./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ --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 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:11:08,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:11:08,168 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:11:08,181 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:11:08,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:11:08,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:11:08,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:11:08,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:11:08,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:11:08,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:11:08,238 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:11:08,240 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:11:08,240 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:11:08,242 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:11:08,243 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:11:08,244 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:11:08,244 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:11:08,245 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:11:08,245 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:11:08,246 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:11:08,246 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:11:08,247 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:11:08,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:11:08,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:11:08,250 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:11:08,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:11:08,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:11:08,252 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:11:08,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:11:08,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:11:08,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:11:08,255 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:11:08,255 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:11:08,256 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:11:08,272 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:11:08,272 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:11:08,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:11:08,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:11:08,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:11:08,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:11:08,274 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:11:08,274 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:11:08,275 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:11:08,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:11:08,276 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:11:08,276 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:11:08,276 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:11:08,277 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0414607cdfaf86248673acc731020b311087823754eb03e229e19e48245fa120 [2023-11-19 04:11:08,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:11:08,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:11:08,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:11:08,778 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:11:08,779 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:11:08,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2023-11-19 04:11:11,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:11:12,162 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:11:12,163 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2023-11-19 04:11:12,172 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/data/cae536211/9f168262eedb4ce986e83509794321e0/FLAG9347d7214 [2023-11-19 04:11:12,188 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/data/cae536211/9f168262eedb4ce986e83509794321e0 [2023-11-19 04:11:12,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:11:12,192 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:11:12,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:11:12,194 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:11:12,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:11:12,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b93727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12, skipping insertion in model container [2023-11-19 04:11:12,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:11:12,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:11:12,462 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:11:12,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:11:12,500 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:11:12,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12 WrapperNode [2023-11-19 04:11:12,500 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:11:12,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:11:12,502 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:11:12,502 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:11:12,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,539 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2023-11-19 04:11:12,540 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:11:12,541 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:11:12,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:11:12,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:11:12,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,563 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:11:12,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:11:12,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:11:12,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:11:12,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12" (1/1) ... [2023-11-19 04:11:12,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:11:12,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:12,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:11:12,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:11:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:11:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:11:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:11:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:11:12,751 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:11:12,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:11:12,980 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:11:13,043 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:11:13,051 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:11:13,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:13 BoogieIcfgContainer [2023-11-19 04:11:13,058 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:11:13,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:11:13,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:11:13,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:11:13,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:11:12" (1/3) ... [2023-11-19 04:11:13,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:13, skipping insertion in model container [2023-11-19 04:11:13,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:12" (2/3) ... [2023-11-19 04:11:13,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:13, skipping insertion in model container [2023-11-19 04:11:13,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:13" (3/3) ... [2023-11-19 04:11:13,077 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2023-11-19 04:11:13,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:11:13,094 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 04:11:13,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:11:13,150 INFO L357 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, mHoare=true, 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;@74064dc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:11:13,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 04:11:13,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 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) [2023-11-19 04:11:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:11:13,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:13,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:11:13,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:11:13,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2301147, now seen corresponding path program 1 times [2023-11-19 04:11:13,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:13,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701008170] [2023-11-19 04:11:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:13,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:13,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:13,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701008170] [2023-11-19 04:11:13,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701008170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:13,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:13,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:11:13,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845399590] [2023-11-19 04:11:13,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:13,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:11:13,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:13,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:11:13,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:11:13,432 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2023-11-19 04:11:13,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:13,488 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-11-19 04:11:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:11:13,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2023-11-19 04:11:13,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:13,498 INFO L225 Difference]: With dead ends: 14 [2023-11-19 04:11:13,499 INFO L226 Difference]: Without dead ends: 10 [2023-11-19 04:11:13,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:11:13,509 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:13,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:11:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-19 04:11:13,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-19 04:11:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 states have internal predecessors, (10), 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) [2023-11-19 04:11:13,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-11-19 04:11:13,543 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 4 [2023-11-19 04:11:13,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:13,543 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-11-19 04:11:13,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2023-11-19 04:11:13,545 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-11-19 04:11:13,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:11:13,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:13,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:11:13,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:11:13,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:11:13,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:13,548 INFO L85 PathProgramCache]: Analyzing trace with hash 71335607, now seen corresponding path program 1 times [2023-11-19 04:11:13,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:13,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505274369] [2023-11-19 04:11:13,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:13,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:13,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:13,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505274369] [2023-11-19 04:11:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505274369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:13,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:13,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:11:13,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981810201] [2023-11-19 04:11:13,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:13,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:11:13,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:13,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:11:13,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:11:13,683 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2023-11-19 04:11:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:13,731 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-19 04:11:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:11:13,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 [2023-11-19 04:11:13,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:13,733 INFO L225 Difference]: With dead ends: 14 [2023-11-19 04:11:13,733 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 04:11:13,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:11:13,737 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:13,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:11:13,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 04:11:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-19 04:11:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-19 04:11:13,745 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2023-11-19 04:11:13,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:13,746 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-19 04:11:13,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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) [2023-11-19 04:11:13,746 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-19 04:11:13,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:11:13,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:13,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:11:13,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:11:13,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:11:13,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:13,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2083563427, now seen corresponding path program 1 times [2023-11-19 04:11:13,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:13,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993772151] [2023-11-19 04:11:13,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:13,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:13,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:13,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993772151] [2023-11-19 04:11:13,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993772151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:13,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:13,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:11:13,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178936713] [2023-11-19 04:11:13,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:13,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:11:13,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:13,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:11:13,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:11:13,815 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2023-11-19 04:11:13,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:13,841 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-11-19 04:11:13,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:11:13,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 [2023-11-19 04:11:13,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:13,842 INFO L225 Difference]: With dead ends: 17 [2023-11-19 04:11:13,843 INFO L226 Difference]: Without dead ends: 16 [2023-11-19 04:11:13,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:11:13,845 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:13,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:11:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-19 04:11:13,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2023-11-19 04:11:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 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) [2023-11-19 04:11:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-19 04:11:13,850 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 6 [2023-11-19 04:11:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:13,850 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-19 04:11:13,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2023-11-19 04:11:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-19 04:11:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:11:13,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:13,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:11:13,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:11:13,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:11:13,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash -165956743, now seen corresponding path program 1 times [2023-11-19 04:11:13,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:13,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179048417] [2023-11-19 04:11:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:13,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:13,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:13,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179048417] [2023-11-19 04:11:13,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179048417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:13,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:13,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:11:13,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819210505] [2023-11-19 04:11:13,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:13,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:11:13,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:13,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:11:13,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:11:13,947 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-11-19 04:11:13,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:13,983 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-19 04:11:13,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:11:13,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2023-11-19 04:11:13,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:13,986 INFO L225 Difference]: With dead ends: 14 [2023-11-19 04:11:13,986 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 04:11:13,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:11:13,991 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:13,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:11:13,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 04:11:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-19 04:11:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-19 04:11:14,006 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2023-11-19 04:11:14,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:14,008 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-19 04:11:14,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-11-19 04:11:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-19 04:11:14,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:11:14,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:14,010 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 04:11:14,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:11:14,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:11:14,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:14,012 INFO L85 PathProgramCache]: Analyzing trace with hash -509927273, now seen corresponding path program 1 times [2023-11-19 04:11:14,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:14,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543394871] [2023-11-19 04:11:14,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:14,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:14,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:14,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543394871] [2023-11-19 04:11:14,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543394871] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:11:14,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60041696] [2023-11-19 04:11:14,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:14,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:11:14,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:14,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:11:14,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:11:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:14,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:11:14,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:11:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:14,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:11:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:14,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60041696] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:11:14,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [844833523] [2023-11-19 04:11:14,333 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-19 04:11:14,333 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:11:14,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:11:14,343 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:11:14,344 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:11:15,070 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:11:15,404 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '227#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|))' at error location [2023-11-19 04:11:15,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:11:15,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:11:15,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-19 04:11:15,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360032671] [2023-11-19 04:11:15,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:11:15,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 04:11:15,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:15,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 04:11:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:11:15,409 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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) [2023-11-19 04:11:15,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:15,518 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2023-11-19 04:11:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 04:11:15,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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 10 [2023-11-19 04:11:15,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:15,519 INFO L225 Difference]: With dead ends: 30 [2023-11-19 04:11:15,520 INFO L226 Difference]: Without dead ends: 29 [2023-11-19 04:11:15,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-11-19 04:11:15,522 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:15,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 24 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:11:15,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-19 04:11:15,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-11-19 04:11:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2023-11-19 04:11:15,530 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2023-11-19 04:11:15,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:15,530 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2023-11-19 04:11:15,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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) [2023-11-19 04:11:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2023-11-19 04:11:15,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:11:15,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:15,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 04:11:15,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:11:15,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:11:15,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:11:15,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:15,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1372123773, now seen corresponding path program 1 times [2023-11-19 04:11:15,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:15,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735636930] [2023-11-19 04:11:15,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:15,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:15,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:15,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735636930] [2023-11-19 04:11:15,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735636930] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:11:15,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631348680] [2023-11-19 04:11:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:15,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:11:15,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:15,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:11:15,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:11:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:15,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 04:11:15,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:11:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:16,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:11:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:16,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631348680] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:11:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1890963820] [2023-11-19 04:11:16,219 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-19 04:11:16,219 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:11:16,219 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:11:16,220 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:11:16,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:11:16,573 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:11:16,951 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '385#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_#t~post5#1| 2147483648) 0) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~n~0#1|))' at error location [2023-11-19 04:11:16,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:11:16,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:11:16,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2023-11-19 04:11:16,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514496886] [2023-11-19 04:11:16,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:11:16,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 04:11:16,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:16,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 04:11:16,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-11-19 04:11:16,954 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:17,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:17,293 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2023-11-19 04:11:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 04:11:17,293 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 04:11:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:17,294 INFO L225 Difference]: With dead ends: 36 [2023-11-19 04:11:17,294 INFO L226 Difference]: Without dead ends: 35 [2023-11-19 04:11:17,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 04:11:17,296 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 34 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:17,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 31 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:11:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-19 04:11:17,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-11-19 04:11:17,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 states have internal predecessors, (34), 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) [2023-11-19 04:11:17,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2023-11-19 04:11:17,322 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 11 [2023-11-19 04:11:17,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:17,322 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2023-11-19 04:11:17,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:17,323 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2023-11-19 04:11:17,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 04:11:17,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:17,324 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2023-11-19 04:11:17,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:11:17,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:11:17,525 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:11:17,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:17,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1209149769, now seen corresponding path program 2 times [2023-11-19 04:11:17,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:17,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620625295] [2023-11-19 04:11:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:17,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:17,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:17,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620625295] [2023-11-19 04:11:17,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620625295] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:11:17,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415203321] [2023-11-19 04:11:17,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:11:17,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:11:17,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:17,780 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:11:17,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:11:17,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 04:11:17,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:11:17,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:11:17,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:11:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-19 04:11:17,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:11:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-19 04:11:17,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415203321] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:11:17,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [410169820] [2023-11-19 04:11:17,970 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-19 04:11:17,970 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:11:17,971 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:11:17,971 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:11:17,971 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:11:18,267 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:11:18,597 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '652#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|))' at error location [2023-11-19 04:11:18,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:11:18,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:11:18,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2023-11-19 04:11:18,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342441469] [2023-11-19 04:11:18,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:11:18,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 04:11:18,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:18,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 04:11:18,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2023-11-19 04:11:18,600 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 15 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 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) [2023-11-19 04:11:18,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:18,874 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2023-11-19 04:11:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 04:11:18,875 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 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 25 [2023-11-19 04:11:18,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:18,876 INFO L225 Difference]: With dead ends: 33 [2023-11-19 04:11:18,876 INFO L226 Difference]: Without dead ends: 32 [2023-11-19 04:11:18,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 04:11:18,877 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 48 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:18,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 21 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:11:18,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-19 04:11:18,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-19 04:11:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:18,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2023-11-19 04:11:18,884 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2023-11-19 04:11:18,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:18,884 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2023-11-19 04:11:18,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 15 states have internal predecessors, (35), 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) [2023-11-19 04:11:18,885 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2023-11-19 04:11:18,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 04:11:18,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:18,886 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1] [2023-11-19 04:11:18,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:11:19,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 04:11:19,087 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:11:19,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:19,087 INFO L85 PathProgramCache]: Analyzing trace with hash -199996803, now seen corresponding path program 2 times [2023-11-19 04:11:19,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:19,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37655270] [2023-11-19 04:11:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:19,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:19,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37655270] [2023-11-19 04:11:19,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37655270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:11:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279265021] [2023-11-19 04:11:19,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:11:19,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:11:19,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:19,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:11:19,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:11:19,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-19 04:11:19,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:11:19,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 04:11:19,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:11:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:19,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:11:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:20,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279265021] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:11:20,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [633938087] [2023-11-19 04:11:20,875 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-19 04:11:20,875 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:11:20,875 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:11:20,875 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:11:20,875 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:11:21,168 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:11:21,786 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '989#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_#t~post5#1| 2147483648) 0) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~n~0#1|))' at error location [2023-11-19 04:11:21,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:11:21,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:11:21,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 19] total 47 [2023-11-19 04:11:21,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316696345] [2023-11-19 04:11:21,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:11:21,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-19 04:11:21,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:21,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-19 04:11:21,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=2630, Unknown=0, NotChecked=0, Total=2970 [2023-11-19 04:11:21,790 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 48 states have internal predecessors, (89), 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) [2023-11-19 04:11:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:24,141 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2023-11-19 04:11:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-19 04:11:24,142 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 48 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-19 04:11:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:24,143 INFO L225 Difference]: With dead ends: 94 [2023-11-19 04:11:24,143 INFO L226 Difference]: Without dead ends: 93 [2023-11-19 04:11:24,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1534, Invalid=7022, Unknown=0, NotChecked=0, Total=8556 [2023-11-19 04:11:24,149 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 159 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:24,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 48 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:11:24,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-19 04:11:24,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2023-11-19 04:11:24,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 states have internal predecessors, (92), 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) [2023-11-19 04:11:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2023-11-19 04:11:24,162 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 31 [2023-11-19 04:11:24,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:24,162 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2023-11-19 04:11:24,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 48 states have internal predecessors, (89), 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) [2023-11-19 04:11:24,163 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2023-11-19 04:11:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 04:11:24,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:24,166 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1] [2023-11-19 04:11:24,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:11:24,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:11:24,390 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:11:24,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:24,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2018398845, now seen corresponding path program 3 times [2023-11-19 04:11:24,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:24,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137211636] [2023-11-19 04:11:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:24,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:25,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137211636] [2023-11-19 04:11:25,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137211636] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:11:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731150264] [2023-11-19 04:11:25,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 04:11:25,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:11:25,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:25,941 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:11:25,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:11:26,057 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 04:11:26,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:11:26,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-19 04:11:26,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:11:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:29,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:11:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:36,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731150264] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:11:36,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [199458319] [2023-11-19 04:11:36,162 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-19 04:11:36,162 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:11:36,163 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:11:36,163 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:11:36,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:11:36,456 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:11:37,705 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1978#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_#t~post5#1| 2147483648) 0) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~n~0#1|))' at error location [2023-11-19 04:11:37,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:11:37,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:11:37,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 55, 55] total 143 [2023-11-19 04:11:37,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296555245] [2023-11-19 04:11:37,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:11:37,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2023-11-19 04:11:37,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:37,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2023-11-19 04:11:37,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2488, Invalid=20162, Unknown=0, NotChecked=0, Total=22650 [2023-11-19 04:11:37,719 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 144 states, 143 states have (on average 1.881118881118881) internal successors, (269), 144 states have internal predecessors, (269), 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) [2023-11-19 04:12:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:03,795 INFO L93 Difference]: Finished difference Result 274 states and 309 transitions. [2023-11-19 04:12:03,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2023-11-19 04:12:03,796 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 143 states have (on average 1.881118881118881) internal successors, (269), 144 states have internal predecessors, (269), 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 91 [2023-11-19 04:12:03,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:03,799 INFO L225 Difference]: With dead ends: 274 [2023-11-19 04:12:03,799 INFO L226 Difference]: Without dead ends: 273 [2023-11-19 04:12:03,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14709 ImplicationChecksByTransitivity, 33.5s TimeCoverageRelationStatistics Valid=13540, Invalid=60716, Unknown=0, NotChecked=0, Total=74256 [2023-11-19 04:12:03,815 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1074 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4930 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 5258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 4930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:03,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 112 Invalid, 5258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 4930 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-19 04:12:03,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-19 04:12:03,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 272. [2023-11-19 04:12:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.003690036900369) internal successors, (272), 271 states have internal predecessors, (272), 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) [2023-11-19 04:12:03,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2023-11-19 04:12:03,863 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 91 [2023-11-19 04:12:03,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:03,864 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2023-11-19 04:12:03,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 143 states have (on average 1.881118881118881) internal successors, (269), 144 states have internal predecessors, (269), 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) [2023-11-19 04:12:03,867 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2023-11-19 04:12:03,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-11-19 04:12:03,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:03,881 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 53, 53, 1, 1, 1] [2023-11-19 04:12:03,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:04,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_685ccdbd-aff0-4e2b-bbf7-6edf2063b685/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:04,082 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-19 04:12:04,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:04,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1226074749, now seen corresponding path program 4 times [2023-11-19 04:12:04,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:04,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506906778] [2023-11-19 04:12:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:04,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat