,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:14:52,964 INFO L215 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-09 07:14:52,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-09 07:14:53,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-09 07:14:53,168 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:14:53,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:14:53,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1773347928, now seen corresponding path program 5 times [2024-11-09 07:14:53,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:14:53,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061162543] [2024-11-09 07:14:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:14:53,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:14:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 07:14:53,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827157269] [2024-11-09 07:14:53,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:14:53,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:14:53,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:14:53,203 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:14:53,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 07:14:53,281 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:14:53,282 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:14:53,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 07:14:53,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:14:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2024-11-09 07:14:55,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:15:01,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:01,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061162543] [2024-11-09 07:15:01,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 07:15:01,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827157269] [2024-11-09 07:15:01,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827157269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:01,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [296301409] [2024-11-09 07:15:01,203 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:15:01,203 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:15:01,203 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:15:01,203 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:15:01,204 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:15:05,471 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:15:05,473 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:15:49,172 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28436#true' at error location [2024-11-09 07:15:49,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:15:49,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:15:49,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-09 07:15:49,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000016543] [2024-11-09 07:15:49,172 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 07:15:49,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 07:15:49,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:15:49,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 07:15:49,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1473, Unknown=21, NotChecked=0, Total=1806 [2024-11-09 07:15:49,174 INFO L87 Difference]: Start difference. First operand 593 states and 706 transitions. Second operand has 12 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:15:50,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:15:50,183 INFO L93 Difference]: Finished difference Result 810 states and 964 transitions. [2024-11-09 07:15:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:15:50,183 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 133 [2024-11-09 07:15:50,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:15:50,186 INFO L225 Difference]: With dead ends: 810 [2024-11-09 07:15:50,186 INFO L226 Difference]: Without dead ends: 809 [2024-11-09 07:15:50,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 47.7s TimeCoverageRelationStatistics Valid=312, Invalid=1473, Unknown=21, NotChecked=0, Total=1806 [2024-11-09 07:15:50,187 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:15:50,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 141 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:15:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2024-11-09 07:15:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 636. [2024-11-09 07:15:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 546 states have (on average 1.0714285714285714) internal successors, (585), 547 states have internal predecessors, (585), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-09 07:15:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 759 transitions. [2024-11-09 07:15:50,546 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 759 transitions. Word has length 133 [2024-11-09 07:15:50,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:15:50,547 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 759 transitions. [2024-11-09 07:15:50,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:15:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 759 transitions. [2024-11-09 07:15:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-09 07:15:50,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:15:50,549 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-09 07:15:50,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 07:15:50,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-09 07:15:50,754 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:15:50,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:15:50,754 INFO L85 PathProgramCache]: Analyzing trace with hash -686900159, now seen corresponding path program 1 times [2024-11-09 07:15:50,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:15:50,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841802506] [2024-11-09 07:15:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:50,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:15:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:15:51,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:15:51,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841802506] [2024-11-09 07:15:51,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841802506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:51,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347547193] [2024-11-09 07:15:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:15:51,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:15:51,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:15:51,380 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:15:51,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 07:15:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:15:51,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 07:15:51,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:15:52,499 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:15:52,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:15:53,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347547193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:15:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [525228815] [2024-11-09 07:15:53,150 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:15:53,150 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:15:53,150 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:15:53,150 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:15:53,151 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:15:57,554 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:15:57,555 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:16:04,646 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30665#true' at error location [2024-11-09 07:16:04,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:16:04,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:16:04,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2024-11-09 07:16:04,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723539181] [2024-11-09 07:16:04,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:16:04,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 07:16:04,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:16:04,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 07:16:04,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=2428, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 07:16:04,649 INFO L87 Difference]: Start difference. First operand 636 states and 759 transitions. Second operand has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 07:16:08,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:08,031 INFO L93 Difference]: Finished difference Result 1177 states and 1396 transitions. [2024-11-09 07:16:08,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 07:16:08,031 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) Word has length 135 [2024-11-09 07:16:08,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:08,035 INFO L225 Difference]: With dead ends: 1177 [2024-11-09 07:16:08,036 INFO L226 Difference]: Without dead ends: 1176 [2024-11-09 07:16:08,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 241 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2326 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=705, Invalid=5457, Unknown=0, NotChecked=0, Total=6162 [2024-11-09 07:16:08,038 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 422 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:08,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 826 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 07:16:08,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-09 07:16:08,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 581. [2024-11-09 07:16:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 499 states have (on average 1.0721442885771544) internal successors, (535), 500 states have internal predecessors, (535), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-09 07:16:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 693 transitions. [2024-11-09 07:16:08,396 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 693 transitions. Word has length 135 [2024-11-09 07:16:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:08,396 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 693 transitions. [2024-11-09 07:16:08,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-09 07:16:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 693 transitions. [2024-11-09 07:16:08,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-09 07:16:08,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:08,399 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-09 07:16:08,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 07:16:08,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-09 07:16:08,603 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:16:08,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:08,603 INFO L85 PathProgramCache]: Analyzing trace with hash -408499589, now seen corresponding path program 6 times [2024-11-09 07:16:08,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:08,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63456050] [2024-11-09 07:16:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:08,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 07:16:09,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:16:09,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63456050] [2024-11-09 07:16:09,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63456050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:09,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032915041] [2024-11-09 07:16:09,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:16:09,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:09,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:16:09,423 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:16:09,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 07:16:09,533 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:16:09,533 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:16:09,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 07:16:09,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:16:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 31 proven. 127 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-09 07:16:11,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:16:15,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032915041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:15,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1328179452] [2024-11-09 07:16:15,605 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:16:15,605 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:16:15,605 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:16:15,605 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:16:15,606 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:16:17,639 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:16:17,640 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:16:27,592 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33822#(exists ((|v_ULTIMATE.start_main_~r~0#1_143| Int) (|v_ULTIMATE.start_main_~q~0#1_152| Int) (|v_ULTIMATE.start_main_~B~0#1_59| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |v_ULTIMATE.start_main_~r~0#1_143|)) (<= |ULTIMATE.start_main_~A~0#1| 20) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_152| |v_ULTIMATE.start_main_~r~0#1_143|)) (= |v_ULTIMATE.start_main_~B~0#1_59| 1) (<= |v_ULTIMATE.start_main_~r~0#1_143| 2147483647) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= |v_ULTIMATE.start_main_~q~0#1_152| 2147483647)))' at error location [2024-11-09 07:16:27,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:16:27,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:16:27,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 32 [2024-11-09 07:16:27,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930464174] [2024-11-09 07:16:27,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:16:27,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 07:16:27,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:16:27,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 07:16:27,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=3481, Unknown=3, NotChecked=0, Total=3782 [2024-11-09 07:16:27,595 INFO L87 Difference]: Start difference. First operand 581 states and 693 transitions. Second operand has 33 states, 31 states have (on average 5.548387096774194) internal successors, (172), 33 states have internal predecessors, (172), 14 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) [2024-11-09 07:16:31,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:31,557 INFO L93 Difference]: Finished difference Result 888 states and 1051 transitions. [2024-11-09 07:16:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 07:16:31,558 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 5.548387096774194) internal successors, (172), 33 states have internal predecessors, (172), 14 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) Word has length 139 [2024-11-09 07:16:31,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:31,560 INFO L225 Difference]: With dead ends: 888 [2024-11-09 07:16:31,560 INFO L226 Difference]: Without dead ends: 887 [2024-11-09 07:16:31,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 236 SyntacticMatches, 13 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3412 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=641, Invalid=7366, Unknown=3, NotChecked=0, Total=8010 [2024-11-09 07:16:31,562 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 322 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:31,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 693 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 07:16:31,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-09 07:16:31,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 619. [2024-11-09 07:16:31,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 533 states have (on average 1.0712945590994372) internal successors, (571), 534 states have internal predecessors, (571), 83 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2024-11-09 07:16:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 737 transitions. [2024-11-09 07:16:31,821 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 737 transitions. Word has length 139 [2024-11-09 07:16:31,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:31,822 INFO L471 AbstractCegarLoop]: Abstraction has 619 states and 737 transitions. [2024-11-09 07:16:31,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 5.548387096774194) internal successors, (172), 33 states have internal predecessors, (172), 14 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) [2024-11-09 07:16:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 737 transitions. [2024-11-09 07:16:31,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-09 07:16:31,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:31,824 INFO L215 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-09 07:16:31,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-09 07:16:32,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-09 07:16:32,025 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:16:32,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:32,026 INFO L85 PathProgramCache]: Analyzing trace with hash -573229902, now seen corresponding path program 2 times [2024-11-09 07:16:32,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:32,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718711565] [2024-11-09 07:16:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:32,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 3 proven. 144 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-09 07:16:32,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:16:32,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718711565] [2024-11-09 07:16:32,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718711565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:32,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890987353] [2024-11-09 07:16:32,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:16:32,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:32,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:16:32,894 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:16:32,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 07:16:32,960 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:16:32,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:16:32,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 07:16:32,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:16:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-09 07:16:33,827 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:16:33,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890987353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:16:33,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:16:33,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 24 [2024-11-09 07:16:33,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414976755] [2024-11-09 07:16:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:16:33,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:16:33,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:16:33,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:16:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-11-09 07:16:33,829 INFO L87 Difference]: Start difference. First operand 619 states and 737 transitions. Second operand has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:16:34,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:16:34,424 INFO L93 Difference]: Finished difference Result 629 states and 749 transitions. [2024-11-09 07:16:34,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:16:34,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 141 [2024-11-09 07:16:34,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:16:34,427 INFO L225 Difference]: With dead ends: 629 [2024-11-09 07:16:34,427 INFO L226 Difference]: Without dead ends: 628 [2024-11-09 07:16:34,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-11-09 07:16:34,428 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 55 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:16:34,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 28 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:16:34,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-11-09 07:16:34,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 318. [2024-11-09 07:16:34,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 263 states have (on average 1.064638783269962) internal successors, (280), 263 states have internal predecessors, (280), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-09 07:16:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2024-11-09 07:16:34,677 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 141 [2024-11-09 07:16:34,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:16:34,677 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2024-11-09 07:16:34,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 07:16:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2024-11-09 07:16:34,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-09 07:16:34,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:16:34,680 INFO L215 NwaCegarLoop]: trace histogram [21, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1] [2024-11-09 07:16:34,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-09 07:16:34,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-09 07:16:34,881 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-09 07:16:34,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:16:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1536717765, now seen corresponding path program 2 times [2024-11-09 07:16:34,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:16:34,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424283705] [2024-11-09 07:16:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:16:34,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:16:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:16:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 151 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-09 07:16:35,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:16:35,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424283705] [2024-11-09 07:16:35,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424283705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:35,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549209774] [2024-11-09 07:16:35,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:16:35,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:16:35,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:16:35,630 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:16:35,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 07:16:35,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:16:35,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:16:35,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:16:35,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:16:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-09 07:16:36,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:16:42,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549209774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:16:42,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1784453154] [2024-11-09 07:16:42,760 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-09 07:16:42,760 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:16:42,760 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:16:42,761 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:16:42,761 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:16:44,863 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 07:16:44,864 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:17:17,079 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37824#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 20) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-09 07:17:17,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:17:17,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 07:17:17,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 24 [2024-11-09 07:17:17,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62774815] [2024-11-09 07:17:17,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 07:17:17,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 07:17:17,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:17:17,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 07:17:17,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=2438, Unknown=12, NotChecked=0, Total=2970 [2024-11-09 07:17:17,082 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 24 states have internal predecessors, (132), 9 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 10 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-09 07:17:22,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:17:22,246 INFO L93 Difference]: Finished difference Result 545 states and 650 transitions. [2024-11-09 07:17:22,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-09 07:17:22,246 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 24 states have internal predecessors, (132), 9 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 10 states have call predecessors, (28), 9 states have call successors, (28) Word has length 151 [2024-11-09 07:17:22,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:17:22,247 INFO L225 Difference]: With dead ends: 545 [2024-11-09 07:17:22,247 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 07:17:22,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 265 SyntacticMatches, 9 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4596 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=2279, Invalid=10141, Unknown=12, NotChecked=0, Total=12432 [2024-11-09 07:17:22,251 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 770 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:17:22,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 154 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 07:17:22,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 07:17:22,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 07:17:22,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:17:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 07:17:22,253 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2024-11-09 07:17:22,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:17:22,253 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 07:17:22,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 24 states have internal predecessors, (132), 9 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 10 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-09 07:17:22,254 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 07:17:22,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 07:17:22,257 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2024-11-09 07:17:22,258 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2024-11-09 07:17:22,258 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2024-11-09 07:17:22,259 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2024-11-09 07:17:22,259 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2024-11-09 07:17:22,259 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2024-11-09 07:17:22,259 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2024-11-09 07:17:22,259 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2024-11-09 07:17:22,260 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2024-11-09 07:17:22,260 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2024-11-09 07:17:22,260 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2024-11-09 07:17:22,262 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2024-11-09 07:17:22,262 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2024-11-09 07:17:22,262 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2024-11-09 07:17:22,263 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2024-11-09 07:17:22,263 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2024-11-09 07:17:22,263 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2024-11-09 07:17:22,263 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2024-11-09 07:17:22,263 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2024-11-09 07:17:22,263 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2024-11-09 07:17:22,264 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2024-11-09 07:17:22,264 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2024-11-09 07:17:22,264 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2024-11-09 07:17:22,264 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2024-11-09 07:17:22,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 07:17:22,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea141a7-b815-4035-bab3-53e4a353499f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-09 07:17:22,467 INFO L407 BasicCegarLoop]: Path program histogram: [6, 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] [2024-11-09 07:17:22,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.