./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/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_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/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 64bit --witnessprinter.graph.data.programhash d69e4513fb8989bf305d8f9ce21862e8623f2a3d0c8146e8e7fb7e8c658a7eff --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:15:53,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:15:53,701 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-09 05:15:53,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:15:53,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:15:53,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:15:53,743 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:15:53,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:15:53,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:15:53,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:15:53,745 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:15:53,746 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:15:53,746 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:15:53,746 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:15:53,747 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:15:53,747 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:15:53,748 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:15:53,748 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:15:53,748 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:15:53,749 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:15:53,749 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:15:53,750 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:15:53,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:15:53,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:15:53,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:15:53,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:15:53,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:15:53,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:15:53,765 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:15:53,766 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:15:53,766 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 05:15:53,766 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 05:15:53,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:15:53,771 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:15:53,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:15:53,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:15:53,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:15:53,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:15:53,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:15:53,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:15:53,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:15:53,775 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:15:53,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:15:53,776 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:15:53,776 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:15:53,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:15:53,777 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_e67821b0-9c71-4945-875e-f632bef581ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d69e4513fb8989bf305d8f9ce21862e8623f2a3d0c8146e8e7fb7e8c658a7eff [2024-11-09 05:15:54,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:15:54,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:15:54,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:15:54,120 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:15:54,121 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:15:54,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c Unable to find full path for "g++" [2024-11-09 05:15:56,064 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:15:56,297 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:15:56,298 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2024-11-09 05:15:56,304 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/data/cd6dad780/29e01337eb51496e9fde82430fd92be3/FLAG5c0b920d5 [2024-11-09 05:15:56,316 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/data/cd6dad780/29e01337eb51496e9fde82430fd92be3 [2024-11-09 05:15:56,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:15:56,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:15:56,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:15:56,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:15:56,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:15:56,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0e2234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56, skipping insertion in model container [2024-11-09 05:15:56,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,355 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:15:56,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:15:56,553 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:15:56,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:15:56,597 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:15:56,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56 WrapperNode [2024-11-09 05:15:56,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:15:56,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:15:56,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:15:56,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:15:56,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,634 INFO L138 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-11-09 05:15:56,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:15:56,635 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:15:56,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:15:56,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:15:56,644 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:15:56,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:15:56,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:15:56,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:15:56,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56" (1/1) ... [2024-11-09 05:15:56,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:15:56,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:15:56,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:15:56,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:15:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:15:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:15:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:15:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:15:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:15:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:15:56,803 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:15:56,806 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:15:57,044 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-09 05:15:57,045 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:15:57,098 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:15:57,102 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:15:57,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:15:57 BoogieIcfgContainer [2024-11-09 05:15:57,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:15:57,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:15:57,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:15:57,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:15:57,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:15:56" (1/3) ... [2024-11-09 05:15:57,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426a0f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:15:57, skipping insertion in model container [2024-11-09 05:15:57,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:15:56" (2/3) ... [2024-11-09 05:15:57,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426a0f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:15:57, skipping insertion in model container [2024-11-09 05:15:57,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:15:57" (3/3) ... [2024-11-09 05:15:57,113 INFO L112 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Array-1.c [2024-11-09 05:15:57,132 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:15:57,132 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-09 05:15:57,205 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:15:57,212 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;@454c913d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:15:57,213 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 05:15:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:15:57,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 05:15:57,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:15:57,225 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 05:15:57,225 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:15:57,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:15:57,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2627727, now seen corresponding path program 1 times [2024-11-09 05:15:57,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:15:57,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657399181] [2024-11-09 05:15:57,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:15:57,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:15:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:15:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:15:57,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:15:57,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657399181] [2024-11-09 05:15:57,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657399181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:15:57,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:15:57,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:15:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827183554] [2024-11-09 05:15:57,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:15:57,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:15:57,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:15:57,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:15:57,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:15:57,586 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 05:15:57,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:15:57,652 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2024-11-09 05:15:57,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:15:57,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 05:15:57,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:15:57,669 INFO L225 Difference]: With dead ends: 41 [2024-11-09 05:15:57,670 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 05:15:57,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:15:57,676 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:15:57,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:15:57,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 05:15:57,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 05:15:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:15:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-09 05:15:57,711 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 4 [2024-11-09 05:15:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:15:57,712 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-09 05:15:57,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 05:15:57,712 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-09 05:15:57,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 05:15:57,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:15:57,713 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-09 05:15:57,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:15:57,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:15:57,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:15:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash 105921032, now seen corresponding path program 1 times [2024-11-09 05:15:57,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:15:57,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868433350] [2024-11-09 05:15:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:15:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:15:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:15:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:15:57,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:15:57,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868433350] [2024-11-09 05:15:57,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868433350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:15:57,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433819185] [2024-11-09 05:15:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:15:57,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:15:57,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:15:57,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:15:57,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:15:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:15:57,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:15:57,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:15:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:15:58,109 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:15:58,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433819185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:15:58,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:15:58,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 05:15:58,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395526240] [2024-11-09 05:15:58,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:15:58,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:15:58,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:15:58,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:15:58,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:15:58,117 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:15:58,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:15:58,186 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-11-09 05:15:58,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:15:58,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 05:15:58,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:15:58,187 INFO L225 Difference]: With dead ends: 23 [2024-11-09 05:15:58,187 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 05:15:58,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:15:58,189 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:15:58,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:15:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 05:15:58,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 05:15:58,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:15:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-09 05:15:58,201 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 8 [2024-11-09 05:15:58,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:15:58,202 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-09 05:15:58,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:15:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-09 05:15:58,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 05:15:58,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:15:58,204 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-09 05:15:58,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:15:58,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:15:58,409 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:15:58,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:15:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1011415259, now seen corresponding path program 1 times [2024-11-09 05:15:58,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:15:58,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841006272] [2024-11-09 05:15:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:15:58,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:15:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:15:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:15:58,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:15:58,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841006272] [2024-11-09 05:15:58,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841006272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:15:58,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:15:58,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:15:58,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076014414] [2024-11-09 05:15:58,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:15:58,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:15:58,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:15:58,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:15:58,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:15:58,508 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:15:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:15:58,535 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2024-11-09 05:15:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:15:58,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-09 05:15:58,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:15:58,537 INFO L225 Difference]: With dead ends: 34 [2024-11-09 05:15:58,537 INFO L226 Difference]: Without dead ends: 21 [2024-11-09 05:15:58,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:15:58,539 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:15:58,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:15:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-09 05:15:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2024-11-09 05:15:58,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:15:58,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-09 05:15:58,544 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2024-11-09 05:15:58,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:15:58,544 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-09 05:15:58,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:15:58,545 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-09 05:15:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 05:15:58,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:15:58,545 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:15:58,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:15:58,546 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:15:58,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:15:58,547 INFO L85 PathProgramCache]: Analyzing trace with hash -983725592, now seen corresponding path program 1 times [2024-11-09 05:15:58,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:15:58,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773464308] [2024-11-09 05:15:58,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:15:58,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:15:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:15:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:15:58,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:15:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773464308] [2024-11-09 05:15:58,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773464308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:15:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653564550] [2024-11-09 05:15:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:15:58,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:15:58,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:15:58,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:15:58,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:15:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:15:58,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:15:58,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:15:58,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:15:58,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:15:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:15:58,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653564550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:15:58,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [341173734] [2024-11-09 05:15:58,821 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:15:58,821 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:15:58,825 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:15:58,831 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:15:58,831 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:15:59,503 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:15:59,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [341173734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:15:59,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:15:59,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 16 [2024-11-09 05:15:59,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113932625] [2024-11-09 05:15:59,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:15:59,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 05:15:59,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:15:59,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 05:15:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:15:59,723 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:15:59,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:15:59,849 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2024-11-09 05:15:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 05:15:59,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 05:15:59,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:15:59,852 INFO L225 Difference]: With dead ends: 29 [2024-11-09 05:15:59,852 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 05:15:59,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:15:59,854 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:15:59,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:15:59,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 05:15:59,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-09 05:15:59,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:15:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-09 05:15:59,865 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 11 [2024-11-09 05:15:59,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:15:59,866 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-09 05:15:59,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:15:59,866 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-09 05:15:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 05:15:59,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:15:59,867 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:15:59,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:16:00,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:00,068 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:16:00,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:00,069 INFO L85 PathProgramCache]: Analyzing trace with hash -983725400, now seen corresponding path program 1 times [2024-11-09 05:16:00,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:00,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045251270] [2024-11-09 05:16:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:00,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:00,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:00,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045251270] [2024-11-09 05:16:00,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045251270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:16:00,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204332245] [2024-11-09 05:16:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:00,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:00,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:16:00,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:16:00,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:16:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:00,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:16:00,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:16:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:00,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:16:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:00,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204332245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:16:00,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1589701564] [2024-11-09 05:16:00,320 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:16:00,320 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:16:00,321 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:16:00,322 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:16:00,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:16:00,728 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:16:00,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1589701564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:16:00,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:16:00,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 16 [2024-11-09 05:16:00,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956809456] [2024-11-09 05:16:00,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:16:00,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 05:16:00,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:00,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 05:16:00,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:16:00,946 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:01,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:01,043 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-11-09 05:16:01,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 05:16:01,044 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 05:16:01,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:01,045 INFO L225 Difference]: With dead ends: 27 [2024-11-09 05:16:01,045 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 05:16:01,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:16:01,046 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:01,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:16:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 05:16:01,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-09 05:16:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.380952380952381) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:01,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-09 05:16:01,051 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 11 [2024-11-09 05:16:01,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:01,052 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-09 05:16:01,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-09 05:16:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:16:01,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:01,053 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:01,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:16:01,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:01,257 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:16:01,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:01,258 INFO L85 PathProgramCache]: Analyzing trace with hash -430716251, now seen corresponding path program 1 times [2024-11-09 05:16:01,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:01,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633949071] [2024-11-09 05:16:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:01,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:01,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:01,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633949071] [2024-11-09 05:16:01,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633949071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:16:01,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296153432] [2024-11-09 05:16:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:01,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:01,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:16:01,367 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:16:01,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:16:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:01,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:16:01,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:16:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:01,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:16:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:01,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296153432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:16:01,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1984809468] [2024-11-09 05:16:01,471 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:16:01,471 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:16:01,472 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:16:01,472 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:16:01,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:16:01,783 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:16:02,045 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '596#(and (<= 1 |#StackHeapBarrier|) (<= 2147483649 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0))' at error location [2024-11-09 05:16:02,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:16:02,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:16:02,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 05:16:02,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814546107] [2024-11-09 05:16:02,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:16:02,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:16:02,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:02,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:16:02,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:16:02,049 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:02,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:02,093 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2024-11-09 05:16:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:16:02,093 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 05:16:02,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:02,094 INFO L225 Difference]: With dead ends: 52 [2024-11-09 05:16:02,094 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 05:16:02,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:16:02,095 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:02,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 61 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:16:02,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 05:16:02,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-09 05:16:02,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:02,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-09 05:16:02,101 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 12 [2024-11-09 05:16:02,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:02,101 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-09 05:16:02,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:02,101 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-09 05:16:02,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 05:16:02,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:02,102 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:02,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:16:02,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:02,303 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:16:02,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:02,303 INFO L85 PathProgramCache]: Analyzing trace with hash -720365801, now seen corresponding path program 2 times [2024-11-09 05:16:02,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:02,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871993082] [2024-11-09 05:16:02,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:02,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:02,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:02,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871993082] [2024-11-09 05:16:02,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871993082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:16:02,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996409492] [2024-11-09 05:16:02,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:16:02,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:02,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:16:02,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:16:02,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:16:02,561 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 05:16:02,561 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:16:02,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:16:02,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:16:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:02,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:16:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:02,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996409492] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:16:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1951685030] [2024-11-09 05:16:02,723 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:16:02,723 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:16:02,723 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:16:02,723 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:16:02,724 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:16:03,065 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:16:03,377 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '835#(and (<= 1 |#StackHeapBarrier|) (<= 2147483649 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0))' at error location [2024-11-09 05:16:03,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:16:03,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:16:03,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 05:16:03,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653257635] [2024-11-09 05:16:03,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:16:03,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 05:16:03,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:03,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 05:16:03,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2024-11-09 05:16:03,380 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:03,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:03,454 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2024-11-09 05:16:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 05:16:03,457 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 05:16:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:03,458 INFO L225 Difference]: With dead ends: 68 [2024-11-09 05:16:03,458 INFO L226 Difference]: Without dead ends: 49 [2024-11-09 05:16:03,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2024-11-09 05:16:03,459 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 109 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 05:16:03,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 109 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:16:03,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-09 05:16:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-09 05:16:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2024-11-09 05:16:03,470 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 20 [2024-11-09 05:16:03,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:03,471 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2024-11-09 05:16:03,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:03,471 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2024-11-09 05:16:03,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 05:16:03,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:03,472 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:03,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:16:03,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:03,673 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:16:03,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:03,673 INFO L85 PathProgramCache]: Analyzing trace with hash -276628997, now seen corresponding path program 3 times [2024-11-09 05:16:03,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:03,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219828319] [2024-11-09 05:16:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:03,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:04,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:04,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219828319] [2024-11-09 05:16:04,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219828319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:16:04,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297235490] [2024-11-09 05:16:04,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:16:04,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:04,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:16:04,005 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:16:04,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:16:04,073 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:16:04,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:16:04,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 05:16:04,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:16:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:04,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:16:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:04,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297235490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:16:04,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [942160056] [2024-11-09 05:16:04,511 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:16:04,511 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:16:04,511 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:16:04,511 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:16:04,511 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:16:04,766 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:16:05,198 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1226#(and (<= 1 |#StackHeapBarrier|) (<= 2147483649 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0))' at error location [2024-11-09 05:16:05,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:16:05,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:16:05,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-11-09 05:16:05,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549541290] [2024-11-09 05:16:05,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:16:05,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 05:16:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:05,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 05:16:05,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1391, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 05:16:05,203 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:05,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:05,342 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2024-11-09 05:16:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 05:16:05,343 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-09 05:16:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:05,344 INFO L225 Difference]: With dead ends: 100 [2024-11-09 05:16:05,345 INFO L226 Difference]: Without dead ends: 81 [2024-11-09 05:16:05,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 74 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=331, Invalid=1391, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 05:16:05,346 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:05,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:16:05,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-09 05:16:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-09 05:16:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.103896103896104) internal successors, (85), 80 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:05,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2024-11-09 05:16:05,361 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 36 [2024-11-09 05:16:05,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:05,362 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2024-11-09 05:16:05,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:05,363 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2024-11-09 05:16:05,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 05:16:05,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:05,366 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:05,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:16:05,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:05,567 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:16:05,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:05,568 INFO L85 PathProgramCache]: Analyzing trace with hash 231335875, now seen corresponding path program 4 times [2024-11-09 05:16:05,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:05,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259110806] [2024-11-09 05:16:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:05,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:06,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:06,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259110806] [2024-11-09 05:16:06,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259110806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:16:06,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732386239] [2024-11-09 05:16:06,558 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:16:06,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:06,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:16:06,559 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:16:06,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:16:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:06,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 05:16:06,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:16:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:06,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:16:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:07,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732386239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:16:07,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [609767215] [2024-11-09 05:16:07,886 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:16:07,886 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:16:07,887 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:16:07,887 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:16:07,887 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:16:08,102 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:16:09,091 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1921#(and (<= 1 |#StackHeapBarrier|) (<= 2147483649 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0))' at error location [2024-11-09 05:16:09,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:16:09,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:16:09,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 65 [2024-11-09 05:16:09,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666848885] [2024-11-09 05:16:09,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:16:09,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-09 05:16:09,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:09,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-09 05:16:09,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1147, Invalid=4255, Unknown=0, NotChecked=0, Total=5402 [2024-11-09 05:16:09,096 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 65 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:09,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:09,330 INFO L93 Difference]: Finished difference Result 164 states and 187 transitions. [2024-11-09 05:16:09,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-09 05:16:09,331 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 65 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-09 05:16:09,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:09,332 INFO L225 Difference]: With dead ends: 164 [2024-11-09 05:16:09,332 INFO L226 Difference]: Without dead ends: 145 [2024-11-09 05:16:09,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 146 SyntacticMatches, 16 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3575 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1147, Invalid=4255, Unknown=0, NotChecked=0, Total=5402 [2024-11-09 05:16:09,335 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:09,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 137 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:16:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-09 05:16:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-09 05:16:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 141 states have (on average 1.0567375886524824) internal successors, (149), 144 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2024-11-09 05:16:09,347 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 68 [2024-11-09 05:16:09,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:09,347 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2024-11-09 05:16:09,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 65 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:09,348 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2024-11-09 05:16:09,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-09 05:16:09,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:09,351 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:09,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 05:16:09,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:09,552 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:16:09,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1952685229, now seen corresponding path program 5 times [2024-11-09 05:16:09,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:09,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458940510] [2024-11-09 05:16:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:09,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:12,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:12,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458940510] [2024-11-09 05:16:12,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458940510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:16:12,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527503822] [2024-11-09 05:16:12,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:16:12,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:12,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:16:12,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:16:12,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:16:28,676 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2024-11-09 05:16:28,677 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:16:28,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-09 05:16:28,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:16:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:28,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:16:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:32,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527503822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:16:32,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [318530683] [2024-11-09 05:16:32,590 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:16:32,590 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:16:32,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:16:32,590 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:16:32,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:16:32,819 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:16:35,133 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3224#(and (<= 1 |#StackHeapBarrier|) (<= 2147483649 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0))' at error location [2024-11-09 05:16:35,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:16:35,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:16:35,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 129 [2024-11-09 05:16:35,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128572661] [2024-11-09 05:16:35,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:16:35,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2024-11-09 05:16:35,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:16:35,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2024-11-09 05:16:35,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4315, Invalid=14591, Unknown=0, NotChecked=0, Total=18906 [2024-11-09 05:16:35,144 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand has 130 states, 130 states have (on average 2.023076923076923) internal successors, (263), 129 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:35,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:16:35,698 INFO L93 Difference]: Finished difference Result 292 states and 331 transitions. [2024-11-09 05:16:35,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-09 05:16:35,699 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.023076923076923) internal successors, (263), 129 states have internal predecessors, (263), 0 states have call successors, (0), 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 132 [2024-11-09 05:16:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:16:35,700 INFO L225 Difference]: With dead ends: 292 [2024-11-09 05:16:35,700 INFO L226 Difference]: Without dead ends: 273 [2024-11-09 05:16:35,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 290 SyntacticMatches, 32 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12807 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=4315, Invalid=14591, Unknown=0, NotChecked=0, Total=18906 [2024-11-09 05:16:35,705 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:16:35,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 107 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:16:35,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-09 05:16:35,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2024-11-09 05:16:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 269 states have (on average 1.029739776951673) internal successors, (277), 272 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 277 transitions. [2024-11-09 05:16:35,725 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 277 transitions. Word has length 132 [2024-11-09 05:16:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:16:35,726 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 277 transitions. [2024-11-09 05:16:35,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.023076923076923) internal successors, (263), 129 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:16:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 277 transitions. [2024-11-09 05:16:35,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-09 05:16:35,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:16:35,729 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:16:35,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 05:16:35,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:16:35,930 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:16:35,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:16:35,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1783880307, now seen corresponding path program 6 times [2024-11-09 05:16:35,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:16:35,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360699066] [2024-11-09 05:16:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:16:35,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:16:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:16:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:45,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:16:45,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360699066] [2024-11-09 05:16:45,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360699066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:16:45,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833472856] [2024-11-09 05:16:45,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:16:45,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:16:45,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:16:45,672 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:16:45,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:16:45,922 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:16:45,922 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:16:45,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-09 05:16:45,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:16:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:16:46,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:17:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:00,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833472856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:17:00,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1416060229] [2024-11-09 05:17:00,261 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:17:00,261 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:17:00,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:17:00,262 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:17:00,262 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:17:00,429 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:17:07,653 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5743#(and (<= 1 |#StackHeapBarrier|) (<= 2147483649 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0))' at error location [2024-11-09 05:17:07,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:17:07,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:17:07,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 257 [2024-11-09 05:17:07,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919487402] [2024-11-09 05:17:07,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:17:07,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 258 states [2024-11-09 05:17:07,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:17:07,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2024-11-09 05:17:07,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16795, Invalid=53695, Unknown=0, NotChecked=0, Total=70490 [2024-11-09 05:17:07,668 INFO L87 Difference]: Start difference. First operand 273 states and 277 transitions. Second operand has 258 states, 258 states have (on average 2.011627906976744) internal successors, (519), 257 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:17:09,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:17:09,061 INFO L93 Difference]: Finished difference Result 548 states and 619 transitions. [2024-11-09 05:17:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2024-11-09 05:17:09,062 INFO L78 Accepts]: Start accepts. Automaton has has 258 states, 258 states have (on average 2.011627906976744) internal successors, (519), 257 states have internal predecessors, (519), 0 states have call successors, (0), 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 260 [2024-11-09 05:17:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:17:09,065 INFO L225 Difference]: With dead ends: 548 [2024-11-09 05:17:09,065 INFO L226 Difference]: Without dead ends: 529 [2024-11-09 05:17:09,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 578 SyntacticMatches, 64 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48167 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=16795, Invalid=53695, Unknown=0, NotChecked=0, Total=70490 [2024-11-09 05:17:09,070 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:17:09,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 135 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:17:09,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-09 05:17:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-11-09 05:17:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 525 states have (on average 1.0152380952380953) internal successors, (533), 528 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:17:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 533 transitions. [2024-11-09 05:17:09,102 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 533 transitions. Word has length 260 [2024-11-09 05:17:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:17:09,103 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 533 transitions. [2024-11-09 05:17:09,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 258 states, 258 states have (on average 2.011627906976744) internal successors, (519), 257 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:17:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 533 transitions. [2024-11-09 05:17:09,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2024-11-09 05:17:09,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:17:09,115 INFO L215 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:17:09,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 05:17:09,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 05:17:09,316 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:17:09,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:17:09,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1542666061, now seen corresponding path program 7 times [2024-11-09 05:17:09,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:17:09,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965024170] [2024-11-09 05:17:09,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:17:09,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:17:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:44,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:17:44,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965024170] [2024-11-09 05:17:44,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965024170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:17:44,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395909729] [2024-11-09 05:17:44,607 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:17:44,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:17:44,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:17:44,608 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:17:44,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:17:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:45,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 256 conjuncts are in the unsatisfiable core [2024-11-09 05:17:45,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:17:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:45,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:18:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:18:40,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395909729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:18:40,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1216805600] [2024-11-09 05:18:40,863 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:18:40,863 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:18:40,864 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:18:40,864 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:18:40,864 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:18:41,042 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:19:07,598 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10694#(and (<= 1 |#StackHeapBarrier|) (<= 2147483649 (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0)) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0))' at error location [2024-11-09 05:19:07,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:19:07,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:19:07,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [256, 256, 256] total 513 [2024-11-09 05:19:07,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047741292] [2024-11-09 05:19:07,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:19:07,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 514 states [2024-11-09 05:19:07,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:19:07,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 514 interpolants. [2024-11-09 05:19:07,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66331, Invalid=205631, Unknown=0, NotChecked=0, Total=271962 [2024-11-09 05:19:07,631 INFO L87 Difference]: Start difference. First operand 529 states and 533 transitions. Second operand has 514 states, 514 states have (on average 2.0058365758754864) internal successors, (1031), 513 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:19:13,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:19:13,369 INFO L93 Difference]: Finished difference Result 1060 states and 1195 transitions. [2024-11-09 05:19:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2024-11-09 05:19:13,370 INFO L78 Accepts]: Start accepts. Automaton has has 514 states, 514 states have (on average 2.0058365758754864) internal successors, (1031), 513 states have internal predecessors, (1031), 0 states have call successors, (0), 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 516 [2024-11-09 05:19:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:19:13,374 INFO L225 Difference]: With dead ends: 1060 [2024-11-09 05:19:13,375 INFO L226 Difference]: Without dead ends: 1041 [2024-11-09 05:19:13,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1802 GetRequests, 1154 SyntacticMatches, 128 SemanticMatches, 520 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186471 ImplicationChecksByTransitivity, 101.0s TimeCoverageRelationStatistics Valid=66331, Invalid=205631, Unknown=0, NotChecked=0, Total=271962 [2024-11-09 05:19:13,392 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:19:13,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 205 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 05:19:13,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2024-11-09 05:19:13,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1041. [2024-11-09 05:19:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1037 states have (on average 1.00771456123433) internal successors, (1045), 1040 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:19:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1045 transitions. [2024-11-09 05:19:13,444 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1045 transitions. Word has length 516 [2024-11-09 05:19:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:19:13,445 INFO L471 AbstractCegarLoop]: Abstraction has 1041 states and 1045 transitions. [2024-11-09 05:19:13,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 514 states, 514 states have (on average 2.0058365758754864) internal successors, (1031), 513 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:19:13,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1045 transitions. [2024-11-09 05:19:13,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2024-11-09 05:19:13,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:19:13,539 INFO L215 NwaCegarLoop]: trace histogram [255, 255, 255, 255, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:19:13,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 05:19:13,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:19:13,740 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 05:19:13,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:19:13,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2002344653, now seen corresponding path program 8 times [2024-11-09 05:19:13,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:19:13,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234821151] [2024-11-09 05:19:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:19:13,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:19:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:21:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 129795 backedges. 0 proven. 129795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:21:59,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:21:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234821151] [2024-11-09 05:21:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234821151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:21:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258322740] [2024-11-09 05:21:59,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:21:59,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:21:59,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:21:59,810 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:21:59,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e67821b0-9c71-4945-875e-f632bef581ef/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process