./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1619c1c02ba7c9b660af32e6427e3b3d5cd6ca3ff286b9db386918ae0c8b508c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:31:08,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:31:08,233 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-14 04:31:08,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:31:08,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:31:08,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:31:08,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:31:08,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:31:08,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:31:08,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:31:08,276 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:31:08,277 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:31:08,277 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:31:08,277 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:31:08,277 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:31:08,277 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:31:08,277 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:31:08,277 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:31:08,277 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:31:08,278 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:31:08,278 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:31:08,278 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:31:08,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:31:08,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:31:08,279 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:31:08,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:31:08,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:31:08,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:31:08,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:31:08,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:31:08,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:31:08,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:31:08,280 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 04:31:08,280 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:31:08,280 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:31:08,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:31:08,280 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:31:08,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:31:08,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:31:08,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:31:08,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:31:08,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:31:08,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:31:08,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:31:08,282 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:31:08,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:31:08,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:31:08,282 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:31:08,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:31:08,282 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1619c1c02ba7c9b660af32e6427e3b3d5cd6ca3ff286b9db386918ae0c8b508c [2024-11-14 04:31:08,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:31:08,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:31:08,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:31:08,738 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:31:08,738 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:31:08,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c Unable to find full path for "g++" [2024-11-14 04:31:11,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:31:11,685 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:31:11,686 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound20.c [2024-11-14 04:31:11,696 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/data/604e0baf2/23723ece83b548a0a9cdf05c4d6e4159/FLAGfe0c2b3d7 [2024-11-14 04:31:11,719 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/data/604e0baf2/23723ece83b548a0a9cdf05c4d6e4159 [2024-11-14 04:31:11,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:31:11,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:31:11,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:31:11,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:31:11,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:31:11,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:31:11" (1/1) ... [2024-11-14 04:31:11,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533e41e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:11, skipping insertion in model container [2024-11-14 04:31:11,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:31:11" (1/1) ... [2024-11-14 04:31:11,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:31:12,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:31:12,019 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:31:12,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:31:12,064 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:31:12,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12 WrapperNode [2024-11-14 04:31:12,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:31:12,066 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:31:12,066 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:31:12,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:31:12,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12" (1/1) ... [2024-11-14 04:31:12,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12" (1/1) ... [2024-11-14 04:31:12,113 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2024-11-14 04:31:12,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:31:12,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:31:12,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:31:12,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:31:12,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12" (1/1) ... [2024-11-14 04:31:12,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12" (1/1) ... [2024-11-14 04:31:12,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12" (1/1) ... [2024-11-14 04:31:12,133 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12" (1/1) ... [2024-11-14 04:31:12,143 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12" (1/1) ... [2024-11-14 04:31:12,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12" (1/1) ... [2024-11-14 04:31:12,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12" (1/1) ... [2024-11-14 04:31:12,158 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12" (1/1) ... [2024-11-14 04:31:12,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:31:12,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:31:12,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:31:12,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:31:12,171 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12" (1/1) ... [2024-11-14 04:31:12,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:31:12,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:12,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:31:12,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:31:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:31:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:31:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:31:12,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:31:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 04:31:12,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 04:31:12,375 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:31:12,378 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:31:13,038 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-14 04:31:13,039 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:31:13,129 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:31:13,130 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 04:31:13,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:31:13 BoogieIcfgContainer [2024-11-14 04:31:13,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:31:13,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:31:13,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:31:13,145 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:31:13,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:31:11" (1/3) ... [2024-11-14 04:31:13,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35603f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:31:13, skipping insertion in model container [2024-11-14 04:31:13,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:31:12" (2/3) ... [2024-11-14 04:31:13,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35603f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:31:13, skipping insertion in model container [2024-11-14 04:31:13,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:31:13" (3/3) ... [2024-11-14 04:31:13,151 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound20.c [2024-11-14 04:31:13,176 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:31:13,181 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hard2_valuebound20.c that has 2 procedures, 65 locations, 1 initial locations, 2 loop locations, and 24 error locations. [2024-11-14 04:31:13,266 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:31:13,293 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@58152a2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:31:13,293 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-14 04:31:13,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 32 states have (on average 1.90625) internal successors, (61), 56 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 04:31:13,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 04:31:13,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:13,313 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 04:31:13,314 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:13,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:13,323 INFO L85 PathProgramCache]: Analyzing trace with hash 5353265, now seen corresponding path program 1 times [2024-11-14 04:31:13,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:13,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205504190] [2024-11-14 04:31:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:13,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:31:13,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:13,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205504190] [2024-11-14 04:31:13,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205504190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:13,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:13,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:31:13,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107986433] [2024-11-14 04:31:13,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:13,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:31:13,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:13,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:31:13,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:31:13,577 INFO L87 Difference]: Start difference. First operand has 65 states, 32 states have (on average 1.90625) internal successors, (61), 56 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:13,638 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2024-11-14 04:31:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:31:13,641 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 04:31:13,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:13,650 INFO L225 Difference]: With dead ends: 112 [2024-11-14 04:31:13,650 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 04:31:13,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:31:13,658 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:13,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:31:13,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 04:31:13,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-14 04:31:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 54 states have internal predecessors, (57), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:31:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2024-11-14 04:31:13,707 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 4 [2024-11-14 04:31:13,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:13,708 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2024-11-14 04:31:13,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:31:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2024-11-14 04:31:13,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 04:31:13,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:13,710 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:13,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:31:13,710 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:13,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:13,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1735968466, now seen corresponding path program 1 times [2024-11-14 04:31:13,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:13,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865044474] [2024-11-14 04:31:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:13,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:31:13,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885371115] [2024-11-14 04:31:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:13,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:13,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:13,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:31:13,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:31:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:13,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:31:13,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:31:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:31:13,956 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:31:13,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:13,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865044474] [2024-11-14 04:31:13,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:31:13,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885371115] [2024-11-14 04:31:13,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885371115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:13,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:13,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:31:13,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051028989] [2024-11-14 04:31:13,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:13,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:31:13,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:13,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:31:13,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:13,962 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:31:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:14,123 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2024-11-14 04:31:14,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:14,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 9 [2024-11-14 04:31:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:14,126 INFO L225 Difference]: With dead ends: 131 [2024-11-14 04:31:14,126 INFO L226 Difference]: Without dead ends: 84 [2024-11-14 04:31:14,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:14,127 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 16 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:14,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 85 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:14,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-14 04:31:14,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-11-14 04:31:14,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.702127659574468) internal successors, (80), 70 states have internal predecessors, (80), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 04:31:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-11-14 04:31:14,144 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 9 [2024-11-14 04:31:14,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:14,146 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-11-14 04:31:14,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:31:14,146 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-11-14 04:31:14,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 04:31:14,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:14,150 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:14,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:31:14,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:14,351 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:14,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:14,352 INFO L85 PathProgramCache]: Analyzing trace with hash -17467134, now seen corresponding path program 1 times [2024-11-14 04:31:14,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:14,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856418151] [2024-11-14 04:31:14,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:14,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:31:14,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:14,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856418151] [2024-11-14 04:31:14,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856418151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:14,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:14,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:31:14,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470293733] [2024-11-14 04:31:14,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:14,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:31:14,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:14,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:31:14,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:14,666 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 04:31:14,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:14,814 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2024-11-14 04:31:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:14,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 15 [2024-11-14 04:31:14,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:14,819 INFO L225 Difference]: With dead ends: 92 [2024-11-14 04:31:14,819 INFO L226 Difference]: Without dead ends: 90 [2024-11-14 04:31:14,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:14,825 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:14,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 96 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-14 04:31:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2024-11-14 04:31:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.6595744680851063) internal successors, (78), 70 states have internal predecessors, (78), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 04:31:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2024-11-14 04:31:14,852 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 15 [2024-11-14 04:31:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:14,852 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2024-11-14 04:31:14,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 04:31:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2024-11-14 04:31:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 04:31:14,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:14,856 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:14,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:31:14,856 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:14,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash -541482501, now seen corresponding path program 1 times [2024-11-14 04:31:14,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:14,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942542064] [2024-11-14 04:31:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:14,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:31:14,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232328997] [2024-11-14 04:31:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:14,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:14,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:14,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:31:14,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:31:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:15,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:31:15,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:31:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:31:15,071 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:31:15,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:15,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942542064] [2024-11-14 04:31:15,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:31:15,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232328997] [2024-11-14 04:31:15,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232328997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:15,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:15,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:31:15,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764257037] [2024-11-14 04:31:15,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:15,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:31:15,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:31:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:15,076 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 04:31:15,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:15,269 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2024-11-14 04:31:15,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:15,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2024-11-14 04:31:15,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:15,272 INFO L225 Difference]: With dead ends: 117 [2024-11-14 04:31:15,274 INFO L226 Difference]: Without dead ends: 113 [2024-11-14 04:31:15,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:15,276 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 39 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:15,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 78 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:31:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-14 04:31:15,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 99. [2024-11-14 04:31:15,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 62 states have (on average 1.6290322580645162) internal successors, (101), 85 states have internal predecessors, (101), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-14 04:31:15,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2024-11-14 04:31:15,293 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 16 [2024-11-14 04:31:15,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:15,293 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2024-11-14 04:31:15,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 04:31:15,294 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2024-11-14 04:31:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 04:31:15,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:15,294 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:15,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 04:31:15,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:15,499 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:15,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:15,500 INFO L85 PathProgramCache]: Analyzing trace with hash -673638051, now seen corresponding path program 1 times [2024-11-14 04:31:15,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:15,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599653619] [2024-11-14 04:31:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:15,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:31:15,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:15,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599653619] [2024-11-14 04:31:15,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599653619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:15,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:15,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:31:15,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506594743] [2024-11-14 04:31:15,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:15,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:31:15,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:15,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:31:15,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:31:15,749 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:31:16,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:16,447 INFO L93 Difference]: Finished difference Result 115 states and 139 transitions. [2024-11-14 04:31:16,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:31:16,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2024-11-14 04:31:16,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:16,449 INFO L225 Difference]: With dead ends: 115 [2024-11-14 04:31:16,449 INFO L226 Difference]: Without dead ends: 114 [2024-11-14 04:31:16,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:31:16,451 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 129 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:16,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 68 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 04:31:16,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-14 04:31:16,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2024-11-14 04:31:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.5909090909090908) internal successors, (105), 89 states have internal predecessors, (105), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-14 04:31:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2024-11-14 04:31:16,495 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 18 [2024-11-14 04:31:16,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:16,495 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2024-11-14 04:31:16,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:31:16,496 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2024-11-14 04:31:16,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 04:31:16,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:16,497 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:16,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:31:16,497 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:16,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:16,498 INFO L85 PathProgramCache]: Analyzing trace with hash 592056984, now seen corresponding path program 1 times [2024-11-14 04:31:16,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:16,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332586803] [2024-11-14 04:31:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:16,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:31:16,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:16,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332586803] [2024-11-14 04:31:16,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332586803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:16,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:16,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:31:16,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797350780] [2024-11-14 04:31:16,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:16,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:31:16,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:16,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:31:16,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:31:16,758 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 04:31:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:17,389 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2024-11-14 04:31:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:31:17,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2024-11-14 04:31:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:17,393 INFO L225 Difference]: With dead ends: 110 [2024-11-14 04:31:17,393 INFO L226 Difference]: Without dead ends: 109 [2024-11-14 04:31:17,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:31:17,394 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 74 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:17,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 101 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 04:31:17,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-14 04:31:17,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2024-11-14 04:31:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 90 states have internal predecessors, (104), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-14 04:31:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2024-11-14 04:31:17,428 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 19 [2024-11-14 04:31:17,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:17,428 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2024-11-14 04:31:17,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 04:31:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2024-11-14 04:31:17,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 04:31:17,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:17,430 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:17,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:31:17,430 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:17,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:17,431 INFO L85 PathProgramCache]: Analyzing trace with hash -682443809, now seen corresponding path program 1 times [2024-11-14 04:31:17,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:17,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968711715] [2024-11-14 04:31:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:17,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:31:17,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483092963] [2024-11-14 04:31:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:17,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:17,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:17,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:31:17,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:31:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:17,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:31:17,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:31:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 04:31:17,755 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:31:17,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:17,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968711715] [2024-11-14 04:31:17,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:31:17,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483092963] [2024-11-14 04:31:17,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483092963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:17,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:17,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:31:17,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050659513] [2024-11-14 04:31:17,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:17,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:31:17,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:17,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:31:17,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:31:17,758 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:31:17,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:17,947 INFO L93 Difference]: Finished difference Result 120 states and 148 transitions. [2024-11-14 04:31:17,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:31:17,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 26 [2024-11-14 04:31:17,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:17,950 INFO L225 Difference]: With dead ends: 120 [2024-11-14 04:31:17,950 INFO L226 Difference]: Without dead ends: 110 [2024-11-14 04:31:17,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:31:17,951 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 38 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:17,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 97 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:31:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-14 04:31:17,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-14 04:31:17,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 94 states have internal predecessors, (107), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-14 04:31:17,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2024-11-14 04:31:17,980 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 26 [2024-11-14 04:31:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:17,980 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2024-11-14 04:31:17,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:31:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2024-11-14 04:31:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 04:31:17,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:17,982 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:18,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:31:18,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:18,183 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:18,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:18,184 INFO L85 PathProgramCache]: Analyzing trace with hash 319078454, now seen corresponding path program 1 times [2024-11-14 04:31:18,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:18,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724422158] [2024-11-14 04:31:18,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:18,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:31:18,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720604330] [2024-11-14 04:31:18,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:18,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:18,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:18,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:31:18,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:31:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:18,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:31:18,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:31:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 04:31:18,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:31:19,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:19,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724422158] [2024-11-14 04:31:19,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:31:19,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720604330] [2024-11-14 04:31:19,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720604330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:31:19,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2084452124] [2024-11-14 04:31:19,316 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:31:19,317 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:31:19,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:31:19,326 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:31:19,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:31:22,708 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-14 04:31:22,713 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:31:24,016 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2072#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~A~0#1| 20) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-14 04:31:24,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:31:24,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:31:24,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2024-11-14 04:31:24,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138987099] [2024-11-14 04:31:24,018 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:31:24,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:31:24,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:24,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:31:24,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:31:24,020 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:31:24,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:24,234 INFO L93 Difference]: Finished difference Result 186 states and 239 transitions. [2024-11-14 04:31:24,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:31:24,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2024-11-14 04:31:24,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:24,238 INFO L225 Difference]: With dead ends: 186 [2024-11-14 04:31:24,238 INFO L226 Difference]: Without dead ends: 182 [2024-11-14 04:31:24,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:31:24,240 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 59 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:24,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 90 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:31:24,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-14 04:31:24,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2024-11-14 04:31:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 126 states have (on average 1.4206349206349207) internal successors, (179), 145 states have internal predecessors, (179), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-14 04:31:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 225 transitions. [2024-11-14 04:31:24,269 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 225 transitions. Word has length 27 [2024-11-14 04:31:24,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:24,270 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 225 transitions. [2024-11-14 04:31:24,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:31:24,270 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 225 transitions. [2024-11-14 04:31:24,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 04:31:24,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:24,272 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:24,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 04:31:24,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:24,476 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:24,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1516011015, now seen corresponding path program 1 times [2024-11-14 04:31:24,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:24,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497997544] [2024-11-14 04:31:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:24,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 04:31:24,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:24,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497997544] [2024-11-14 04:31:24,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497997544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:24,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:24,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:31:24,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391201735] [2024-11-14 04:31:24,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:24,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:31:24,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:24,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:31:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:31:24,683 INFO L87 Difference]: Start difference. First operand 170 states and 225 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:31:25,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:25,294 INFO L93 Difference]: Finished difference Result 182 states and 237 transitions. [2024-11-14 04:31:25,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:31:25,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2024-11-14 04:31:25,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:25,297 INFO L225 Difference]: With dead ends: 182 [2024-11-14 04:31:25,297 INFO L226 Difference]: Without dead ends: 181 [2024-11-14 04:31:25,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:31:25,300 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 49 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:25,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 129 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:31:25,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-14 04:31:25,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2024-11-14 04:31:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 127 states have (on average 1.4173228346456692) internal successors, (180), 146 states have internal predecessors, (180), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-14 04:31:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2024-11-14 04:31:25,330 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 31 [2024-11-14 04:31:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:25,331 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2024-11-14 04:31:25,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:31:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2024-11-14 04:31:25,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 04:31:25,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:25,335 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:25,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 04:31:25,335 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:25,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:25,336 INFO L85 PathProgramCache]: Analyzing trace with hash 918975219, now seen corresponding path program 1 times [2024-11-14 04:31:25,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:25,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988995474] [2024-11-14 04:31:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:25,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-14 04:31:25,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:25,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988995474] [2024-11-14 04:31:25,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988995474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:31:25,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628781521] [2024-11-14 04:31:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:25,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:25,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:25,480 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:31:25,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:31:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:25,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:31:25,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:31:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-14 04:31:25,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:31:25,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628781521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:25,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:31:25,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-14 04:31:25,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307211670] [2024-11-14 04:31:25,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:25,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:31:25,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:25,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:31:25,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:31:25,601 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 04:31:25,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:25,758 INFO L93 Difference]: Finished difference Result 254 states and 347 transitions. [2024-11-14 04:31:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:31:25,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 32 [2024-11-14 04:31:25,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:25,761 INFO L225 Difference]: With dead ends: 254 [2024-11-14 04:31:25,761 INFO L226 Difference]: Without dead ends: 252 [2024-11-14 04:31:25,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:31:25,762 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 49 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:25,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 116 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-14 04:31:25,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 232. [2024-11-14 04:31:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 181 states have (on average 1.430939226519337) internal successors, (259), 199 states have internal predecessors, (259), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-14 04:31:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 321 transitions. [2024-11-14 04:31:25,804 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 321 transitions. Word has length 32 [2024-11-14 04:31:25,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:25,805 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 321 transitions. [2024-11-14 04:31:25,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 04:31:25,805 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 321 transitions. [2024-11-14 04:31:25,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 04:31:25,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:25,806 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:25,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 04:31:26,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 04:31:26,007 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:26,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash 248298920, now seen corresponding path program 1 times [2024-11-14 04:31:26,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:26,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555328425] [2024-11-14 04:31:26,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:26,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 04:31:26,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:26,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555328425] [2024-11-14 04:31:26,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555328425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:26,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:26,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:31:26,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632324212] [2024-11-14 04:31:26,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:26,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:31:26,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:26,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:31:26,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:31:26,136 INFO L87 Difference]: Start difference. First operand 232 states and 321 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:31:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:26,312 INFO L93 Difference]: Finished difference Result 237 states and 325 transitions. [2024-11-14 04:31:26,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:31:26,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-11-14 04:31:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:26,315 INFO L225 Difference]: With dead ends: 237 [2024-11-14 04:31:26,315 INFO L226 Difference]: Without dead ends: 222 [2024-11-14 04:31:26,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:31:26,317 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 19 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:26,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 90 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:26,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-14 04:31:26,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2024-11-14 04:31:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 173 states have (on average 1.4450867052023122) internal successors, (250), 191 states have internal predecessors, (250), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-14 04:31:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 308 transitions. [2024-11-14 04:31:26,343 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 308 transitions. Word has length 32 [2024-11-14 04:31:26,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:26,343 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 308 transitions. [2024-11-14 04:31:26,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:31:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 308 transitions. [2024-11-14 04:31:26,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 04:31:26,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:26,345 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 04:31:26,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 04:31:26,345 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:26,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:26,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1576539220, now seen corresponding path program 1 times [2024-11-14 04:31:26,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:26,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543952069] [2024-11-14 04:31:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:26,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-14 04:31:26,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:26,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543952069] [2024-11-14 04:31:26,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543952069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:31:26,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41428715] [2024-11-14 04:31:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:26,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:26,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:26,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:31:26,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 04:31:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:26,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:31:26,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:31:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-14 04:31:26,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:31:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-14 04:31:26,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41428715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:31:26,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1051547339] [2024-11-14 04:31:26,633 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 04:31:26,634 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:31:26,634 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:31:26,634 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:31:26,634 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:31:28,410 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-14 04:31:28,412 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:31:29,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1051547339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:29,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:31:29,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [3, 3, 3] total 17 [2024-11-14 04:31:29,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087697234] [2024-11-14 04:31:29,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:29,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 04:31:29,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 04:31:29,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:31:29,335 INFO L87 Difference]: Start difference. First operand 222 states and 308 transitions. Second operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:31:30,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:30,443 INFO L93 Difference]: Finished difference Result 233 states and 318 transitions. [2024-11-14 04:31:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:31:30,444 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-14 04:31:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:30,446 INFO L225 Difference]: With dead ends: 233 [2024-11-14 04:31:30,446 INFO L226 Difference]: Without dead ends: 221 [2024-11-14 04:31:30,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:31:30,448 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 128 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:30,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 74 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:31:30,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-14 04:31:30,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 190. [2024-11-14 04:31:30,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 148 states have (on average 1.3918918918918919) internal successors, (206), 163 states have internal predecessors, (206), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-14 04:31:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 256 transitions. [2024-11-14 04:31:30,487 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 256 transitions. Word has length 33 [2024-11-14 04:31:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:30,487 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 256 transitions. [2024-11-14 04:31:30,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:31:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 256 transitions. [2024-11-14 04:31:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 04:31:30,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:30,489 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:30,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 04:31:30,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:30,690 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:30,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:30,690 INFO L85 PathProgramCache]: Analyzing trace with hash -614957125, now seen corresponding path program 1 times [2024-11-14 04:31:30,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:30,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47570888] [2024-11-14 04:31:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:30,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-14 04:31:30,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:30,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47570888] [2024-11-14 04:31:30,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47570888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:30,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:31:30,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:31:30,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821410851] [2024-11-14 04:31:30,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:30,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:31:30,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:30,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:31:30,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:30,775 INFO L87 Difference]: Start difference. First operand 190 states and 256 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 04:31:30,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:30,910 INFO L93 Difference]: Finished difference Result 190 states and 256 transitions. [2024-11-14 04:31:30,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:30,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2024-11-14 04:31:30,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:30,917 INFO L225 Difference]: With dead ends: 190 [2024-11-14 04:31:30,917 INFO L226 Difference]: Without dead ends: 189 [2024-11-14 04:31:30,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:31:30,919 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:30,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 83 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:30,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-14 04:31:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-14 04:31:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.364864864864865) internal successors, (202), 162 states have internal predecessors, (202), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-14 04:31:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 252 transitions. [2024-11-14 04:31:30,968 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 252 transitions. Word has length 51 [2024-11-14 04:31:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:30,969 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 252 transitions. [2024-11-14 04:31:30,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 04:31:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 252 transitions. [2024-11-14 04:31:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 04:31:30,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:30,970 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:30,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 04:31:30,971 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:30,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:30,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1883801580, now seen corresponding path program 1 times [2024-11-14 04:31:30,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:30,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145876086] [2024-11-14 04:31:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:30,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-14 04:31:31,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:31,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145876086] [2024-11-14 04:31:31,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145876086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:31:31,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131822500] [2024-11-14 04:31:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:31,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:31,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:31,180 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:31:31,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 04:31:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:31,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:31:31,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:31:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-14 04:31:31,412 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:31:31,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131822500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:31,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:31:31,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-14 04:31:31,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057948174] [2024-11-14 04:31:31,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:31,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:31:31,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:31:31,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:31:31,414 INFO L87 Difference]: Start difference. First operand 189 states and 252 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 04:31:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:31,585 INFO L93 Difference]: Finished difference Result 225 states and 291 transitions. [2024-11-14 04:31:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:31:31,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2024-11-14 04:31:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:31,587 INFO L225 Difference]: With dead ends: 225 [2024-11-14 04:31:31,587 INFO L226 Difference]: Without dead ends: 224 [2024-11-14 04:31:31,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:31:31,588 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 23 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:31,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 89 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:31,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-14 04:31:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 189. [2024-11-14 04:31:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.3513513513513513) internal successors, (200), 162 states have internal predecessors, (200), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-14 04:31:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 250 transitions. [2024-11-14 04:31:31,618 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 250 transitions. Word has length 52 [2024-11-14 04:31:31,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:31,619 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 250 transitions. [2024-11-14 04:31:31,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 04:31:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 250 transitions. [2024-11-14 04:31:31,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 04:31:31,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:31,620 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:31,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 04:31:31,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-14 04:31:31,825 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:31,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1731693277, now seen corresponding path program 1 times [2024-11-14 04:31:31,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:31,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353422775] [2024-11-14 04:31:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:31,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-14 04:31:32,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:32,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353422775] [2024-11-14 04:31:32,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353422775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:31:32,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934080109] [2024-11-14 04:31:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:32,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:32,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:32,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:31:32,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 04:31:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:32,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:31:32,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:31:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-14 04:31:32,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:31:32,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934080109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:32,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:31:32,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-14 04:31:32,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632144457] [2024-11-14 04:31:32,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:32,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:31:32,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:32,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:31:32,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:31:32,425 INFO L87 Difference]: Start difference. First operand 189 states and 250 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 04:31:32,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:32,623 INFO L93 Difference]: Finished difference Result 199 states and 264 transitions. [2024-11-14 04:31:32,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:31:32,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2024-11-14 04:31:32,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:32,626 INFO L225 Difference]: With dead ends: 199 [2024-11-14 04:31:32,626 INFO L226 Difference]: Without dead ends: 198 [2024-11-14 04:31:32,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:31:32,627 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 38 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:32,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 96 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:31:32,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-14 04:31:32,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2024-11-14 04:31:32,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 154 states have (on average 1.3376623376623376) internal successors, (206), 168 states have internal predecessors, (206), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-14 04:31:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 256 transitions. [2024-11-14 04:31:32,689 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 256 transitions. Word has length 53 [2024-11-14 04:31:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:32,690 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 256 transitions. [2024-11-14 04:31:32,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 04:31:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 256 transitions. [2024-11-14 04:31:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 04:31:32,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:32,691 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:32,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 04:31:32,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-14 04:31:32,896 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:32,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:32,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2142884150, now seen corresponding path program 1 times [2024-11-14 04:31:32,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:32,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817160075] [2024-11-14 04:31:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-14 04:31:33,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:33,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817160075] [2024-11-14 04:31:33,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817160075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:31:33,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691133001] [2024-11-14 04:31:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:33,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:33,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:33,157 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:31:33,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 04:31:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:33,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:31:33,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:31:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-14 04:31:33,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:31:33,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691133001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:33,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:31:33,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-14 04:31:33,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275507202] [2024-11-14 04:31:33,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:33,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:31:33,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:33,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:31:33,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:31:33,420 INFO L87 Difference]: Start difference. First operand 195 states and 256 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 04:31:33,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:31:33,675 INFO L93 Difference]: Finished difference Result 199 states and 260 transitions. [2024-11-14 04:31:33,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:31:33,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2024-11-14 04:31:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:31:33,677 INFO L225 Difference]: With dead ends: 199 [2024-11-14 04:31:33,677 INFO L226 Difference]: Without dead ends: 198 [2024-11-14 04:31:33,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:31:33,678 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:31:33,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 83 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:31:33,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-14 04:31:33,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2024-11-14 04:31:33,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 156 states have (on average 1.3205128205128205) internal successors, (206), 170 states have internal predecessors, (206), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-14 04:31:33,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 256 transitions. [2024-11-14 04:31:33,724 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 256 transitions. Word has length 54 [2024-11-14 04:31:33,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:31:33,724 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 256 transitions. [2024-11-14 04:31:33,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 04:31:33,724 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 256 transitions. [2024-11-14 04:31:33,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 04:31:33,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:31:33,726 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:31:33,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 04:31:33,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 04:31:33,930 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:31:33,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:31:33,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2022335832, now seen corresponding path program 1 times [2024-11-14 04:31:33,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:31:33,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681571296] [2024-11-14 04:31:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:33,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:31:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:31:33,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79276076] [2024-11-14 04:31:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:31:33,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:31:33,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:31:33,976 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:31:33,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 04:31:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:31:34,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:31:34,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:31:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-14 04:31:34,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:31:35,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:31:35,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681571296] [2024-11-14 04:31:35,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:31:35,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79276076] [2024-11-14 04:31:35,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79276076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:31:35,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1534111606] [2024-11-14 04:31:35,255 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:31:35,255 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:31:35,255 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:31:35,255 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:31:35,256 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:31:38,942 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:31:38,943 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:31:48,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1534111606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:31:48,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:31:48,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [5] total 29 [2024-11-14 04:31:48,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580914603] [2024-11-14 04:31:48,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:31:48,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 04:31:48,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:31:48,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 04:31:48,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=908, Unknown=2, NotChecked=0, Total=1122 [2024-11-14 04:31:48,475 INFO L87 Difference]: Start difference. First operand 197 states and 256 transitions. Second operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:31:52,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:31:54,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:31:56,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:31:59,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:32:01,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:32:03,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:32:05,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:32:07,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:32:09,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:32:11,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:32:13,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:32:15,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:32:17,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:32:19,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:32:28,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:32:28,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:28,758 INFO L93 Difference]: Finished difference Result 220 states and 292 transitions. [2024-11-14 04:32:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-14 04:32:28,759 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2024-11-14 04:32:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:28,761 INFO L225 Difference]: With dead ends: 220 [2024-11-14 04:32:28,761 INFO L226 Difference]: Without dead ends: 212 [2024-11-14 04:32:28,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=709, Invalid=2369, Unknown=2, NotChecked=0, Total=3080 [2024-11-14 04:32:28,764 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 519 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 228 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:28,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 49 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 720 Invalid, 15 Unknown, 0 Unchecked, 33.0s Time] [2024-11-14 04:32:28,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-14 04:32:28,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 76. [2024-11-14 04:32:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 64 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 04:32:28,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2024-11-14 04:32:28,797 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 56 [2024-11-14 04:32:28,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:28,798 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2024-11-14 04:32:28,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:32:28,798 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2024-11-14 04:32:28,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-14 04:32:28,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:28,799 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:28,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 04:32:29,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-14 04:32:29,004 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:32:29,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:29,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1900590619, now seen corresponding path program 1 times [2024-11-14 04:32:29,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:29,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647917656] [2024-11-14 04:32:29,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:29,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-14 04:32:29,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:29,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647917656] [2024-11-14 04:32:29,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647917656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:32:29,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376273389] [2024-11-14 04:32:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:29,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:32:29,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:32:29,415 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:32:29,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 04:32:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:29,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 04:32:29,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:32:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-14 04:32:30,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:32:31,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376273389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:32:31,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1312368481] [2024-11-14 04:32:31,946 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:32:31,946 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:32:31,947 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:32:31,947 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:32:31,947 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:32:34,923 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:32:34,925 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:32:41,964 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8203#(exists ((|v_ULTIMATE.start_main_~B~0#1_43| Int) (|v_ULTIMATE.start_main_~r~0#1_49| Int) (|v_ULTIMATE.start_main_~q~0#1_55| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_55| |v_ULTIMATE.start_main_~r~0#1_49|)) (<= |ULTIMATE.start_main_~A~0#1| 20) (<= |v_ULTIMATE.start_main_~r~0#1_49| 2147483647) (= |v_ULTIMATE.start_main_~B~0#1_43| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |v_ULTIMATE.start_main_~r~0#1_49|)) (<= |v_ULTIMATE.start_main_~q~0#1_55| 2147483647)))' at error location [2024-11-14 04:32:41,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:32:41,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:32:41,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-14 04:32:41,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882869546] [2024-11-14 04:32:41,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:32:41,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 04:32:41,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:41,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 04:32:41,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1789, Unknown=0, NotChecked=0, Total=1980 [2024-11-14 04:32:41,966 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 16 states, 15 states have (on average 4.733333333333333) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-14 04:32:44,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:44,699 INFO L93 Difference]: Finished difference Result 309 states and 392 transitions. [2024-11-14 04:32:44,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-14 04:32:44,700 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.733333333333333) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 59 [2024-11-14 04:32:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:44,702 INFO L225 Difference]: With dead ends: 309 [2024-11-14 04:32:44,702 INFO L226 Difference]: Without dead ends: 304 [2024-11-14 04:32:44,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 93 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=408, Invalid=3374, Unknown=0, NotChecked=0, Total=3782 [2024-11-14 04:32:44,705 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 467 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:44,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 184 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 04:32:44,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-14 04:32:44,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 181. [2024-11-14 04:32:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 149 states have (on average 1.174496644295302) internal successors, (175), 156 states have internal predecessors, (175), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-14 04:32:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 221 transitions. [2024-11-14 04:32:44,781 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 221 transitions. Word has length 59 [2024-11-14 04:32:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:44,782 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 221 transitions. [2024-11-14 04:32:44,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.733333333333333) internal successors, (71), 16 states have internal predecessors, (71), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-14 04:32:44,783 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 221 transitions. [2024-11-14 04:32:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 04:32:44,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:44,784 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:44,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 04:32:44,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 04:32:44,985 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:32:44,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:44,985 INFO L85 PathProgramCache]: Analyzing trace with hash -485460006, now seen corresponding path program 1 times [2024-11-14 04:32:44,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:44,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831625015] [2024-11-14 04:32:44,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:44,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:32:45,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492511447] [2024-11-14 04:32:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:45,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:32:45,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:32:45,018 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:32:45,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 04:32:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:45,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 04:32:45,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:32:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-14 04:32:45,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:32:47,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:47,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831625015] [2024-11-14 04:32:47,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:32:47,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492511447] [2024-11-14 04:32:47,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492511447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:32:47,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1173449134] [2024-11-14 04:32:47,055 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-14 04:32:47,056 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:32:47,056 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:32:47,056 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:32:47,056 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:32:50,485 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:32:50,487 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:33:02,203 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9139#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 20) (exists ((|v_ULTIMATE.start_main_~q~0#1_61| Int) (|v_ULTIMATE.start_main_~d~0#1_97| Int)) (and (<= 0 (+ 2147483647 |v_ULTIMATE.start_main_~d~0#1_97|)) (<= |v_ULTIMATE.start_main_~q~0#1_61| 2147483647) (<= |v_ULTIMATE.start_main_~d~0#1_97| 2147483647) (<= (+ (* |v_ULTIMATE.start_main_~q~0#1_61| |v_ULTIMATE.start_main_~d~0#1_97|) 2147483649) 0) (<= 0 (+ |v_ULTIMATE.start_main_~q~0#1_61| 2147483648)))) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-14 04:33:02,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:33:02,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:33:02,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-14 04:33:02,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791054235] [2024-11-14 04:33:02,204 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:33:02,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:33:02,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:33:02,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:33:02,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1334, Unknown=2, NotChecked=0, Total=1560 [2024-11-14 04:33:02,206 INFO L87 Difference]: Start difference. First operand 181 states and 221 transitions. Second operand has 10 states, 8 states have (on average 5.125) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-14 04:33:03,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:33:03,026 INFO L93 Difference]: Finished difference Result 208 states and 244 transitions. [2024-11-14 04:33:03,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:33:03,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 69 [2024-11-14 04:33:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:33:03,029 INFO L225 Difference]: With dead ends: 208 [2024-11-14 04:33:03,029 INFO L226 Difference]: Without dead ends: 122 [2024-11-14 04:33:03,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=224, Invalid=1334, Unknown=2, NotChecked=0, Total=1560 [2024-11-14 04:33:03,031 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:33:03,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 120 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 04:33:03,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-14 04:33:03,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2024-11-14 04:33:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 100 states have internal predecessors, (105), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-14 04:33:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2024-11-14 04:33:03,077 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 69 [2024-11-14 04:33:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:33:03,077 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2024-11-14 04:33:03,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-14 04:33:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2024-11-14 04:33:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 04:33:03,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:33:03,079 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:33:03,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 04:33:03,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:33:03,279 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:33:03,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:33:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1624373500, now seen corresponding path program 1 times [2024-11-14 04:33:03,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:33:03,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055199] [2024-11-14 04:33:03,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:33:03,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:33:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:33:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-14 04:33:03,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:33:03,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055199] [2024-11-14 04:33:03,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:33:03,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:33:03,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:33:03,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772402895] [2024-11-14 04:33:03,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:33:03,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:33:03,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:33:03,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:33:03,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:33:03,495 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 04:33:04,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:33:04,323 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2024-11-14 04:33:04,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:33:04,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2024-11-14 04:33:04,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:33:04,325 INFO L225 Difference]: With dead ends: 119 [2024-11-14 04:33:04,325 INFO L226 Difference]: Without dead ends: 86 [2024-11-14 04:33:04,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:33:04,327 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:33:04,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 77 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 04:33:04,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-14 04:33:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-14 04:33:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 71 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 04:33:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2024-11-14 04:33:04,368 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 71 [2024-11-14 04:33:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:33:04,369 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2024-11-14 04:33:04,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 04:33:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2024-11-14 04:33:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 04:33:04,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:33:04,371 INFO L215 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:33:04,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-14 04:33:04,371 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:33:04,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:33:04,372 INFO L85 PathProgramCache]: Analyzing trace with hash 530533004, now seen corresponding path program 2 times [2024-11-14 04:33:04,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:33:04,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624470275] [2024-11-14 04:33:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:33:04,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:33:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:33:04,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255269369] [2024-11-14 04:33:04,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:33:04,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:33:04,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:33:04,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:33:04,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 04:33:04,489 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 04:33:04,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:33:04,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:33:04,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:33:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-14 04:33:05,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:33:20,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:33:20,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624470275] [2024-11-14 04:33:20,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:33:20,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255269369] [2024-11-14 04:33:20,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255269369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:33:20,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1616202410] [2024-11-14 04:33:20,016 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:33:20,016 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:33:20,017 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:33:20,017 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:33:20,017 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:33:22,134 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:33:22,136 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:33:49,196 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10117#(exists ((|v_ULTIMATE.start_main_~q~0#1_67| Int) (|v_ULTIMATE.start_main_~r~0#1_59| Int) (|v_ULTIMATE.start_main_~B~0#1_46| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |v_ULTIMATE.start_main_~r~0#1_59| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 20) (= |v_ULTIMATE.start_main_~B~0#1_46| 1) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_67| |v_ULTIMATE.start_main_~r~0#1_59|)) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= |v_ULTIMATE.start_main_~q~0#1_67| 2147483647)))' at error location [2024-11-14 04:33:49,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:33:49,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:33:49,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-14 04:33:49,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703577454] [2024-11-14 04:33:49,197 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:33:49,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:33:49,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:33:49,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:33:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1354, Unknown=11, NotChecked=0, Total=1722 [2024-11-14 04:33:49,199 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 10 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 04:33:49,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:33:49,891 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2024-11-14 04:33:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:33:49,893 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-14 04:33:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:33:49,900 INFO L225 Difference]: With dead ends: 123 [2024-11-14 04:33:49,900 INFO L226 Difference]: Without dead ends: 122 [2024-11-14 04:33:49,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=357, Invalid=1354, Unknown=11, NotChecked=0, Total=1722 [2024-11-14 04:33:49,902 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:33:49,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 59 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 04:33:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-14 04:33:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2024-11-14 04:33:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 71 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 04:33:49,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2024-11-14 04:33:49,976 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 76 [2024-11-14 04:33:49,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:33:49,976 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2024-11-14 04:33:49,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 04:33:49,977 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2024-11-14 04:33:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-14 04:33:49,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:33:49,978 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:33:50,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-14 04:33:50,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:33:50,183 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:33:50,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:33:50,184 INFO L85 PathProgramCache]: Analyzing trace with hash 238088971, now seen corresponding path program 2 times [2024-11-14 04:33:50,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:33:50,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601392242] [2024-11-14 04:33:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:33:50,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:33:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:33:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 04:33:50,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:33:50,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601392242] [2024-11-14 04:33:50,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601392242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:33:50,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326203053] [2024-11-14 04:33:50,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:33:50,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:33:50,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:33:50,525 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:33:50,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 04:33:50,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 04:33:50,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:33:50,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:33:50,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:33:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 04:33:50,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:33:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 04:33:51,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326203053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:33:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1891854152] [2024-11-14 04:33:51,428 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-14 04:33:51,428 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:33:51,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:33:51,431 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:33:51,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:33:54,140 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:33:54,141 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:34:03,635 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10917#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 20) (exists ((|v_ULTIMATE.start_main_~d~0#1_121| Int) (|v_ULTIMATE.start_main_~q~0#1_72| Int)) (and (<= |v_ULTIMATE.start_main_~d~0#1_121| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~q~0#1_72| 2147483648)) (<= |v_ULTIMATE.start_main_~q~0#1_72| 2147483647) (<= 0 (+ 2147483647 |v_ULTIMATE.start_main_~d~0#1_121|)) (<= (+ 2147483649 (* |v_ULTIMATE.start_main_~q~0#1_72| |v_ULTIMATE.start_main_~d~0#1_121|)) 0))) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-14 04:34:03,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:34:03,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:34:03,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2024-11-14 04:34:03,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866938920] [2024-11-14 04:34:03,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:34:03,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:34:03,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:34:03,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:34:03,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=850, Unknown=2, NotChecked=0, Total=992 [2024-11-14 04:34:03,637 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-14 04:34:03,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:03,887 INFO L93 Difference]: Finished difference Result 136 states and 158 transitions. [2024-11-14 04:34:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:34:03,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 86 [2024-11-14 04:34:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:03,889 INFO L225 Difference]: With dead ends: 136 [2024-11-14 04:34:03,889 INFO L226 Difference]: Without dead ends: 129 [2024-11-14 04:34:03,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 224 SyntacticMatches, 10 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=140, Invalid=850, Unknown=2, NotChecked=0, Total=992 [2024-11-14 04:34:03,891 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 30 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:03,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 103 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:34:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-14 04:34:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2024-11-14 04:34:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 90 states have (on average 1.1222222222222222) internal successors, (101), 96 states have internal predecessors, (101), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-14 04:34:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2024-11-14 04:34:03,932 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 86 [2024-11-14 04:34:03,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:03,932 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2024-11-14 04:34:03,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-14 04:34:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2024-11-14 04:34:03,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-14 04:34:03,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:03,934 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:03,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-14 04:34:04,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:04,135 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:34:04,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:04,135 INFO L85 PathProgramCache]: Analyzing trace with hash -804474729, now seen corresponding path program 1 times [2024-11-14 04:34:04,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:34:04,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115153225] [2024-11-14 04:34:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:04,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:34:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 04:34:04,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:34:04,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115153225] [2024-11-14 04:34:04,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115153225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:34:04,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027950224] [2024-11-14 04:34:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:04,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:04,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:34:04,703 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:34:04,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 04:34:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:04,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 04:34:04,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 04:34:05,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 04:34:08,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027950224] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:08,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [134605690] [2024-11-14 04:34:08,829 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:34:08,832 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:34:08,832 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:34:08,833 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:34:08,833 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:34:11,533 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:34:11,535 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:34:45,184 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11822#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~A~0#1| 20) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-14 04:34:45,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:34:45,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:34:45,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6] total 24 [2024-11-14 04:34:45,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711263116] [2024-11-14 04:34:45,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:34:45,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 04:34:45,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:34:45,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 04:34:45,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=2113, Unknown=12, NotChecked=0, Total=2450 [2024-11-14 04:34:45,188 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 25 states have internal predecessors, (160), 13 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) [2024-11-14 04:34:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:50,014 INFO L93 Difference]: Finished difference Result 384 states and 467 transitions. [2024-11-14 04:34:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-14 04:34:50,015 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 25 states have internal predecessors, (160), 13 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) Word has length 92 [2024-11-14 04:34:50,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:50,018 INFO L225 Difference]: With dead ends: 384 [2024-11-14 04:34:50,018 INFO L226 Difference]: Without dead ends: 383 [2024-11-14 04:34:50,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 229 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886 ImplicationChecksByTransitivity, 36.8s TimeCoverageRelationStatistics Valid=718, Invalid=4100, Unknown=12, NotChecked=0, Total=4830 [2024-11-14 04:34:50,021 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 614 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:50,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 588 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-14 04:34:50,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-14 04:34:50,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 215. [2024-11-14 04:34:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 177 states have (on average 1.11864406779661) internal successors, (198), 183 states have internal predecessors, (198), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-14 04:34:50,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 258 transitions. [2024-11-14 04:34:50,102 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 258 transitions. Word has length 92 [2024-11-14 04:34:50,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:50,103 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 258 transitions. [2024-11-14 04:34:50,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 25 states have internal predecessors, (160), 13 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 13 states have call predecessors, (39), 13 states have call successors, (39) [2024-11-14 04:34:50,103 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 258 transitions. [2024-11-14 04:34:50,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-14 04:34:50,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:50,107 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 04:34:50,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 04:34:50,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:50,312 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:34:50,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:50,314 INFO L85 PathProgramCache]: Analyzing trace with hash 831087290, now seen corresponding path program 1 times [2024-11-14 04:34:50,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:34:50,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323537507] [2024-11-14 04:34:50,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:50,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:34:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-11-14 04:34:50,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:34:50,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323537507] [2024-11-14 04:34:50,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323537507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:34:50,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825143726] [2024-11-14 04:34:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:50,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:50,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:34:50,826 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:34:50,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 04:34:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:50,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:34:50,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 25 proven. 18 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 04:34:51,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 04:34:57,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825143726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:57,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [653003096] [2024-11-14 04:34:57,288 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:34:57,288 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:34:57,288 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:34:57,289 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:34:57,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:35:00,058 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:35:00,060 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:35:34,974 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13175#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 20) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-14 04:35:34,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:35:34,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:35:34,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 20 [2024-11-14 04:35:34,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746588589] [2024-11-14 04:35:34,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:35:34,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 04:35:34,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:35:34,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 04:35:34,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1676, Unknown=12, NotChecked=0, Total=2070 [2024-11-14 04:35:34,976 INFO L87 Difference]: Start difference. First operand 215 states and 258 transitions. Second operand has 21 states, 20 states have (on average 7.85) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-14 04:35:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:35:35,953 INFO L93 Difference]: Finished difference Result 304 states and 369 transitions. [2024-11-14 04:35:35,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:35:35,954 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 7.85) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) Word has length 93 [2024-11-14 04:35:35,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:35:35,958 INFO L225 Difference]: With dead ends: 304 [2024-11-14 04:35:35,958 INFO L226 Difference]: Without dead ends: 303 [2024-11-14 04:35:35,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 236 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 35.9s TimeCoverageRelationStatistics Valid=455, Invalid=1983, Unknown=12, NotChecked=0, Total=2450 [2024-11-14 04:35:35,963 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 244 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:35:35,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 253 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:35:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-14 04:35:36,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 214. [2024-11-14 04:35:36,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 177 states have (on average 1.1073446327683616) internal successors, (196), 182 states have internal predecessors, (196), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-14 04:35:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2024-11-14 04:35:36,055 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 93 [2024-11-14 04:35:36,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:35:36,058 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2024-11-14 04:35:36,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 7.85) internal successors, (157), 21 states have internal predecessors, (157), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-14 04:35:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2024-11-14 04:35:36,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-14 04:35:36,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:35:36,061 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-14 04:35:36,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 04:35:36,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-14 04:35:36,262 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:35:36,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:35:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash -6097671, now seen corresponding path program 1 times [2024-11-14 04:35:36,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:35:36,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409105553] [2024-11-14 04:35:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:35:36,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:35:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:35:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 04:35:36,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:35:36,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409105553] [2024-11-14 04:35:36,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409105553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:35:36,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736483425] [2024-11-14 04:35:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:35:36,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:35:36,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:35:36,881 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:35:36,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 04:35:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:35:36,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:35:36,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:35:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 04:35:37,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:35:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 04:35:40,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736483425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:35:40,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [260162316] [2024-11-14 04:35:40,163 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:35:40,163 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:35:40,164 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:35:40,164 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:35:40,164 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:35:44,388 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:35:44,389 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:36:30,398 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14417#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-14 04:36:30,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:36:30,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:36:30,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2024-11-14 04:36:30,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777444956] [2024-11-14 04:36:30,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:36:30,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 04:36:30,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:36:30,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 04:36:30,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=1840, Unknown=20, NotChecked=0, Total=2256 [2024-11-14 04:36:30,400 INFO L87 Difference]: Start difference. First operand 214 states and 256 transitions. Second operand has 23 states, 22 states have (on average 7.545454545454546) internal successors, (166), 23 states have internal predecessors, (166), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-11-14 04:36:33,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:36:33,238 INFO L93 Difference]: Finished difference Result 622 states and 750 transitions. [2024-11-14 04:36:33,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-14 04:36:33,239 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.545454545454546) internal successors, (166), 23 states have internal predecessors, (166), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) Word has length 94 [2024-11-14 04:36:33,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:36:33,242 INFO L225 Difference]: With dead ends: 622 [2024-11-14 04:36:33,242 INFO L226 Difference]: Without dead ends: 558 [2024-11-14 04:36:33,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 240 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1788 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=723, Invalid=3039, Unknown=20, NotChecked=0, Total=3782 [2024-11-14 04:36:33,245 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 390 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:36:33,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 483 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 04:36:33,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-14 04:36:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 429. [2024-11-14 04:36:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 363 states have (on average 1.1101928374655647) internal successors, (403), 368 states have internal predecessors, (403), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-14 04:36:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 521 transitions. [2024-11-14 04:36:33,393 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 521 transitions. Word has length 94 [2024-11-14 04:36:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:36:33,394 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 521 transitions. [2024-11-14 04:36:33,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.545454545454546) internal successors, (166), 23 states have internal predecessors, (166), 12 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-11-14 04:36:33,394 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 521 transitions. [2024-11-14 04:36:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-14 04:36:33,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:36:33,400 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-14 04:36:33,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 04:36:33,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-14 04:36:33,601 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:36:33,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:36:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2124516296, now seen corresponding path program 3 times [2024-11-14 04:36:33,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:36:33,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577445902] [2024-11-14 04:36:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:36:33,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:36:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:36:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-14 04:36:34,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:36:34,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577445902] [2024-11-14 04:36:34,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577445902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:36:34,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258642653] [2024-11-14 04:36:34,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:36:34,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:36:34,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:36:34,345 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:36:34,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 04:36:34,512 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:36:34,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:36:34,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-14 04:36:34,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:36:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-14 04:36:36,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:36:40,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258642653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:36:40,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1327288766] [2024-11-14 04:36:40,594 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:36:40,594 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:36:40,594 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:36:40,594 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:36:40,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:36:42,822 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:36:42,824 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:36:56,572 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16107#(exists ((|v_ULTIMATE.start_main_~q~0#1_96| Int) (|v_ULTIMATE.start_main_~r~0#1_87| Int) (|v_ULTIMATE.start_main_~B~0#1_47| Int)) (and (<= 1 |#StackHeapBarrier|) (= |v_ULTIMATE.start_main_~B~0#1_47| 1) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |v_ULTIMATE.start_main_~r~0#1_87|)) (<= |ULTIMATE.start_main_~A~0#1| 20) (<= |v_ULTIMATE.start_main_~q~0#1_96| 2147483647) (<= |v_ULTIMATE.start_main_~r~0#1_87| 2147483647) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_96| |v_ULTIMATE.start_main_~r~0#1_87|)) (<= 0 |ULTIMATE.start_main_~A~0#1|)))' at error location [2024-11-14 04:36:56,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:36:56,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:36:56,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 23 [2024-11-14 04:36:56,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41883014] [2024-11-14 04:36:56,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:36:56,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 04:36:56,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:36:56,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 04:36:56,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2427, Unknown=3, NotChecked=0, Total=2652 [2024-11-14 04:36:56,577 INFO L87 Difference]: Start difference. First operand 429 states and 521 transitions. Second operand has 24 states, 22 states have (on average 5.545454545454546) internal successors, (122), 24 states have internal predecessors, (122), 11 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-14 04:37:01,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:37:01,116 INFO L93 Difference]: Finished difference Result 648 states and 797 transitions. [2024-11-14 04:37:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-14 04:37:01,117 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.545454545454546) internal successors, (122), 24 states have internal predecessors, (122), 11 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) Word has length 99 [2024-11-14 04:37:01,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:37:01,121 INFO L225 Difference]: With dead ends: 648 [2024-11-14 04:37:01,122 INFO L226 Difference]: Without dead ends: 644 [2024-11-14 04:37:01,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 166 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=423, Invalid=4686, Unknown=3, NotChecked=0, Total=5112 [2024-11-14 04:37:01,125 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 275 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:37:01,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 397 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-14 04:37:01,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-11-14 04:37:01,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 552. [2024-11-14 04:37:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 472 states have (on average 1.1165254237288136) internal successors, (527), 477 states have internal predecessors, (527), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-14 04:37:01,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 673 transitions. [2024-11-14 04:37:01,283 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 673 transitions. Word has length 99 [2024-11-14 04:37:01,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:37:01,284 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 673 transitions. [2024-11-14 04:37:01,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.545454545454546) internal successors, (122), 24 states have internal predecessors, (122), 11 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2024-11-14 04:37:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 673 transitions. [2024-11-14 04:37:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-14 04:37:01,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:37:01,287 INFO L215 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:37:01,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-14 04:37:01,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-14 04:37:01,491 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:37:01,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:37:01,491 INFO L85 PathProgramCache]: Analyzing trace with hash -16241027, now seen corresponding path program 1 times [2024-11-14 04:37:01,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:37:01,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676673144] [2024-11-14 04:37:01,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:37:01,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:37:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:37:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 34 proven. 16 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-14 04:37:01,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:37:01,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676673144] [2024-11-14 04:37:01,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676673144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:37:01,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799887227] [2024-11-14 04:37:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:37:01,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:37:01,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:37:01,881 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:37:01,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-14 04:37:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:37:01,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:37:01,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:37:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-14 04:37:02,733 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:37:02,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799887227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:37:02,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:37:02,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-11-14 04:37:02,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26797896] [2024-11-14 04:37:02,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:37:02,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:37:02,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:37:02,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:37:02,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:37:02,735 INFO L87 Difference]: Start difference. First operand 552 states and 673 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-14 04:37:03,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:37:03,318 INFO L93 Difference]: Finished difference Result 650 states and 787 transitions. [2024-11-14 04:37:03,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:37:03,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 105 [2024-11-14 04:37:03,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:37:03,322 INFO L225 Difference]: With dead ends: 650 [2024-11-14 04:37:03,322 INFO L226 Difference]: Without dead ends: 463 [2024-11-14 04:37:03,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:37:03,324 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 63 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:37:03,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 168 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:37:03,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-14 04:37:03,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 407. [2024-11-14 04:37:03,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 343 states have (on average 1.119533527696793) internal successors, (384), 348 states have internal predecessors, (384), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-14 04:37:03,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 498 transitions. [2024-11-14 04:37:03,515 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 498 transitions. Word has length 105 [2024-11-14 04:37:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:37:03,515 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 498 transitions. [2024-11-14 04:37:03,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-14 04:37:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 498 transitions. [2024-11-14 04:37:03,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-14 04:37:03,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:37:03,519 INFO L215 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:37:03,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-14 04:37:03,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-14 04:37:03,720 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:37:03,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:37:03,721 INFO L85 PathProgramCache]: Analyzing trace with hash 922802609, now seen corresponding path program 2 times [2024-11-14 04:37:03,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:37:03,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630633871] [2024-11-14 04:37:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:37:03,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:37:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:37:03,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063648535] [2024-11-14 04:37:03,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:37:03,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:37:03,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:37:03,764 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:37:03,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 04:37:03,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 04:37:03,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:37:03,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 04:37:03,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:37:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 45 proven. 26 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-14 04:37:04,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:37:05,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:37:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630633871] [2024-11-14 04:37:05,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:37:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063648535] [2024-11-14 04:37:05,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063648535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:37:05,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1927143939] [2024-11-14 04:37:05,101 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-14 04:37:05,101 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:37:05,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:37:05,102 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:37:05,102 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:37:10,572 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:37:10,574 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:37:16,164 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19549#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)) (exists ((|v_ULTIMATE.start_main_~d~0#1_198| Int) (|v_ULTIMATE.start_main_~q~0#1_103| Int)) (and (<= (+ 2147483649 (* |v_ULTIMATE.start_main_~q~0#1_103| |v_ULTIMATE.start_main_~d~0#1_198|)) 0) (<= 0 (+ |v_ULTIMATE.start_main_~q~0#1_103| 2147483648)) (<= |v_ULTIMATE.start_main_~q~0#1_103| 2147483647))))' at error location [2024-11-14 04:37:16,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:37:16,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:37:16,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-14 04:37:16,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780960799] [2024-11-14 04:37:16,165 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:37:16,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:37:16,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:37:16,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:37:16,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1155, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 04:37:16,166 INFO L87 Difference]: Start difference. First operand 407 states and 498 transitions. Second operand has 10 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-14 04:37:17,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:37:17,393 INFO L93 Difference]: Finished difference Result 423 states and 519 transitions. [2024-11-14 04:37:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:37:17,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 105 [2024-11-14 04:37:17,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:37:17,396 INFO L225 Difference]: With dead ends: 423 [2024-11-14 04:37:17,397 INFO L226 Difference]: Without dead ends: 422 [2024-11-14 04:37:17,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 176 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=410, Invalid=1752, Unknown=0, NotChecked=0, Total=2162 [2024-11-14 04:37:17,399 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 82 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:37:17,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 154 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:37:17,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-14 04:37:17,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 414. [2024-11-14 04:37:17,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 348 states have (on average 1.1206896551724137) internal successors, (390), 353 states have internal predecessors, (390), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-14 04:37:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 508 transitions. [2024-11-14 04:37:17,527 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 508 transitions. Word has length 105 [2024-11-14 04:37:17,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:37:17,528 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 508 transitions. [2024-11-14 04:37:17,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-14 04:37:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 508 transitions. [2024-11-14 04:37:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-14 04:37:17,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:37:17,530 INFO L215 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:37:17,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-14 04:37:17,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-14 04:37:17,735 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:37:17,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:37:17,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1457890068, now seen corresponding path program 1 times [2024-11-14 04:37:17,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:37:17,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136822128] [2024-11-14 04:37:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:37:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:37:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:37:17,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920170781] [2024-11-14 04:37:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:37:17,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:37:17,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:37:17,770 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:37:17,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 04:37:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:37:17,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-14 04:37:17,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:37:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-14 04:37:19,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:37:22,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:37:22,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136822128] [2024-11-14 04:37:22,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:37:22,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920170781] [2024-11-14 04:37:22,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920170781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:37:22,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1253851055] [2024-11-14 04:37:22,310 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-14 04:37:22,310 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:37:22,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:37:22,311 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:37:22,311 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:37:24,609 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 04:37:24,733 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 04:37:28,467 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:37:28,468 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:37:35,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1253851055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:37:35,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:37:35,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [14] total 40 [2024-11-14 04:37:35,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800166036] [2024-11-14 04:37:35,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:37:35,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-14 04:37:35,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:37:35,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-14 04:37:35,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1688, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 04:37:35,571 INFO L87 Difference]: Start difference. First operand 414 states and 508 transitions. Second operand has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:37:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:37:39,192 INFO L93 Difference]: Finished difference Result 415 states and 509 transitions. [2024-11-14 04:37:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-14 04:37:39,193 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 106 [2024-11-14 04:37:39,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:37:39,194 INFO L225 Difference]: With dead ends: 415 [2024-11-14 04:37:39,194 INFO L226 Difference]: Without dead ends: 404 [2024-11-14 04:37:39,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=726, Invalid=2696, Unknown=0, NotChecked=0, Total=3422 [2024-11-14 04:37:39,196 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 192 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:37:39,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 104 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 04:37:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-14 04:37:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 383. [2024-11-14 04:37:39,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 326 states have (on average 1.0797546012269938) internal successors, (352), 328 states have internal predecessors, (352), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-14 04:37:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 458 transitions. [2024-11-14 04:37:39,317 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 458 transitions. Word has length 106 [2024-11-14 04:37:39,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:37:39,318 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 458 transitions. [2024-11-14 04:37:39,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:37:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 458 transitions. [2024-11-14 04:37:39,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-14 04:37:39,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:37:39,321 INFO L215 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-14 04:37:39,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-14 04:37:39,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:37:39,525 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:37:39,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:37:39,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1296303017, now seen corresponding path program 4 times [2024-11-14 04:37:39,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:37:39,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002005149] [2024-11-14 04:37:39,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:37:39,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:37:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:37:39,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893130469] [2024-11-14 04:37:39,580 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 04:37:39,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:37:39,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:37:39,582 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:37:39,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 04:37:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:37:39,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-14 04:37:39,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:37:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-14 04:37:41,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:37:43,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:37:43,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002005149] [2024-11-14 04:37:43,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:37:43,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893130469] [2024-11-14 04:37:43,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893130469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:37:43,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [899084959] [2024-11-14 04:37:43,710 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:37:43,711 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:37:43,711 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:37:43,711 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:37:43,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:37:49,292 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:37:49,294 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:38:37,119 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22025#true' at error location [2024-11-14 04:38:37,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:38:37,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:38:37,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-14 04:38:37,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999917482] [2024-11-14 04:38:37,120 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:38:37,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 04:38:37,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:38:37,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 04:38:37,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1933, Unknown=20, NotChecked=0, Total=2256 [2024-11-14 04:38:37,122 INFO L87 Difference]: Start difference. First operand 383 states and 458 transitions. Second operand has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-14 04:38:40,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:38:40,312 INFO L93 Difference]: Finished difference Result 468 states and 557 transitions. [2024-11-14 04:38:40,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 04:38:40,313 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 116 [2024-11-14 04:38:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:38:40,316 INFO L225 Difference]: With dead ends: 468 [2024-11-14 04:38:40,316 INFO L226 Difference]: Without dead ends: 467 [2024-11-14 04:38:40,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=325, Invalid=2105, Unknown=20, NotChecked=0, Total=2450 [2024-11-14 04:38:40,321 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 52 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:38:40,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 440 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-14 04:38:40,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-14 04:38:40,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 417. [2024-11-14 04:38:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 356 states have (on average 1.0758426966292134) internal successors, (383), 358 states have internal predecessors, (383), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-14 04:38:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 497 transitions. [2024-11-14 04:38:40,520 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 497 transitions. Word has length 116 [2024-11-14 04:38:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:38:40,521 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 497 transitions. [2024-11-14 04:38:40,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-14 04:38:40,522 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 497 transitions. [2024-11-14 04:38:40,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-14 04:38:40,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:38:40,526 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:38:40,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-14 04:38:40,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:38:40,731 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:38:40,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:38:40,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1660981074, now seen corresponding path program 1 times [2024-11-14 04:38:40,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:38:40,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641924606] [2024-11-14 04:38:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:38:40,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:38:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:38:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-14 04:38:41,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:38:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641924606] [2024-11-14 04:38:41,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641924606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:38:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565517741] [2024-11-14 04:38:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:38:41,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:38:41,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:38:41,481 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:38:41,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 04:38:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:38:41,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 04:38:41,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:38:43,532 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 69 proven. 32 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-14 04:38:43,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:38:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 17 proven. 84 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-14 04:38:45,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565517741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:38:45,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [831116818] [2024-11-14 04:38:45,342 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:38:45,342 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:38:45,342 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:38:45,342 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:38:45,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:38:51,598 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:38:51,601 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:39:00,025 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23536#true' at error location [2024-11-14 04:39:00,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:39:00,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:39:00,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 27 [2024-11-14 04:39:00,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258337791] [2024-11-14 04:39:00,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:39:00,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-14 04:39:00,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:00,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-14 04:39:00,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=2358, Unknown=0, NotChecked=0, Total=2756 [2024-11-14 04:39:00,029 INFO L87 Difference]: Start difference. First operand 417 states and 497 transitions. Second operand has 28 states, 27 states have (on average 8.25925925925926) internal successors, (223), 28 states have internal predecessors, (223), 19 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 19 states have call predecessors, (54), 19 states have call successors, (54) [2024-11-14 04:39:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:04,828 INFO L93 Difference]: Finished difference Result 814 states and 975 transitions. [2024-11-14 04:39:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-14 04:39:04,828 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 8.25925925925926) internal successors, (223), 28 states have internal predecessors, (223), 19 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 19 states have call predecessors, (54), 19 states have call successors, (54) Word has length 128 [2024-11-14 04:39:04,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:04,831 INFO L225 Difference]: With dead ends: 814 [2024-11-14 04:39:04,831 INFO L226 Difference]: Without dead ends: 813 [2024-11-14 04:39:04,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 336 SyntacticMatches, 7 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3084 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1383, Invalid=6989, Unknown=0, NotChecked=0, Total=8372 [2024-11-14 04:39:04,834 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 1086 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:04,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 1278 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-14 04:39:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-14 04:39:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 361. [2024-11-14 04:39:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 307 states have (on average 1.0684039087947883) internal successors, (328), 308 states have internal predecessors, (328), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-14 04:39:04,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 430 transitions. [2024-11-14 04:39:04,954 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 430 transitions. Word has length 128 [2024-11-14 04:39:04,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:04,955 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 430 transitions. [2024-11-14 04:39:04,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 8.25925925925926) internal successors, (223), 28 states have internal predecessors, (223), 19 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 19 states have call predecessors, (54), 19 states have call successors, (54) [2024-11-14 04:39:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 430 transitions. [2024-11-14 04:39:04,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-14 04:39:04,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:04,957 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 04:39:04,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-14 04:39:05,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-14 04:39:05,158 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:39:05,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:05,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1525025616, now seen corresponding path program 1 times [2024-11-14 04:39:05,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:05,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276626359] [2024-11-14 04:39:05,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:05,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-14 04:39:05,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:05,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276626359] [2024-11-14 04:39:05,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276626359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:39:05,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095232853] [2024-11-14 04:39:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:05,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:39:05,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:39:05,986 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:39:05,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-14 04:39:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:39:06,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 04:39:06,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:39:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-14 04:39:07,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:39:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-14 04:39:15,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095232853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:39:15,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1138688267] [2024-11-14 04:39:15,219 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:39:15,219 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:39:15,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:39:15,220 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:39:15,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:39:17,040 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 04:39:17,125 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 04:39:20,184 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:39:20,185 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:39:26,892 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26639#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-14 04:39:26,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:39:26,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:39:26,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 8] total 30 [2024-11-14 04:39:26,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293489356] [2024-11-14 04:39:26,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:39:26,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-14 04:39:26,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:39:26,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-14 04:39:26,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=2550, Unknown=0, NotChecked=0, Total=3080 [2024-11-14 04:39:26,895 INFO L87 Difference]: Start difference. First operand 361 states and 430 transitions. Second operand has 31 states, 30 states have (on average 7.633333333333334) internal successors, (229), 31 states have internal predecessors, (229), 18 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 18 states have call predecessors, (54), 18 states have call successors, (54) [2024-11-14 04:39:35,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:39:35,702 INFO L93 Difference]: Finished difference Result 840 states and 997 transitions. [2024-11-14 04:39:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-14 04:39:35,703 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 7.633333333333334) internal successors, (229), 31 states have internal predecessors, (229), 18 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 18 states have call predecessors, (54), 18 states have call successors, (54) Word has length 130 [2024-11-14 04:39:35,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:39:35,705 INFO L225 Difference]: With dead ends: 840 [2024-11-14 04:39:35,705 INFO L226 Difference]: Without dead ends: 839 [2024-11-14 04:39:35,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 341 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3024 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=1358, Invalid=5122, Unknown=0, NotChecked=0, Total=6480 [2024-11-14 04:39:35,707 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 645 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:39:35,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 766 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-14 04:39:35,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2024-11-14 04:39:35,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 593. [2024-11-14 04:39:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 509 states have (on average 1.068762278978389) internal successors, (544), 510 states have internal predecessors, (544), 81 states have call successors, (81), 1 states have call predecessors, (81), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-14 04:39:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 706 transitions. [2024-11-14 04:39:35,936 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 706 transitions. Word has length 130 [2024-11-14 04:39:35,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:39:35,936 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 706 transitions. [2024-11-14 04:39:35,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 7.633333333333334) internal successors, (229), 31 states have internal predecessors, (229), 18 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 18 states have call predecessors, (54), 18 states have call successors, (54) [2024-11-14 04:39:35,937 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 706 transitions. [2024-11-14 04:39:35,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-14 04:39:35,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:39:35,938 INFO L215 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-14 04:39:35,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-14 04:39:36,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-14 04:39:36,139 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:39:36,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:39:36,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1773347928, now seen corresponding path program 5 times [2024-11-14 04:39:36,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:39:36,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772029945] [2024-11-14 04:39:36,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:39:36,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:39:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:39:36,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694981195] [2024-11-14 04:39:36,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:39:36,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:39:36,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:39:36,172 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:39:36,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 04:39:36,246 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 04:39:36,246 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:39:36,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 04:39:36,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:39:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2024-11-14 04:39:39,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:39:45,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:39:45,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772029945] [2024-11-14 04:39:45,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:39:45,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694981195] [2024-11-14 04:39:45,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694981195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:39:45,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [786974426] [2024-11-14 04:39:45,103 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:39:45,103 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:39:45,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:39:45,104 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:39:45,104 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:39:50,248 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:39:50,249 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:40:43,986 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28436#true' at error location [2024-11-14 04:40:43,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:40:43,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:40:43,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-14 04:40:43,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693267205] [2024-11-14 04:40:43,986 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:40:43,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 04:40:43,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:40:43,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 04:40:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1480, Unknown=14, NotChecked=0, Total=1806 [2024-11-14 04:40:43,987 INFO L87 Difference]: Start difference. First operand 593 states and 706 transitions. Second operand has 12 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 04:40:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:40:45,503 INFO L93 Difference]: Finished difference Result 810 states and 964 transitions. [2024-11-14 04:40:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:40:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 133 [2024-11-14 04:40:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:40:45,509 INFO L225 Difference]: With dead ends: 810 [2024-11-14 04:40:45,510 INFO L226 Difference]: Without dead ends: 809 [2024-11-14 04:40:45,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 58.1s TimeCoverageRelationStatistics Valid=312, Invalid=1480, Unknown=14, NotChecked=0, Total=1806 [2024-11-14 04:40:45,512 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:40:45,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 141 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 04:40:45,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2024-11-14 04:40:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 636. [2024-11-14 04:40:45,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 546 states have (on average 1.0714285714285714) internal successors, (585), 547 states have internal predecessors, (585), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-14 04:40:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 759 transitions. [2024-11-14 04:40:45,924 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 759 transitions. Word has length 133 [2024-11-14 04:40:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:40:45,925 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 759 transitions. [2024-11-14 04:40:45,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 04:40:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 759 transitions. [2024-11-14 04:40:45,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-14 04:40:45,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:40:45,927 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-14 04:40:45,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-14 04:40:46,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-14 04:40:46,132 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:40:46,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:40:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash -686900159, now seen corresponding path program 1 times [2024-11-14 04:40:46,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:40:46,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919360693] [2024-11-14 04:40:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:40:46,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:40:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:40:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-14 04:40:46,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:40:46,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919360693] [2024-11-14 04:40:46,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919360693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:40:46,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880420489] [2024-11-14 04:40:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:40:46,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:40:46,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:40:46,873 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:40:46,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-14 04:40:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:40:46,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 04:40:46,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:40:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-14 04:40:48,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:40:51,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880420489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:40:51,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [921354519] [2024-11-14 04:40:51,146 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:40:51,146 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:40:51,146 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:40:51,146 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:40:51,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:40:56,251 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:40:56,253 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:41:05,039 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30665#true' at error location [2024-11-14 04:41:05,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:41:05,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:41:05,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2024-11-14 04:41:05,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117956129] [2024-11-14 04:41:05,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:41:05,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 04:41:05,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:05,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 04:41:05,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=2427, Unknown=1, NotChecked=0, Total=2756 [2024-11-14 04:41:05,042 INFO L87 Difference]: Start difference. First operand 636 states and 759 transitions. Second operand has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-14 04:41:09,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:41:09,464 INFO L93 Difference]: Finished difference Result 1177 states and 1396 transitions. [2024-11-14 04:41:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-14 04:41:09,465 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) Word has length 135 [2024-11-14 04:41:09,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:41:09,474 INFO L225 Difference]: With dead ends: 1177 [2024-11-14 04:41:09,475 INFO L226 Difference]: Without dead ends: 1176 [2024-11-14 04:41:09,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 241 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2326 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=705, Invalid=5456, Unknown=1, NotChecked=0, Total=6162 [2024-11-14 04:41:09,484 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 422 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:41:09,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 826 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-14 04:41:09,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-14 04:41:09,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 581. [2024-11-14 04:41:09,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 499 states have (on average 1.0721442885771544) internal successors, (535), 500 states have internal predecessors, (535), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-14 04:41:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 693 transitions. [2024-11-14 04:41:09,785 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 693 transitions. Word has length 135 [2024-11-14 04:41:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:41:09,785 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 693 transitions. [2024-11-14 04:41:09,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.791666666666667) internal successors, (163), 25 states have internal predecessors, (163), 11 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2024-11-14 04:41:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 693 transitions. [2024-11-14 04:41:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-14 04:41:09,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:41:09,787 INFO L215 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-14 04:41:09,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-14 04:41:09,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-14 04:41:09,988 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:41:09,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:41:09,988 INFO L85 PathProgramCache]: Analyzing trace with hash -408499589, now seen corresponding path program 6 times [2024-11-14 04:41:09,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:41:09,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622862321] [2024-11-14 04:41:09,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:09,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:41:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-14 04:41:10,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:41:10,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622862321] [2024-11-14 04:41:10,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622862321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:41:10,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838852729] [2024-11-14 04:41:10,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:41:10,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:41:10,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:41:10,836 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:41:10,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-14 04:41:10,949 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:41:10,950 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:41:10,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-14 04:41:10,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:41:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 31 proven. 127 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-14 04:41:13,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:41:18,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838852729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:41:18,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2096059784] [2024-11-14 04:41:18,339 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:41:18,339 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:41:18,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:41:18,340 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:41:18,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:41:20,532 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:41:20,534 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:41:31,254 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33822#(exists ((|v_ULTIMATE.start_main_~q~0#1_152| Int) (|v_ULTIMATE.start_main_~r~0#1_143| Int) (|v_ULTIMATE.start_main_~B~0#1_59| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |v_ULTIMATE.start_main_~r~0#1_143|)) (<= |ULTIMATE.start_main_~A~0#1| 20) (<= 2147483648 (+ |v_ULTIMATE.start_main_~q~0#1_152| |v_ULTIMATE.start_main_~r~0#1_143|)) (= |v_ULTIMATE.start_main_~B~0#1_59| 1) (<= |v_ULTIMATE.start_main_~r~0#1_143| 2147483647) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= |v_ULTIMATE.start_main_~q~0#1_152| 2147483647)))' at error location [2024-11-14 04:41:31,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:41:31,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:41:31,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 32 [2024-11-14 04:41:31,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962586816] [2024-11-14 04:41:31,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:41:31,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-14 04:41:31,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:31,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-14 04:41:31,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=3481, Unknown=3, NotChecked=0, Total=3782 [2024-11-14 04:41:31,257 INFO L87 Difference]: Start difference. First operand 581 states and 693 transitions. Second operand has 33 states, 31 states have (on average 5.548387096774194) internal successors, (172), 33 states have internal predecessors, (172), 14 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) [2024-11-14 04:41:36,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:41:36,498 INFO L93 Difference]: Finished difference Result 888 states and 1051 transitions. [2024-11-14 04:41:36,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-14 04:41:36,499 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 5.548387096774194) internal successors, (172), 33 states have internal predecessors, (172), 14 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) Word has length 139 [2024-11-14 04:41:36,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:41:36,502 INFO L225 Difference]: With dead ends: 888 [2024-11-14 04:41:36,502 INFO L226 Difference]: Without dead ends: 887 [2024-11-14 04:41:36,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 236 SyntacticMatches, 13 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3412 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=641, Invalid=7366, Unknown=3, NotChecked=0, Total=8010 [2024-11-14 04:41:36,505 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 322 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:41:36,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 693 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-14 04:41:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-14 04:41:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 619. [2024-11-14 04:41:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 533 states have (on average 1.0712945590994372) internal successors, (571), 534 states have internal predecessors, (571), 83 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2024-11-14 04:41:36,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 737 transitions. [2024-11-14 04:41:36,801 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 737 transitions. Word has length 139 [2024-11-14 04:41:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:41:36,802 INFO L471 AbstractCegarLoop]: Abstraction has 619 states and 737 transitions. [2024-11-14 04:41:36,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 5.548387096774194) internal successors, (172), 33 states have internal predecessors, (172), 14 states have call successors, (36), 1 states have call predecessors, (36), 2 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) [2024-11-14 04:41:36,803 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 737 transitions. [2024-11-14 04:41:36,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-14 04:41:36,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:41:36,805 INFO L215 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-14 04:41:36,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-14 04:41:37,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-14 04:41:37,006 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:41:37,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:41:37,006 INFO L85 PathProgramCache]: Analyzing trace with hash -573229902, now seen corresponding path program 2 times [2024-11-14 04:41:37,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:41:37,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466379395] [2024-11-14 04:41:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:37,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:41:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 3 proven. 144 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-14 04:41:38,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:41:38,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466379395] [2024-11-14 04:41:38,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466379395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:41:38,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474497669] [2024-11-14 04:41:38,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:41:38,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:41:38,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:41:38,043 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:41:38,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-14 04:41:38,129 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 04:41:38,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:41:38,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 04:41:38,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:41:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-14 04:41:39,277 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:41:39,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474497669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:41:39,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:41:39,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 24 [2024-11-14 04:41:39,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408412462] [2024-11-14 04:41:39,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:41:39,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:41:39,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:41:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:41:39,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-11-14 04:41:39,279 INFO L87 Difference]: Start difference. First operand 619 states and 737 transitions. Second operand has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 04:41:40,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:41:40,171 INFO L93 Difference]: Finished difference Result 629 states and 749 transitions. [2024-11-14 04:41:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:41:40,172 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 141 [2024-11-14 04:41:40,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:41:40,174 INFO L225 Difference]: With dead ends: 629 [2024-11-14 04:41:40,175 INFO L226 Difference]: Without dead ends: 628 [2024-11-14 04:41:40,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-11-14 04:41:40,176 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 55 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:41:40,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 28 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:41:40,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-11-14 04:41:40,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 318. [2024-11-14 04:41:40,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 263 states have (on average 1.064638783269962) internal successors, (280), 263 states have internal predecessors, (280), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-14 04:41:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2024-11-14 04:41:40,379 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 141 [2024-11-14 04:41:40,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:41:40,379 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2024-11-14 04:41:40,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 04:41:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2024-11-14 04:41:40,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-14 04:41:40,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:41:40,383 INFO L215 NwaCegarLoop]: trace histogram [21, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1] [2024-11-14 04:41:40,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-14 04:41:40,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-14 04:41:40,584 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:41:40,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:41:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1536717765, now seen corresponding path program 2 times [2024-11-14 04:41:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:41:40,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707900005] [2024-11-14 04:41:40,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:41:40,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:41:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:41:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 0 proven. 151 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-14 04:41:41,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:41:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707900005] [2024-11-14 04:41:41,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707900005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:41:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482374986] [2024-11-14 04:41:41,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:41:41,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:41:41,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:41:41,553 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:41:41,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-14 04:41:41,617 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 04:41:41,617 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:41:41,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:41:41,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:41:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-14 04:41:42,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:41:46,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482374986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:41:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [13936982] [2024-11-14 04:41:46,333 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:41:46,333 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:41:46,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:41:46,334 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:41:46,334 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:41:48,109 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:41:48,111 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:42:25,885 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37824#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 20) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-14 04:42:25,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:42:25,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:42:25,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 24 [2024-11-14 04:42:25,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209264624] [2024-11-14 04:42:25,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:42:25,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 04:42:25,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:42:25,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 04:42:25,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=2434, Unknown=16, NotChecked=0, Total=2970 [2024-11-14 04:42:25,887 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 24 states have internal predecessors, (132), 9 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 10 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-14 04:42:31,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:42:31,878 INFO L93 Difference]: Finished difference Result 545 states and 650 transitions. [2024-11-14 04:42:31,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-14 04:42:31,878 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 24 states have internal predecessors, (132), 9 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 10 states have call predecessors, (28), 9 states have call successors, (28) Word has length 151 [2024-11-14 04:42:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:42:31,879 INFO L225 Difference]: With dead ends: 545 [2024-11-14 04:42:31,879 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 04:42:31,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 265 SyntacticMatches, 9 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4590 ImplicationChecksByTransitivity, 45.7s TimeCoverageRelationStatistics Valid=2279, Invalid=10137, Unknown=16, NotChecked=0, Total=12432 [2024-11-14 04:42:31,883 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 770 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:42:31,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 154 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-14 04:42:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 04:42:31,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 04:42:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:42:31,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 04:42:31,884 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2024-11-14 04:42:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:42:31,884 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 04:42:31,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 24 states have internal predecessors, (132), 9 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 10 states have call predecessors, (28), 9 states have call successors, (28) [2024-11-14 04:42:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 04:42:31,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 04:42:31,888 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2024-11-14 04:42:31,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2024-11-14 04:42:31,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2024-11-14 04:42:31,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2024-11-14 04:42:31,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2024-11-14 04:42:31,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2024-11-14 04:42:31,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2024-11-14 04:42:31,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2024-11-14 04:42:31,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2024-11-14 04:42:31,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2024-11-14 04:42:31,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2024-11-14 04:42:31,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2024-11-14 04:42:31,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2024-11-14 04:42:31,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2024-11-14 04:42:31,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2024-11-14 04:42:31,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2024-11-14 04:42:31,891 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2024-11-14 04:42:31,891 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2024-11-14 04:42:31,891 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2024-11-14 04:42:31,891 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2024-11-14 04:42:31,891 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2024-11-14 04:42:31,891 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2024-11-14 04:42:31,891 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2024-11-14 04:42:31,891 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2024-11-14 04:42:31,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-14 04:42:32,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2014de6d-7dce-4adc-9224-687ff38c618e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:42:32,095 INFO L407 BasicCegarLoop]: Path program histogram: [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:42:32,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.