./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash df76811034b688387cfe28dd1eb6de91c21580662ac8ddb8163b41c1d6179172 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:52:36,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:52:36,102 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-14 03:52:36,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:52:36,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:52:36,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:52:36,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:52:36,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:52:36,170 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:52:36,170 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:52:36,170 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:52:36,170 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:52:36,171 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:52:36,171 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:52:36,172 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:52:36,172 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:52:36,172 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:52:36,172 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:52:36,173 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:52:36,173 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:52:36,173 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:52:36,173 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:52:36,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:52:36,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:52:36,176 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:52:36,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:52:36,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:52:36,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:52:36,177 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:52:36,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:52:36,177 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:52:36,177 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:52:36,178 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 03:52:36,178 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:52:36,178 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:52:36,178 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:52:36,178 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:52:36,178 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:52:36,178 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:52:36,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:52:36,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:52:36,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:52:36,179 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:52:36,179 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:52:36,179 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:52:36,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:52:36,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:52:36,179 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:52:36,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:52:36,180 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df76811034b688387cfe28dd1eb6de91c21580662ac8ddb8163b41c1d6179172 [2024-11-14 03:52:36,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:52:36,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:52:36,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:52:36,630 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:52:36,630 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:52:36,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c Unable to find full path for "g++" [2024-11-14 03:52:39,045 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:52:39,358 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:52:39,359 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c [2024-11-14 03:52:39,368 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/data/7780d7a2e/a89123978ac24d5a9703955fdff440c9/FLAG612dae950 [2024-11-14 03:52:39,628 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/data/7780d7a2e/a89123978ac24d5a9703955fdff440c9 [2024-11-14 03:52:39,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:52:39,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:52:39,637 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:52:39,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:52:39,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:52:39,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:39,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b67b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39, skipping insertion in model container [2024-11-14 03:52:39,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:39,670 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:52:39,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:52:39,951 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:52:39,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:52:39,991 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:52:39,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39 WrapperNode [2024-11-14 03:52:39,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:52:39,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:52:39,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:52:39,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:52:40,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:40,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:40,043 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 90 [2024-11-14 03:52:40,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:52:40,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:52:40,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:52:40,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:52:40,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:40,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:40,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:40,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:40,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:40,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:40,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:40,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:40,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:52:40,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:52:40,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:52:40,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:52:40,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39" (1/1) ... [2024-11-14 03:52:40,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:52:40,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:52:40,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:52:40,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:52:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:52:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:52:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 03:52:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:52:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:52:40,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:52:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 03:52:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:52:40,278 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:52:40,281 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:52:40,650 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-14 03:52:40,650 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:52:40,724 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:52:40,724 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-14 03:52:40,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:52:40 BoogieIcfgContainer [2024-11-14 03:52:40,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:52:40,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:52:40,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:52:40,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:52:40,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:52:39" (1/3) ... [2024-11-14 03:52:40,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8ffb7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:52:40, skipping insertion in model container [2024-11-14 03:52:40,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:52:39" (2/3) ... [2024-11-14 03:52:40,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8ffb7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:52:40, skipping insertion in model container [2024-11-14 03:52:40,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:52:40" (3/3) ... [2024-11-14 03:52:40,740 INFO L112 eAbstractionObserver]: Analyzing ICFG init-non-constant-3-u.c [2024-11-14 03:52:40,762 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:52:40,764 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG init-non-constant-3-u.c that has 1 procedures, 48 locations, 1 initial locations, 6 loop locations, and 20 error locations. [2024-11-14 03:52:40,862 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:52:40,883 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;@5b8d7ecd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:52:40,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-14 03:52:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 27 states have (on average 1.962962962962963) internal successors, (53), 47 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) [2024-11-14 03:52:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 03:52:40,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:40,901 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 03:52:40,903 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:52:40,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:40,911 INFO L85 PathProgramCache]: Analyzing trace with hash 4810350, now seen corresponding path program 1 times [2024-11-14 03:52:40,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:40,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836865653] [2024-11-14 03:52:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:40,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:41,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:41,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836865653] [2024-11-14 03:52:41,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836865653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:52:41,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:52:41,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:52:41,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326556070] [2024-11-14 03:52:41,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:52:41,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:52:41,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:52:41,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:52:41,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:52:41,383 INFO L87 Difference]: Start difference. First operand has 48 states, 27 states have (on average 1.962962962962963) internal successors, (53), 47 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) Second operand has 4 states, 4 states have (on average 1.0) 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) [2024-11-14 03:52:41,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:52:41,672 INFO L93 Difference]: Finished difference Result 119 states and 145 transitions. [2024-11-14 03:52:41,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:52:41,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) 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 [2024-11-14 03:52:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:52:41,686 INFO L225 Difference]: With dead ends: 119 [2024-11-14 03:52:41,686 INFO L226 Difference]: Without dead ends: 71 [2024-11-14 03:52:41,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:52:41,694 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 83 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:52:41,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 36 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:52:41,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-14 03:52:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2024-11-14 03:52:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.8297872340425532) internal successors, (86), 66 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2024-11-14 03:52:41,743 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 4 [2024-11-14 03:52:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:52:41,744 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2024-11-14 03:52:41,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) 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) [2024-11-14 03:52:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2024-11-14 03:52:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 03:52:41,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:41,745 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-14 03:52:41,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:52:41,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:52:41,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash 149002922, now seen corresponding path program 1 times [2024-11-14 03:52:41,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:41,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035160205] [2024-11-14 03:52:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:41,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:41,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:41,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035160205] [2024-11-14 03:52:41,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035160205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:52:41,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:52:41,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:52:41,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523271845] [2024-11-14 03:52:41,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:52:41,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:52:41,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:52:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:52:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:52:41,894 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:42,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:52:42,072 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2024-11-14 03:52:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:52:42,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2024-11-14 03:52:42,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:52:42,074 INFO L225 Difference]: With dead ends: 73 [2024-11-14 03:52:42,075 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 03:52:42,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:52:42,076 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 81 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:52:42,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 22 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:52:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 03:52:42,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2024-11-14 03:52:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.7446808510638299) internal successors, (82), 64 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2024-11-14 03:52:42,101 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 5 [2024-11-14 03:52:42,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:52:42,102 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2024-11-14 03:52:42,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:42,102 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2024-11-14 03:52:42,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 03:52:42,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:42,103 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 03:52:42,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:52:42,103 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:52:42,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:42,104 INFO L85 PathProgramCache]: Analyzing trace with hash 324123346, now seen corresponding path program 1 times [2024-11-14 03:52:42,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:42,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203431683] [2024-11-14 03:52:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:42,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:42,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203431683] [2024-11-14 03:52:42,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203431683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:52:42,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:52:42,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:52:42,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307930065] [2024-11-14 03:52:42,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:52:42,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:52:42,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:52:42,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:52:42,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:52:42,254 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:52:42,455 INFO L93 Difference]: Finished difference Result 127 states and 163 transitions. [2024-11-14 03:52:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:52:42,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 03:52:42,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:52:42,458 INFO L225 Difference]: With dead ends: 127 [2024-11-14 03:52:42,459 INFO L226 Difference]: Without dead ends: 123 [2024-11-14 03:52:42,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:52:42,460 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 79 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:52:42,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 43 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:52:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-14 03:52:42,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2024-11-14 03:52:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 93 states have (on average 1.7096774193548387) internal successors, (159), 110 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:42,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2024-11-14 03:52:42,478 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 6 [2024-11-14 03:52:42,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:52:42,478 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2024-11-14 03:52:42,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:42,479 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2024-11-14 03:52:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 03:52:42,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:42,480 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:52:42,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:52:42,480 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:52:42,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:42,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1457889196, now seen corresponding path program 1 times [2024-11-14 03:52:42,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:42,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394964750] [2024-11-14 03:52:42,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:42,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:42,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:42,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394964750] [2024-11-14 03:52:42,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394964750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:52:42,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:52:42,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:52:42,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149270465] [2024-11-14 03:52:42,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:52:42,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:52:42,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:52:42,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:52:42,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:52:42,683 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:42,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:52:42,936 INFO L93 Difference]: Finished difference Result 149 states and 209 transitions. [2024-11-14 03:52:42,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:52:42,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-14 03:52:42,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:52:42,940 INFO L225 Difference]: With dead ends: 149 [2024-11-14 03:52:42,940 INFO L226 Difference]: Without dead ends: 143 [2024-11-14 03:52:42,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:52:42,944 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 98 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:52:42,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 21 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:52:42,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-14 03:52:42,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2024-11-14 03:52:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 121 states have (on average 1.628099173553719) internal successors, (197), 138 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 197 transitions. [2024-11-14 03:52:42,963 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 197 transitions. Word has length 7 [2024-11-14 03:52:42,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:52:42,963 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 197 transitions. [2024-11-14 03:52:42,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 197 transitions. [2024-11-14 03:52:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 03:52:42,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:42,964 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:52:42,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:52:42,965 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:52:42,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:42,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2050075116, now seen corresponding path program 1 times [2024-11-14 03:52:42,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:42,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747878252] [2024-11-14 03:52:42,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:42,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:43,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:43,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747878252] [2024-11-14 03:52:43,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747878252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:52:43,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:52:43,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:52:43,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842698771] [2024-11-14 03:52:43,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:52:43,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:52:43,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:52:43,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:52:43,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:52:43,151 INFO L87 Difference]: Start difference. First operand 139 states and 197 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2024-11-14 03:52:43,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:52:43,462 INFO L93 Difference]: Finished difference Result 153 states and 197 transitions. [2024-11-14 03:52:43,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:52:43,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2024-11-14 03:52:43,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:52:43,464 INFO L225 Difference]: With dead ends: 153 [2024-11-14 03:52:43,465 INFO L226 Difference]: Without dead ends: 151 [2024-11-14 03:52:43,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:52:43,466 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 70 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:52:43,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 42 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:52:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-14 03:52:43,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 139. [2024-11-14 03:52:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 121 states have (on average 1.6115702479338843) internal successors, (195), 138 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 195 transitions. [2024-11-14 03:52:43,486 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 195 transitions. Word has length 8 [2024-11-14 03:52:43,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:52:43,486 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 195 transitions. [2024-11-14 03:52:43,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2024-11-14 03:52:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 195 transitions. [2024-11-14 03:52:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:52:43,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:43,488 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:52:43,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:52:43,488 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:52:43,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:43,489 INFO L85 PathProgramCache]: Analyzing trace with hash -116148051, now seen corresponding path program 1 times [2024-11-14 03:52:43,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:43,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800584101] [2024-11-14 03:52:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:43,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:43,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:43,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800584101] [2024-11-14 03:52:43,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800584101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:52:43,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:52:43,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:52:43,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722853766] [2024-11-14 03:52:43,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:52:43,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:52:43,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:52:43,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:52:43,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:52:43,600 INFO L87 Difference]: Start difference. First operand 139 states and 195 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2024-11-14 03:52:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:52:43,724 INFO L93 Difference]: Finished difference Result 293 states and 422 transitions. [2024-11-14 03:52:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:52:43,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 [2024-11-14 03:52:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:52:43,726 INFO L225 Difference]: With dead ends: 293 [2024-11-14 03:52:43,726 INFO L226 Difference]: Without dead ends: 171 [2024-11-14 03:52:43,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:52:43,728 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 81 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:52:43,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 52 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:52:43,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-14 03:52:43,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-11-14 03:52:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 149 states have (on average 1.5771812080536913) internal successors, (235), 166 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:43,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 235 transitions. [2024-11-14 03:52:43,751 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 235 transitions. Word has length 9 [2024-11-14 03:52:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:52:43,752 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 235 transitions. [2024-11-14 03:52:43,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2024-11-14 03:52:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 235 transitions. [2024-11-14 03:52:43,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 03:52:43,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:43,752 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:52:43,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 03:52:43,753 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:52:43,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:43,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1638589530, now seen corresponding path program 1 times [2024-11-14 03:52:43,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:43,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087818488] [2024-11-14 03:52:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:43,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:43,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:43,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087818488] [2024-11-14 03:52:43,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087818488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:52:43,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304504786] [2024-11-14 03:52:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:43,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:52:43,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:52:43,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:52:43,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:52:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:44,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:52:44,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:52:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:44,254 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:52:44,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304504786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:52:44,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:52:44,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-14 03:52:44,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469087562] [2024-11-14 03:52:44,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:52:44,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:52:44,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:52:44,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:52:44,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:52:44,257 INFO L87 Difference]: Start difference. First operand 167 states and 235 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:52:44,455 INFO L93 Difference]: Finished difference Result 167 states and 235 transitions. [2024-11-14 03:52:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:52:44,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-14 03:52:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:52:44,458 INFO L225 Difference]: With dead ends: 167 [2024-11-14 03:52:44,459 INFO L226 Difference]: Without dead ends: 159 [2024-11-14 03:52:44,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:52:44,462 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:52:44,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:52:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-14 03:52:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-14 03:52:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 149 states have (on average 1.3624161073825503) internal successors, (203), 158 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 203 transitions. [2024-11-14 03:52:44,497 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 203 transitions. Word has length 14 [2024-11-14 03:52:44,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:52:44,497 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 203 transitions. [2024-11-14 03:52:44,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 203 transitions. [2024-11-14 03:52:44,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:52:44,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:44,499 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:52:44,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:52:44,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:52:44,700 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:52:44,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:44,700 INFO L85 PathProgramCache]: Analyzing trace with hash -743332058, now seen corresponding path program 1 times [2024-11-14 03:52:44,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:44,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661434150] [2024-11-14 03:52:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:44,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:44,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:44,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661434150] [2024-11-14 03:52:44,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661434150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:52:44,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462985662] [2024-11-14 03:52:44,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:44,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:52:44,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:52:44,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:52:44,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:52:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:44,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:52:44,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:52:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:45,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:52:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:45,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462985662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:52:45,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2063080901] [2024-11-14 03:52:45,313 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 03:52:45,314 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:52:45,318 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:52:45,324 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:52:45,324 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:52:46,560 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:52:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2063080901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:52:47,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:52:47,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 4] total 16 [2024-11-14 03:52:47,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260155263] [2024-11-14 03:52:47,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:52:47,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:52:47,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:52:47,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:52:47,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=208, Unknown=1, NotChecked=0, Total=306 [2024-11-14 03:52:47,442 INFO L87 Difference]: Start difference. First operand 159 states and 203 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2024-11-14 03:52:48,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:52:48,240 INFO L93 Difference]: Finished difference Result 242 states and 303 transitions. [2024-11-14 03:52:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:52:48,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 15 [2024-11-14 03:52:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:52:48,242 INFO L225 Difference]: With dead ends: 242 [2024-11-14 03:52:48,242 INFO L226 Difference]: Without dead ends: 161 [2024-11-14 03:52:48,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=137, Invalid=282, Unknown=1, NotChecked=0, Total=420 [2024-11-14 03:52:48,243 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:52:48,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 38 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:52:48,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-14 03:52:48,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 153. [2024-11-14 03:52:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 143 states have (on average 1.3566433566433567) internal successors, (194), 152 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 194 transitions. [2024-11-14 03:52:48,279 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 194 transitions. Word has length 15 [2024-11-14 03:52:48,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:52:48,280 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 194 transitions. [2024-11-14 03:52:48,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2024-11-14 03:52:48,280 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 194 transitions. [2024-11-14 03:52:48,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 03:52:48,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:48,284 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:52:48,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:52:48,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 03:52:48,484 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:52:48,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:48,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1950961215, now seen corresponding path program 1 times [2024-11-14 03:52:48,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:48,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486898441] [2024-11-14 03:52:48,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:48,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:48,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:48,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486898441] [2024-11-14 03:52:48,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486898441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:52:48,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627453833] [2024-11-14 03:52:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:48,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:52:48,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:52:48,573 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:52:48,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:52:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:48,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:52:48,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:52:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:48,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:52:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:48,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627453833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:52:48,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1819253204] [2024-11-14 03:52:48,789 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 03:52:48,790 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:52:48,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:52:48,791 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:52:48,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:52:49,409 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:52:50,158 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3048#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= |ULTIMATE.start_main_~k~0#1| 999) (= |ULTIMATE.start_main_~n~0#1| 1000))' at error location [2024-11-14 03:52:50,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:52:50,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:52:50,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-14 03:52:50,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447711456] [2024-11-14 03:52:50,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:52:50,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 03:52:50,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:52:50,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 03:52:50,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:52:50,161 INFO L87 Difference]: Start difference. First operand 153 states and 194 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 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) [2024-11-14 03:52:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:52:50,386 INFO L93 Difference]: Finished difference Result 427 states and 566 transitions. [2024-11-14 03:52:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:52:50,386 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-14 03:52:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:52:50,388 INFO L225 Difference]: With dead ends: 427 [2024-11-14 03:52:50,388 INFO L226 Difference]: Without dead ends: 285 [2024-11-14 03:52:50,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2024-11-14 03:52:50,390 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 179 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:52:50,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 60 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:52:50,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-14 03:52:50,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 279. [2024-11-14 03:52:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 269 states have (on average 1.312267657992565) internal successors, (353), 278 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:50,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 353 transitions. [2024-11-14 03:52:50,419 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 353 transitions. Word has length 17 [2024-11-14 03:52:50,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:52:50,419 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 353 transitions. [2024-11-14 03:52:50,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 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) [2024-11-14 03:52:50,419 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 353 transitions. [2024-11-14 03:52:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 03:52:50,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:50,421 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-11-14 03:52:50,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:52:50,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:52:50,625 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:52:50,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash 591985839, now seen corresponding path program 2 times [2024-11-14 03:52:50,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:50,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424750735] [2024-11-14 03:52:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:50,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-14 03:52:50,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:50,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424750735] [2024-11-14 03:52:50,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424750735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:52:50,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713066534] [2024-11-14 03:52:50,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:52:50,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:52:50,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:52:50,772 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:52:50,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:52:50,842 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-14 03:52:50,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:52:50,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:52:50,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:52:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-14 03:52:51,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:52:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-14 03:52:51,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713066534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:52:51,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2139351626] [2024-11-14 03:52:51,153 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 03:52:51,153 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:52:51,153 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:52:51,154 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:52:51,154 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:52:51,708 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:52:52,113 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4125#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= (+ |ULTIMATE.start_main_~k~0#1| 1) |ULTIMATE.start_main_~n~0#1|))' at error location [2024-11-14 03:52:52,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:52:52,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:52:52,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-14 03:52:52,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387419581] [2024-11-14 03:52:52,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:52:52,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 03:52:52,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:52:52,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 03:52:52,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-14 03:52:52,116 INFO L87 Difference]: Start difference. First operand 279 states and 353 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:52:52,690 INFO L93 Difference]: Finished difference Result 592 states and 759 transitions. [2024-11-14 03:52:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 03:52:52,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 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 38 [2024-11-14 03:52:52,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:52:52,694 INFO L225 Difference]: With dead ends: 592 [2024-11-14 03:52:52,694 INFO L226 Difference]: Without dead ends: 588 [2024-11-14 03:52:52,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=579, Unknown=0, NotChecked=0, Total=756 [2024-11-14 03:52:52,696 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 317 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:52:52,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 45 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:52:52,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-14 03:52:52,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 441. [2024-11-14 03:52:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 431 states have (on average 1.2412993039443156) internal successors, (535), 440 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 535 transitions. [2024-11-14 03:52:52,735 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 535 transitions. Word has length 38 [2024-11-14 03:52:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:52:52,735 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 535 transitions. [2024-11-14 03:52:52,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 535 transitions. [2024-11-14 03:52:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 03:52:52,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:52,739 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-11-14 03:52:52,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 03:52:52,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 03:52:52,940 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:52:52,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1962710193, now seen corresponding path program 1 times [2024-11-14 03:52:52,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:52,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841077070] [2024-11-14 03:52:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:52,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-14 03:52:53,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:53,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841077070] [2024-11-14 03:52:53,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841077070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:52:53,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828722416] [2024-11-14 03:52:53,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:53,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:52:53,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:52:53,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:52:53,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:52:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:53,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:52:53,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:52:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:53,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:52:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:52:53,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828722416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:52:53,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [232055829] [2024-11-14 03:52:53,659 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 03:52:53,659 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:52:53,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:52:53,660 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:52:53,660 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:52:54,221 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:52:54,697 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5633#(<= 2 |ULTIMATE.start_main_~n~0#1|)' at error location [2024-11-14 03:52:54,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:52:54,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:52:54,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2024-11-14 03:52:54,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142097866] [2024-11-14 03:52:54,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:52:54,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 03:52:54,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:52:54,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 03:52:54,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2024-11-14 03:52:54,700 INFO L87 Difference]: Start difference. First operand 441 states and 535 transitions. Second operand has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:56,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:52:56,630 INFO L93 Difference]: Finished difference Result 1478 states and 1907 transitions. [2024-11-14 03:52:56,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-14 03:52:56,631 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-14 03:52:56,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:52:56,636 INFO L225 Difference]: With dead ends: 1478 [2024-11-14 03:52:56,637 INFO L226 Difference]: Without dead ends: 1069 [2024-11-14 03:52:56,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1122, Invalid=3038, Unknown=0, NotChecked=0, Total=4160 [2024-11-14 03:52:56,641 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1368 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:52:56,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 28 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 03:52:56,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2024-11-14 03:52:56,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1023. [2024-11-14 03:52:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1013 states have (on average 1.2013820335636722) internal successors, (1217), 1022 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1217 transitions. [2024-11-14 03:52:56,735 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1217 transitions. Word has length 40 [2024-11-14 03:52:56,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:52:56,736 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1217 transitions. [2024-11-14 03:52:56,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:56,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1217 transitions. [2024-11-14 03:52:56,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-14 03:52:56,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:56,743 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:52:56,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 03:52:56,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 03:52:56,946 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:52:56,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:56,946 INFO L85 PathProgramCache]: Analyzing trace with hash -364301843, now seen corresponding path program 1 times [2024-11-14 03:52:56,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:56,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544670200] [2024-11-14 03:52:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:56,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-14 03:52:57,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:57,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544670200] [2024-11-14 03:52:57,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544670200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:52:57,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822618596] [2024-11-14 03:52:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:57,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:52:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:52:57,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:52:57,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:52:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:57,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 03:52:57,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:52:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 54 proven. 325 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:52:57,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:52:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 54 proven. 325 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:52:58,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822618596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:52:58,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [942753098] [2024-11-14 03:52:58,258 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:52:58,258 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:52:58,258 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:52:58,258 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:52:58,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:53:01,762 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:53:02,819 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9176#(<= 2 |ULTIMATE.start_main_~n~0#1|)' at error location [2024-11-14 03:53:02,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:53:02,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:53:02,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 27 [2024-11-14 03:53:02,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651333501] [2024-11-14 03:53:02,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:53:02,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-14 03:53:02,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:53:02,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-14 03:53:02,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 03:53:02,823 INFO L87 Difference]: Start difference. First operand 1023 states and 1217 transitions. Second operand has 28 states, 28 states have (on average 6.178571428571429) internal successors, (173), 27 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:53:06,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:53:06,182 INFO L93 Difference]: Finished difference Result 3347 states and 4279 transitions. [2024-11-14 03:53:06,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-14 03:53:06,183 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.178571428571429) internal successors, (173), 27 states have internal predecessors, (173), 0 states have call successors, (0), 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 86 [2024-11-14 03:53:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:53:06,194 INFO L225 Difference]: With dead ends: 3347 [2024-11-14 03:53:06,194 INFO L226 Difference]: Without dead ends: 2398 [2024-11-14 03:53:06,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 212 SyntacticMatches, 11 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3424 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2639, Invalid=6291, Unknown=0, NotChecked=0, Total=8930 [2024-11-14 03:53:06,199 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1923 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:53:06,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 61 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 03:53:06,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2024-11-14 03:53:06,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 1799. [2024-11-14 03:53:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1789 states have (on average 1.194522079373952) internal successors, (2137), 1798 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:53:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2137 transitions. [2024-11-14 03:53:06,332 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2137 transitions. Word has length 86 [2024-11-14 03:53:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:53:06,333 INFO L471 AbstractCegarLoop]: Abstraction has 1799 states and 2137 transitions. [2024-11-14 03:53:06,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.178571428571429) internal successors, (173), 27 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:53:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2137 transitions. [2024-11-14 03:53:06,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-14 03:53:06,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:53:06,336 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 2, 1, 1, 1, 1, 1, 1] [2024-11-14 03:53:06,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 03:53:06,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:53:06,537 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:53:06,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:53:06,538 INFO L85 PathProgramCache]: Analyzing trace with hash -588681687, now seen corresponding path program 2 times [2024-11-14 03:53:06,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:53:06,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400672903] [2024-11-14 03:53:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:53:06,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:53:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:53:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2621 backedges. 887 proven. 1639 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-14 03:53:08,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:53:08,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400672903] [2024-11-14 03:53:08,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400672903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:53:08,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672944192] [2024-11-14 03:53:08,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:53:08,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:53:08,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:53:08,263 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:53:08,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 03:53:08,354 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-14 03:53:08,355 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:53:08,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:53:08,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:53:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2621 backedges. 798 proven. 108 refuted. 0 times theorem prover too weak. 1715 trivial. 0 not checked. [2024-11-14 03:53:09,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:53:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2621 backedges. 0 proven. 906 refuted. 0 times theorem prover too weak. 1715 trivial. 0 not checked. [2024-11-14 03:53:09,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672944192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:53:09,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1931149079] [2024-11-14 03:53:09,841 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 03:53:09,841 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:53:09,841 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:53:09,841 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:53:09,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:53:10,238 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:53:11,860 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16475#(<= 2 |ULTIMATE.start_main_~n~0#1|)' at error location [2024-11-14 03:53:11,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:53:11,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:53:11,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 3, 3] total 31 [2024-11-14 03:53:11,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976533070] [2024-11-14 03:53:11,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:53:11,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-14 03:53:11,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:53:11,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-14 03:53:11,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=1282, Unknown=0, NotChecked=0, Total=1640 [2024-11-14 03:53:11,865 INFO L87 Difference]: Start difference. First operand 1799 states and 2137 transitions. Second operand has 32 states, 32 states have (on average 6.90625) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:53:18,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:53:18,158 INFO L93 Difference]: Finished difference Result 4112 states and 4951 transitions. [2024-11-14 03:53:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-14 03:53:18,158 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.90625) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 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 201 [2024-11-14 03:53:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:53:18,168 INFO L225 Difference]: With dead ends: 4112 [2024-11-14 03:53:18,169 INFO L226 Difference]: Without dead ends: 2471 [2024-11-14 03:53:18,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 559 SyntacticMatches, 28 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7102 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=5118, Invalid=14622, Unknown=0, NotChecked=0, Total=19740 [2024-11-14 03:53:18,177 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2640 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2640 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:53:18,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2640 Valid, 14 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 03:53:18,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2024-11-14 03:53:18,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2355. [2024-11-14 03:53:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2345 states have (on average 1.1377398720682304) internal successors, (2668), 2354 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:53:18,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 2668 transitions. [2024-11-14 03:53:18,345 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 2668 transitions. Word has length 201 [2024-11-14 03:53:18,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:53:18,346 INFO L471 AbstractCegarLoop]: Abstraction has 2355 states and 2668 transitions. [2024-11-14 03:53:18,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.90625) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:53:18,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 2668 transitions. [2024-11-14 03:53:18,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2024-11-14 03:53:18,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:53:18,353 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 60, 60, 59, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 03:53:18,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 03:53:18,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:53:18,555 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:53:18,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:53:18,556 INFO L85 PathProgramCache]: Analyzing trace with hash 858709042, now seen corresponding path program 1 times [2024-11-14 03:53:18,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:53:18,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63058845] [2024-11-14 03:53:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:53:18,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:53:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:53:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12520 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 12166 trivial. 0 not checked. [2024-11-14 03:53:19,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:53:19,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63058845] [2024-11-14 03:53:19,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63058845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:53:19,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218933201] [2024-11-14 03:53:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:53:19,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:53:19,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:53:19,192 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:53:19,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 03:53:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:53:19,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 03:53:19,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:53:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 12520 backedges. 6113 proven. 1956 refuted. 0 times theorem prover too weak. 4451 trivial. 0 not checked. [2024-11-14 03:53:20,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:53:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12520 backedges. 6113 proven. 1956 refuted. 0 times theorem prover too weak. 4451 trivial. 0 not checked. [2024-11-14 03:53:22,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218933201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:53:22,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2054681652] [2024-11-14 03:53:22,322 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:53:22,322 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:53:22,322 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:53:22,322 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:53:22,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:53:24,947 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:53:27,016 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26798#(and (<= 0 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| 2147483648)) (exists ((|v_#memory_int_161| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~k~0#1_334| Int)) (and (<= (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_334|) 2147483647) (= |#memory_int| (store |v_#memory_int_161| |ULTIMATE.start_main_~#A~0#1.base| (store (select |v_#memory_int_161| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* 4 |v_ULTIMATE.start_main_~k~0#1_334|) (* (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) |ULTIMATE.start_main_~i~0#1|)) (+ |ULTIMATE.start_main_~C~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_334|)))) (<= 2147483647 |v_ULTIMATE.start_main_~k~0#1_334|) (<= (+ |v_ULTIMATE.start_main_~k~0#1_334| 1) |ULTIMATE.start_main_~n~0#1|))))' at error location [2024-11-14 03:53:27,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:53:27,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:53:27,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 27, 27] total 55 [2024-11-14 03:53:27,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706888385] [2024-11-14 03:53:27,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:53:27,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-14 03:53:27,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:53:27,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-14 03:53:27,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1453, Invalid=2969, Unknown=0, NotChecked=0, Total=4422 [2024-11-14 03:53:27,021 INFO L87 Difference]: Start difference. First operand 2355 states and 2668 transitions. Second operand has 56 states, 56 states have (on average 6.839285714285714) internal successors, (383), 55 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:53:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:53:30,898 INFO L93 Difference]: Finished difference Result 7168 states and 8684 transitions. [2024-11-14 03:53:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-14 03:53:30,900 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 6.839285714285714) internal successors, (383), 55 states have internal predecessors, (383), 0 states have call successors, (0), 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 435 [2024-11-14 03:53:30,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:53:30,920 INFO L225 Difference]: With dead ends: 7168 [2024-11-14 03:53:30,921 INFO L226 Difference]: Without dead ends: 4985 [2024-11-14 03:53:30,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1356 GetRequests, 1180 SyntacticMatches, 60 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9623 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=4359, Invalid=9447, Unknown=0, NotChecked=0, Total=13806 [2024-11-14 03:53:30,929 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 2485 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:53:30,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2485 Valid, 298 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 03:53:30,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2024-11-14 03:53:31,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4985. [2024-11-14 03:53:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4985 states, 4977 states have (on average 1.073940124573036) internal successors, (5345), 4984 states have internal predecessors, (5345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:53:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4985 states to 4985 states and 5345 transitions. [2024-11-14 03:53:31,301 INFO L78 Accepts]: Start accepts. Automaton has 4985 states and 5345 transitions. Word has length 435 [2024-11-14 03:53:31,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:53:31,302 INFO L471 AbstractCegarLoop]: Abstraction has 4985 states and 5345 transitions. [2024-11-14 03:53:31,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 6.839285714285714) internal successors, (383), 55 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:53:31,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4985 states and 5345 transitions. [2024-11-14 03:53:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1423 [2024-11-14 03:53:31,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:53:31,382 INFO L215 NwaCegarLoop]: trace histogram [200, 200, 200, 200, 200, 200, 200, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1] [2024-11-14 03:53:31,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-14 03:53:31,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:53:31,587 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:53:31,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:53:31,587 INFO L85 PathProgramCache]: Analyzing trace with hash 741970168, now seen corresponding path program 1 times [2024-11-14 03:53:31,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:53:31,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779706205] [2024-11-14 03:53:31,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:53:31,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:53:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:53:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 140129 backedges. 70418 proven. 17604 refuted. 0 times theorem prover too weak. 52107 trivial. 0 not checked. [2024-11-14 03:53:34,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:53:34,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779706205] [2024-11-14 03:53:34,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779706205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:53:34,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100949963] [2024-11-14 03:53:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:53:34,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:53:34,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:53:34,691 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:53:34,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 03:53:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:53:35,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-14 03:53:35,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:53:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 140129 backedges. 52808 proven. 8625 refuted. 0 times theorem prover too weak. 78696 trivial. 0 not checked. [2024-11-14 03:53:38,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:53:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 140129 backedges. 52808 proven. 8625 refuted. 0 times theorem prover too weak. 78696 trivial. 0 not checked. [2024-11-14 03:53:42,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100949963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:53:42,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [369463904] [2024-11-14 03:53:42,982 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:53:42,982 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:53:42,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:53:42,983 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:53:42,983 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:53:46,083 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:53:50,863 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40875#true' at error location [2024-11-14 03:53:50,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:53:50,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:53:50,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 53, 53] total 108 [2024-11-14 03:53:50,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296997608] [2024-11-14 03:53:50,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:53:50,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-11-14 03:53:50,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:53:50,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-11-14 03:53:50,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5508, Invalid=8298, Unknown=0, NotChecked=0, Total=13806 [2024-11-14 03:53:50,873 INFO L87 Difference]: Start difference. First operand 4985 states and 5345 transitions. Second operand has 108 states, 108 states have (on average 7.064814814814815) internal successors, (763), 108 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:54:40,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:54:40,400 INFO L93 Difference]: Finished difference Result 17580 states and 19810 transitions. [2024-11-14 03:54:40,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 311 states. [2024-11-14 03:54:40,401 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 7.064814814814815) internal successors, (763), 108 states have internal predecessors, (763), 0 states have call successors, (0), 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 1422 [2024-11-14 03:54:40,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:54:40,436 INFO L225 Difference]: With dead ends: 17580 [2024-11-14 03:54:40,436 INFO L226 Difference]: Without dead ends: 12949 [2024-11-14 03:54:40,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4781 GetRequests, 4208 SyntacticMatches, 200 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89317 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=46475, Invalid=93775, Unknown=0, NotChecked=0, Total=140250 [2024-11-14 03:54:40,459 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 11952 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 1327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11952 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1327 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:54:40,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11952 Valid, 70 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1327 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-14 03:54:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12949 states. [2024-11-14 03:54:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12949 to 12232. [2024-11-14 03:54:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12232 states, 12224 states have (on average 1.0768160994764397) internal successors, (13163), 12231 states have internal predecessors, (13163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:54:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12232 states to 12232 states and 13163 transitions. [2024-11-14 03:54:41,257 INFO L78 Accepts]: Start accepts. Automaton has 12232 states and 13163 transitions. Word has length 1422 [2024-11-14 03:54:41,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:54:41,258 INFO L471 AbstractCegarLoop]: Abstraction has 12232 states and 13163 transitions. [2024-11-14 03:54:41,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 7.064814814814815) internal successors, (763), 108 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:54:41,259 INFO L276 IsEmpty]: Start isEmpty. Operand 12232 states and 13163 transitions. [2024-11-14 03:54:41,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2887 [2024-11-14 03:54:41,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:54:41,405 INFO L215 NwaCegarLoop]: trace histogram [409, 409, 408, 408, 408, 408, 408, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1] [2024-11-14 03:54:41,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 03:54:41,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:54:41,606 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:54:41,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:54:41,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1888811198, now seen corresponding path program 1 times [2024-11-14 03:54:41,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:54:41,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487740839] [2024-11-14 03:54:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:54:41,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:54:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:55:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 584100 backedges. 219414 proven. 36159 refuted. 0 times theorem prover too weak. 328527 trivial. 0 not checked. [2024-11-14 03:55:36,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:55:36,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487740839] [2024-11-14 03:55:36,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487740839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:55:36,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826502258] [2024-11-14 03:55:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:55:36,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:55:36,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:55:36,191 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:55:36,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 03:55:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:55:37,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-14 03:55:37,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:55:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 584100 backedges. 219414 proven. 36159 refuted. 0 times theorem prover too weak. 328527 trivial. 0 not checked. [2024-11-14 03:55:47,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:56:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 584100 backedges. 219414 proven. 36159 refuted. 0 times theorem prover too weak. 328527 trivial. 0 not checked. [2024-11-14 03:56:06,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826502258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:56:06,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [3821535] [2024-11-14 03:56:06,813 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:56:06,813 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:56:06,813 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:56:06,813 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:56:06,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:56:10,031 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:56:11,995 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '102063#(and (<= (+ |ULTIMATE.start_main_~k~0#1| 1) |ULTIMATE.start_main_~n~0#1|) (or (< 0 (+ |ULTIMATE.start_main_~k~0#1| 1)) (and (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= |ULTIMATE.start_main_~n~0#1| 1000))))' at error location [2024-11-14 03:56:11,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:56:11,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:56:11,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105, 105] total 312 [2024-11-14 03:56:11,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399773883] [2024-11-14 03:56:11,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:56:11,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 313 states [2024-11-14 03:56:11,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:56:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 313 interpolants. [2024-11-14 03:56:12,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43332, Invalid=62618, Unknown=0, NotChecked=0, Total=105950 [2024-11-14 03:56:12,012 INFO L87 Difference]: Start difference. First operand 12232 states and 13163 transitions. Second operand has 313 states, 313 states have (on average 6.926517571884984) internal successors, (2168), 312 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:27,099 INFO L93 Difference]: Finished difference Result 36122 states and 40687 transitions. [2024-11-14 03:58:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2024-11-14 03:58:27,100 INFO L78 Accepts]: Start accepts. Automaton has has 313 states, 313 states have (on average 6.926517571884984) internal successors, (2168), 312 states have internal predecessors, (2168), 0 states have call successors, (0), 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 2886 [2024-11-14 03:58:27,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:27,173 INFO L225 Difference]: With dead ends: 36122 [2024-11-14 03:58:27,173 INFO L226 Difference]: Without dead ends: 24608 [2024-11-14 03:58:27,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8864 GetRequests, 8433 SyntacticMatches, 4 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71312 ImplicationChecksByTransitivity, 50.5s TimeCoverageRelationStatistics Valid=65065, Invalid=118547, Unknown=0, NotChecked=0, Total=183612 [2024-11-14 03:58:27,198 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 10388 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 1203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10388 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 3927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1203 IncrementalHoareTripleChecker+Valid, 2724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:27,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10388 Valid, 1146 Invalid, 3927 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1203 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-14 03:58:27,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24608 states. [2024-11-14 03:58:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24608 to 24608. [2024-11-14 03:58:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24608 states, 24600 states have (on average 1.076219512195122) internal successors, (26475), 24607 states have internal predecessors, (26475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24608 states to 24608 states and 26475 transitions. [2024-11-14 03:58:28,315 INFO L78 Accepts]: Start accepts. Automaton has 24608 states and 26475 transitions. Word has length 2886 [2024-11-14 03:58:28,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:28,317 INFO L471 AbstractCegarLoop]: Abstraction has 24608 states and 26475 transitions. [2024-11-14 03:58:28,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 313 states, 313 states have (on average 6.926517571884984) internal successors, (2168), 312 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 24608 states and 26475 transitions. [2024-11-14 03:58:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5799 [2024-11-14 03:58:28,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:28,552 INFO L215 NwaCegarLoop]: trace histogram [825, 825, 824, 824, 824, 824, 824, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1] [2024-11-14 03:58:28,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 03:58:28,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 03:58:28,753 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-14 03:58:28,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:28,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1788534082, now seen corresponding path program 2 times [2024-11-14 03:58:28,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:28,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931609335] [2024-11-14 03:58:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:28,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2379348 backedges. 893022 proven. 148011 refuted. 0 times theorem prover too weak. 1338315 trivial. 0 not checked. [2024-11-14 04:02:57,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:02:57,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931609335] [2024-11-14 04:02:57,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931609335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:02:57,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164884266] [2024-11-14 04:02:57,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:02:57,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:02:57,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:02:57,695 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:02:57,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94e207ab-0111-4a37-94fe-85822826959d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 04:02:58,863 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-14 04:02:58,863 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:02:58,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:02:58,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:03:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2379348 backedges. 0 proven. 2482 refuted. 0 times theorem prover too weak. 2376866 trivial. 0 not checked. [2024-11-14 04:03:18,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:03:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2379348 backedges. 0 proven. 2482 refuted. 0 times theorem prover too weak. 2376866 trivial. 0 not checked. [2024-11-14 04:03:31,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164884266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:03:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1443941763] [2024-11-14 04:03:31,185 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:03:31,185 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:03:31,186 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:03:31,186 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:03:31,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:03:33,892 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:06:29,545 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '206764#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= (+ |ULTIMATE.start_main_~k~0#1| 1) |ULTIMATE.start_main_~n~0#1|))' at error location [2024-11-14 04:06:29,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:06:29,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:06:29,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [209, 2, 2] total 213 [2024-11-14 04:06:29,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383178473] [2024-11-14 04:06:29,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:06:29,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 214 states [2024-11-14 04:06:29,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2024-11-14 04:06:29,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21791, Invalid=28161, Unknown=0, NotChecked=0, Total=49952 [2024-11-14 04:06:29,576 INFO L87 Difference]: Start difference. First operand 24608 states and 26475 transitions. Second operand has 214 states, 214 states have (on average 7.02803738317757) internal successors, (1504), 213 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)