./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.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_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/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_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/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_986c5c3a-2463-4430-be26-d87d8bce3435/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 a077c1334c11d8329da2d0c58ca917b2036581fa7e949d1d304e3346ec54a811 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:59:35,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:59:35,144 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-14 03:59:35,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:59:35,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:59:35,185 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:59:35,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:59:35,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:59:35,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:59:35,188 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:59:35,189 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:59:35,189 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:59:35,189 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:59:35,190 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:59:35,190 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:59:35,190 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:59:35,190 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:59:35,190 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:59:35,190 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:59:35,190 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:59:35,191 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:59:35,191 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:59:35,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:59:35,192 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:59:35,192 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:59:35,192 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:59:35,192 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:59:35,193 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:59:35,193 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:59:35,193 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:59:35,193 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:59:35,193 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:59:35,194 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 03:59:35,194 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:59:35,194 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:59:35,194 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:59:35,195 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:59:35,195 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:59:35,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:59:35,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:59:35,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:59:35,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:59:35,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:59:35,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:59:35,196 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:59:35,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:59:35,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:59:35,196 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:59:35,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:59:35,196 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_986c5c3a-2463-4430-be26-d87d8bce3435/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 -> a077c1334c11d8329da2d0c58ca917b2036581fa7e949d1d304e3346ec54a811 [2024-11-14 03:59:35,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:59:35,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:59:35,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:59:35,546 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:59:35,546 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:59:35,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c Unable to find full path for "g++" [2024-11-14 03:59:37,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:59:37,766 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:59:37,768 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2024-11-14 03:59:37,779 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/data/65f210850/6e30dcadef824b34916a3def261793da/FLAGf7595b270 [2024-11-14 03:59:38,065 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/data/65f210850/6e30dcadef824b34916a3def261793da [2024-11-14 03:59:38,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:59:38,070 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:59:38,073 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:59:38,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:59:38,081 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:59:38,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab79b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38, skipping insertion in model container [2024-11-14 03:59:38,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,105 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:59:38,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:59:38,349 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:59:38,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:59:38,385 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:59:38,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38 WrapperNode [2024-11-14 03:59:38,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:59:38,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:59:38,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:59:38,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:59:38,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,448 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2024-11-14 03:59:38,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:59:38,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:59:38,451 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:59:38,451 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:59:38,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,464 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:59:38,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:59:38,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:59:38,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:59:38,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38" (1/1) ... [2024-11-14 03:59:38,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:59:38,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:38,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:59:38,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:59:38,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:59:38,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:59:38,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:59:38,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:59:38,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 03:59:38,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 03:59:38,631 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:59:38,633 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:59:39,046 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-14 03:59:39,047 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:59:39,117 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:59:39,117 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 03:59:39,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:59:39 BoogieIcfgContainer [2024-11-14 03:59:39,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:59:39,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:59:39,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:59:39,129 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:59:39,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:59:38" (1/3) ... [2024-11-14 03:59:39,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53326204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:59:39, skipping insertion in model container [2024-11-14 03:59:39,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:59:38" (2/3) ... [2024-11-14 03:59:39,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53326204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:59:39, skipping insertion in model container [2024-11-14 03:59:39,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:59:39" (3/3) ... [2024-11-14 03:59:39,135 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound5.c [2024-11-14 03:59:39,159 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:59:39,161 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hard2_valuebound5.c that has 2 procedures, 65 locations, 1 initial locations, 2 loop locations, and 24 error locations. [2024-11-14 03:59:39,242 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:59:39,263 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;@1d4d45fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:59:39,263 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-14 03:59:39,268 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 03:59:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 03:59:39,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:39,276 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 03:59:39,277 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 03:59:39,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:39,284 INFO L85 PathProgramCache]: Analyzing trace with hash 5353265, now seen corresponding path program 1 times [2024-11-14 03:59:39,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:39,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340685789] [2024-11-14 03:59:39,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:39,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:59:39,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:39,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340685789] [2024-11-14 03:59:39,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340685789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:39,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:39,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:59:39,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872881498] [2024-11-14 03:59:39,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:39,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 03:59:39,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:39,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 03:59:39,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:59:39,461 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 03:59:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:39,514 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2024-11-14 03:59:39,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 03:59:39,520 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 03:59:39,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:39,530 INFO L225 Difference]: With dead ends: 112 [2024-11-14 03:59:39,530 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 03:59:39,533 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 03:59:39,536 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 03:59:39,537 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 03:59:39,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 03:59:39,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-14 03:59:39,569 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 03:59:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2024-11-14 03:59:39,575 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 4 [2024-11-14 03:59:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:39,575 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2024-11-14 03:59:39,576 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 03:59:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2024-11-14 03:59:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:59:39,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:39,577 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:59:39,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:59:39,578 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 03:59:39,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:39,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1735968466, now seen corresponding path program 1 times [2024-11-14 03:59:39,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:39,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204342988] [2024-11-14 03:59:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:39,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:59:39,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119937306] [2024-11-14 03:59:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:39,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:39,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:39,618 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:39,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:59:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:39,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:59:39,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:39,770 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 03:59:39,770 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:59:39,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:39,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204342988] [2024-11-14 03:59:39,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:59:39,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119937306] [2024-11-14 03:59:39,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119937306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:39,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:39,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:59:39,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59984939] [2024-11-14 03:59:39,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:39,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:59:39,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:59:39,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:59:39,776 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 03:59:39,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:39,897 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2024-11-14 03:59:39,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:59:39,897 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 03:59:39,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:39,899 INFO L225 Difference]: With dead ends: 131 [2024-11-14 03:59:39,899 INFO L226 Difference]: Without dead ends: 84 [2024-11-14 03:59:39,899 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 03:59:39,900 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 03:59:39,900 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 03:59:39,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-14 03:59:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-11-14 03:59:39,911 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 03:59:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-11-14 03:59:39,912 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 9 [2024-11-14 03:59:39,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:39,914 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-11-14 03:59:39,916 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 03:59:39,916 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-11-14 03:59:39,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:59:39,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:39,917 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:59:39,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:59:40,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:40,118 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 03:59:40,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:40,119 INFO L85 PathProgramCache]: Analyzing trace with hash -17467134, now seen corresponding path program 1 times [2024-11-14 03:59:40,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:40,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641821807] [2024-11-14 03:59:40,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:40,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:40,372 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 03:59:40,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:40,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641821807] [2024-11-14 03:59:40,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641821807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:40,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:40,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:59:40,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156251552] [2024-11-14 03:59:40,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:40,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:59:40,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:40,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:59:40,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:59:40,376 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 03:59:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:40,484 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2024-11-14 03:59:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:59:40,485 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 03:59:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:40,486 INFO L225 Difference]: With dead ends: 92 [2024-11-14 03:59:40,486 INFO L226 Difference]: Without dead ends: 90 [2024-11-14 03:59:40,487 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 03:59:40,487 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 03:59:40,489 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 03:59:40,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-14 03:59:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2024-11-14 03:59:40,507 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 03:59:40,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2024-11-14 03:59:40,512 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 15 [2024-11-14 03:59:40,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:40,513 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2024-11-14 03:59:40,513 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 03:59:40,513 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2024-11-14 03:59:40,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 03:59:40,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:40,514 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:59:40,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:59:40,514 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 03:59:40,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:40,515 INFO L85 PathProgramCache]: Analyzing trace with hash -541482501, now seen corresponding path program 1 times [2024-11-14 03:59:40,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:40,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927808936] [2024-11-14 03:59:40,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:40,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:59:40,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902938710] [2024-11-14 03:59:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:40,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:40,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:40,565 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:40,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:59:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:40,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:59:40,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:40,664 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 03:59:40,664 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:59:40,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:40,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927808936] [2024-11-14 03:59:40,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:59:40,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902938710] [2024-11-14 03:59:40,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902938710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:40,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:40,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:59:40,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733436854] [2024-11-14 03:59:40,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:40,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:59:40,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:40,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:59:40,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:59:40,668 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 03:59:40,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:40,802 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2024-11-14 03:59:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:59:40,803 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 03:59:40,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:40,805 INFO L225 Difference]: With dead ends: 117 [2024-11-14 03:59:40,806 INFO L226 Difference]: Without dead ends: 113 [2024-11-14 03:59:40,806 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 03:59:40,809 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 39 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:40,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 78 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:59:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-14 03:59:40,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 99. [2024-11-14 03:59:40,829 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 03:59:40,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2024-11-14 03:59:40,831 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 16 [2024-11-14 03:59:40,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:40,832 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2024-11-14 03:59:40,832 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 03:59:40,832 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2024-11-14 03:59:40,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 03:59:40,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:40,833 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:59:40,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:59:41,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:41,034 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 03:59:41,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash -673638051, now seen corresponding path program 1 times [2024-11-14 03:59:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:41,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156101105] [2024-11-14 03:59:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:41,152 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 03:59:41,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156101105] [2024-11-14 03:59:41,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156101105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:41,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:41,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:59:41,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869448288] [2024-11-14 03:59:41,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:41,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:59:41,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:41,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:59:41,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:59:41,154 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 03:59:41,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:41,681 INFO L93 Difference]: Finished difference Result 115 states and 139 transitions. [2024-11-14 03:59:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:59:41,682 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 03:59:41,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:41,683 INFO L225 Difference]: With dead ends: 115 [2024-11-14 03:59:41,683 INFO L226 Difference]: Without dead ends: 114 [2024-11-14 03:59:41,683 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 03:59:41,684 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 129 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:41,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 68 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:59:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-14 03:59:41,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2024-11-14 03:59:41,700 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 03:59:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2024-11-14 03:59:41,702 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 18 [2024-11-14 03:59:41,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:41,702 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2024-11-14 03:59:41,702 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 03:59:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2024-11-14 03:59:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 03:59:41,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:41,705 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 03:59:41,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:59:41,705 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 03:59:41,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:41,706 INFO L85 PathProgramCache]: Analyzing trace with hash 592056984, now seen corresponding path program 1 times [2024-11-14 03:59:41,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:41,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390833455] [2024-11-14 03:59:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:41,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:41,856 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 03:59:41,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:41,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390833455] [2024-11-14 03:59:41,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390833455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:41,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:41,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:59:41,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42414973] [2024-11-14 03:59:41,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:41,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:59:41,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:41,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:59:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:59:41,859 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 03:59:42,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:42,377 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2024-11-14 03:59:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:59:42,378 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 03:59:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:42,379 INFO L225 Difference]: With dead ends: 110 [2024-11-14 03:59:42,379 INFO L226 Difference]: Without dead ends: 109 [2024-11-14 03:59:42,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:59:42,380 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 74 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:42,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 101 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:59:42,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-14 03:59:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2024-11-14 03:59:42,398 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 03:59:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2024-11-14 03:59:42,399 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 19 [2024-11-14 03:59:42,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:42,400 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2024-11-14 03:59:42,400 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 03:59:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2024-11-14 03:59:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 03:59:42,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:42,401 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 03:59:42,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 03:59:42,401 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 03:59:42,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:42,402 INFO L85 PathProgramCache]: Analyzing trace with hash -682443809, now seen corresponding path program 1 times [2024-11-14 03:59:42,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:42,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528800304] [2024-11-14 03:59:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:42,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:59:42,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1939080494] [2024-11-14 03:59:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:42,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:42,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:42,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:42,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:59:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:42,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:59:42,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:42,623 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 03:59:42,623 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:59:42,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:42,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528800304] [2024-11-14 03:59:42,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:59:42,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939080494] [2024-11-14 03:59:42,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939080494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:42,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:42,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:59:42,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519593172] [2024-11-14 03:59:42,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:42,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:59:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:42,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:59:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:59:42,626 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 03:59:42,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:42,788 INFO L93 Difference]: Finished difference Result 120 states and 148 transitions. [2024-11-14 03:59:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:59:42,788 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 03:59:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:42,790 INFO L225 Difference]: With dead ends: 120 [2024-11-14 03:59:42,790 INFO L226 Difference]: Without dead ends: 110 [2024-11-14 03:59:42,790 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 03:59:42,792 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 38 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:42,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 97 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:59:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-14 03:59:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-14 03:59:42,829 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 03:59:42,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2024-11-14 03:59:42,830 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 26 [2024-11-14 03:59:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:42,830 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2024-11-14 03:59:42,830 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 03:59:42,831 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2024-11-14 03:59:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 03:59:42,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:42,831 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 03:59:42,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:59:43,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 03:59:43,032 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 03:59:43,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:43,033 INFO L85 PathProgramCache]: Analyzing trace with hash 319078454, now seen corresponding path program 1 times [2024-11-14 03:59:43,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:43,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989695041] [2024-11-14 03:59:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:43,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:59:43,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341368668] [2024-11-14 03:59:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:43,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:43,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:43,073 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:43,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:59:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:43,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:59:43,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:43,247 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 03:59:43,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:59:43,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989695041] [2024-11-14 03:59:43,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:59:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341368668] [2024-11-14 03:59:43,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341368668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:59:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [323038944] [2024-11-14 03:59:43,797 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:59:43,798 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:59:43,801 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:59:43,805 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:59:43,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:59:46,087 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-14 03:59:46,089 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:59:47,100 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2072#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 5) (= |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 03:59:47,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:59:47,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:59:47,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2024-11-14 03:59:47,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400370291] [2024-11-14 03:59:47,102 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 03:59:47,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:59:47,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:47,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:59:47,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:59:47,105 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 03:59:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:47,283 INFO L93 Difference]: Finished difference Result 186 states and 239 transitions. [2024-11-14 03:59:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:59:47,284 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 03:59:47,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:47,286 INFO L225 Difference]: With dead ends: 186 [2024-11-14 03:59:47,287 INFO L226 Difference]: Without dead ends: 182 [2024-11-14 03:59:47,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:59:47,288 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 59 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:47,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 90 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:59:47,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-14 03:59:47,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2024-11-14 03:59:47,324 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 03:59:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 225 transitions. [2024-11-14 03:59:47,329 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 225 transitions. Word has length 27 [2024-11-14 03:59:47,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:47,330 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 225 transitions. [2024-11-14 03:59:47,330 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 03:59:47,330 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 225 transitions. [2024-11-14 03:59:47,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 03:59:47,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:47,331 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 03:59:47,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 03:59:47,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:47,532 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 03:59:47,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:47,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1516011015, now seen corresponding path program 1 times [2024-11-14 03:59:47,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:47,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317550443] [2024-11-14 03:59:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:47,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:47,736 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 03:59:47,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:47,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317550443] [2024-11-14 03:59:47,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317550443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:47,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:47,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:59:47,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985204189] [2024-11-14 03:59:47,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:47,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:59:47,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:47,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:59:47,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:59:47,739 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 03:59:48,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:48,228 INFO L93 Difference]: Finished difference Result 182 states and 237 transitions. [2024-11-14 03:59:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:59:48,228 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 03:59:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:48,230 INFO L225 Difference]: With dead ends: 182 [2024-11-14 03:59:48,230 INFO L226 Difference]: Without dead ends: 181 [2024-11-14 03:59:48,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:59:48,231 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 49 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:48,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 129 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:59:48,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-14 03:59:48,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2024-11-14 03:59:48,254 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 03:59:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2024-11-14 03:59:48,256 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 31 [2024-11-14 03:59:48,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:48,257 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2024-11-14 03:59:48,257 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 03:59:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2024-11-14 03:59:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 03:59:48,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:48,258 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 03:59:48,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 03:59:48,259 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 03:59:48,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash 918975219, now seen corresponding path program 1 times [2024-11-14 03:59:48,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:48,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364376948] [2024-11-14 03:59:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:48,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:48,351 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 03:59:48,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:48,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364376948] [2024-11-14 03:59:48,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364376948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:59:48,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502924302] [2024-11-14 03:59:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:48,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:48,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:48,355 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:48,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:59:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:48,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:59:48,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:48,458 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 03:59:48,459 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:59:48,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502924302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:48,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:59:48,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-14 03:59:48,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278621216] [2024-11-14 03:59:48,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:48,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:59:48,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:48,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:59:48,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:59:48,461 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 03:59:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:48,596 INFO L93 Difference]: Finished difference Result 254 states and 347 transitions. [2024-11-14 03:59:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:59:48,596 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 03:59:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:48,599 INFO L225 Difference]: With dead ends: 254 [2024-11-14 03:59:48,599 INFO L226 Difference]: Without dead ends: 252 [2024-11-14 03:59:48,599 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 03:59:48,600 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 03:59:48,600 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 03:59:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-14 03:59:48,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 232. [2024-11-14 03:59:48,631 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 03:59:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 321 transitions. [2024-11-14 03:59:48,633 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 321 transitions. Word has length 32 [2024-11-14 03:59:48,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:48,634 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 321 transitions. [2024-11-14 03:59:48,634 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 03:59:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 321 transitions. [2024-11-14 03:59:48,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 03:59:48,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:48,635 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 03:59:48,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 03:59:48,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 03:59:48,839 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 03:59:48,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:48,840 INFO L85 PathProgramCache]: Analyzing trace with hash 248298920, now seen corresponding path program 1 times [2024-11-14 03:59:48,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:48,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376050218] [2024-11-14 03:59:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:48,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:48,943 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 03:59:48,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:48,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376050218] [2024-11-14 03:59:48,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376050218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:48,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:48,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:59:48,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704271653] [2024-11-14 03:59:48,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:48,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:59:48,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:48,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:59:48,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:59:48,946 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 03:59:49,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:49,102 INFO L93 Difference]: Finished difference Result 237 states and 325 transitions. [2024-11-14 03:59:49,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:59:49,103 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 03:59:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:49,105 INFO L225 Difference]: With dead ends: 237 [2024-11-14 03:59:49,105 INFO L226 Difference]: Without dead ends: 222 [2024-11-14 03:59:49,105 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 03:59:49,106 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 03:59:49,106 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 03:59:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-14 03:59:49,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2024-11-14 03:59:49,129 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 03:59:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 308 transitions. [2024-11-14 03:59:49,131 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 308 transitions. Word has length 32 [2024-11-14 03:59:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:49,132 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 308 transitions. [2024-11-14 03:59:49,132 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 03:59:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 308 transitions. [2024-11-14 03:59:49,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 03:59:49,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:49,133 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 03:59:49,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 03:59:49,133 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 03:59:49,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:49,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1576539220, now seen corresponding path program 1 times [2024-11-14 03:59:49,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:49,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460166444] [2024-11-14 03:59:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:49,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:49,217 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 03:59:49,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:49,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460166444] [2024-11-14 03:59:49,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460166444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:59:49,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873400364] [2024-11-14 03:59:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:49,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:49,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:49,220 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:49,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:59:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:49,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:59:49,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:49,336 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 03:59:49,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:59:49,417 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 03:59:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873400364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:59:49,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2123139429] [2024-11-14 03:59:49,419 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-14 03:59:49,419 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:59:49,419 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:59:49,419 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:59:49,419 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:59:50,876 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2024-11-14 03:59:50,877 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:59:51,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2123139429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:51,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:59:51,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [3, 3, 3] total 17 [2024-11-14 03:59:51,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22355709] [2024-11-14 03:59:51,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:51,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 03:59:51,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:51,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 03:59:51,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:59:51,580 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 03:59:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:52,524 INFO L93 Difference]: Finished difference Result 233 states and 318 transitions. [2024-11-14 03:59:52,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:59:52,524 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 03:59:52,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:52,526 INFO L225 Difference]: With dead ends: 233 [2024-11-14 03:59:52,526 INFO L226 Difference]: Without dead ends: 221 [2024-11-14 03:59:52,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2024-11-14 03:59:52,527 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 03:59:52,527 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 03:59:52,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-14 03:59:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 190. [2024-11-14 03:59:52,564 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 03:59:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 256 transitions. [2024-11-14 03:59:52,567 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 256 transitions. Word has length 33 [2024-11-14 03:59:52,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:52,568 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 256 transitions. [2024-11-14 03:59:52,568 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 03:59:52,568 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 256 transitions. [2024-11-14 03:59:52,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 03:59:52,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:52,571 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 03:59:52,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-14 03:59:52,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:52,772 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 03:59:52,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:52,772 INFO L85 PathProgramCache]: Analyzing trace with hash -614957125, now seen corresponding path program 1 times [2024-11-14 03:59:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:52,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532170170] [2024-11-14 03:59:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:52,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:52,840 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 03:59:52,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:52,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532170170] [2024-11-14 03:59:52,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532170170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:52,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:52,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:59:52,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648315855] [2024-11-14 03:59:52,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:52,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:59:52,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:52,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:59:52,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:59:52,843 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 03:59:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:52,911 INFO L93 Difference]: Finished difference Result 190 states and 256 transitions. [2024-11-14 03:59:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:59:52,911 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 03:59:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:52,913 INFO L225 Difference]: With dead ends: 190 [2024-11-14 03:59:52,913 INFO L226 Difference]: Without dead ends: 189 [2024-11-14 03:59:52,913 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 03:59:52,914 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:52,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 83 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:59:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-14 03:59:52,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-14 03:59:52,940 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 03:59:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 252 transitions. [2024-11-14 03:59:52,942 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 252 transitions. Word has length 51 [2024-11-14 03:59:52,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:52,942 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 252 transitions. [2024-11-14 03:59:52,942 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 03:59:52,942 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 252 transitions. [2024-11-14 03:59:52,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 03:59:52,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:52,944 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 03:59:52,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 03:59:52,944 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 03:59:52,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1883801580, now seen corresponding path program 1 times [2024-11-14 03:59:52,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:52,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911012864] [2024-11-14 03:59:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:52,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:53,161 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 03:59:53,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:53,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911012864] [2024-11-14 03:59:53,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911012864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:59:53,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637256585] [2024-11-14 03:59:53,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:53,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:53,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:53,164 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:53,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 03:59:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:53,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:59:53,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:53,429 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 03:59:53,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:59:53,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637256585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:53,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:59:53,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-14 03:59:53,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827901284] [2024-11-14 03:59:53,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:53,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:59:53,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:53,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:59:53,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:59:53,431 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 03:59:53,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:53,575 INFO L93 Difference]: Finished difference Result 225 states and 291 transitions. [2024-11-14 03:59:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:59:53,576 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 03:59:53,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:53,579 INFO L225 Difference]: With dead ends: 225 [2024-11-14 03:59:53,580 INFO L226 Difference]: Without dead ends: 224 [2024-11-14 03:59:53,581 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 03:59:53,581 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 03:59:53,582 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 03:59:53,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-14 03:59:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 189. [2024-11-14 03:59:53,618 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 03:59:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 250 transitions. [2024-11-14 03:59:53,623 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 250 transitions. Word has length 52 [2024-11-14 03:59:53,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:53,624 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 250 transitions. [2024-11-14 03:59:53,624 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 03:59:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 250 transitions. [2024-11-14 03:59:53,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 03:59:53,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:53,626 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 03:59:53,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 03:59:53,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:53,830 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 03:59:53,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1731693277, now seen corresponding path program 1 times [2024-11-14 03:59:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:53,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550623739] [2024-11-14 03:59:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:54,029 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 03:59:54,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:54,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550623739] [2024-11-14 03:59:54,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550623739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:59:54,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67073549] [2024-11-14 03:59:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:54,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:54,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:54,032 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:54,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 03:59:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:54,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:59:54,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:54,298 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 03:59:54,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:59:54,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67073549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:54,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:59:54,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-14 03:59:54,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860698018] [2024-11-14 03:59:54,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:54,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:59:54,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:54,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:59:54,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:59:54,300 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 03:59:54,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:54,550 INFO L93 Difference]: Finished difference Result 199 states and 264 transitions. [2024-11-14 03:59:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:59:54,550 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 03:59:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:54,552 INFO L225 Difference]: With dead ends: 199 [2024-11-14 03:59:54,552 INFO L226 Difference]: Without dead ends: 198 [2024-11-14 03:59:54,552 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 03:59:54,553 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 38 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:54,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 96 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:59:54,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-14 03:59:54,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2024-11-14 03:59:54,586 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 03:59:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 256 transitions. [2024-11-14 03:59:54,588 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 256 transitions. Word has length 53 [2024-11-14 03:59:54,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:54,588 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 256 transitions. [2024-11-14 03:59:54,588 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 03:59:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 256 transitions. [2024-11-14 03:59:54,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 03:59:54,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:54,589 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 03:59:54,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 03:59:54,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:54,793 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 03:59:54,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2142884150, now seen corresponding path program 1 times [2024-11-14 03:59:54,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:54,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230586803] [2024-11-14 03:59:54,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:54,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:55,008 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 03:59:55,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230586803] [2024-11-14 03:59:55,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230586803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:59:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757157647] [2024-11-14 03:59:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:55,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:55,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:55,011 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:55,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 03:59:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:55,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:59:55,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:55,201 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 03:59:55,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:59:55,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757157647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:55,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:59:55,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-14 03:59:55,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480896213] [2024-11-14 03:59:55,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:55,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:59:55,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:55,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:59:55,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:59:55,204 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 03:59:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:55,401 INFO L93 Difference]: Finished difference Result 199 states and 260 transitions. [2024-11-14 03:59:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:59:55,402 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 03:59:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:55,403 INFO L225 Difference]: With dead ends: 199 [2024-11-14 03:59:55,403 INFO L226 Difference]: Without dead ends: 198 [2024-11-14 03:59:55,404 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 03:59:55,404 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:55,405 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 03:59:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-14 03:59:55,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2024-11-14 03:59:55,435 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 03:59:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 256 transitions. [2024-11-14 03:59:55,437 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 256 transitions. Word has length 54 [2024-11-14 03:59:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:55,438 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 256 transitions. [2024-11-14 03:59:55,438 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 03:59:55,438 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 256 transitions. [2024-11-14 03:59:55,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 03:59:55,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:55,439 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 03:59:55,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 03:59:55,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:55,643 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 03:59:55,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:55,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2022335832, now seen corresponding path program 1 times [2024-11-14 03:59:55,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:55,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4238184] [2024-11-14 03:59:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:55,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:59:55,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582048191] [2024-11-14 03:59:55,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:55,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:55,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:55,686 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:55,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 03:59:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:55,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:59:55,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:56,029 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 03:59:56,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:59:58,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:58,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4238184] [2024-11-14 03:59:58,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:59:58,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582048191] [2024-11-14 03:59:58,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582048191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:59:58,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [916797021] [2024-11-14 03:59:58,652 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 03:59:58,652 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:59:58,653 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:59:58,653 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:59:58,654 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:00:02,497 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:00:02,500 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:00:10,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [916797021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:10,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:00:10,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [5] total 29 [2024-11-14 04:00:10,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022541832] [2024-11-14 04:00:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:10,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 04:00:10,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 04:00:10,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=907, Unknown=3, NotChecked=0, Total=1122 [2024-11-14 04:00:10,777 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 04:00:13,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:00:16,086 WARN L539 Checker$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 04:00:18,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:00:20,233 WARN L539 Checker$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 04:00:22,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-14 04:00:24,554 WARN L539 Checker$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 04:00:26,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:00:28,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-14 04:00:30,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:30,614 INFO L93 Difference]: Finished difference Result 220 states and 292 transitions. [2024-11-14 04:00:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-14 04:00:30,614 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 04:00:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:30,616 INFO L225 Difference]: With dead ends: 220 [2024-11-14 04:00:30,616 INFO L226 Difference]: Without dead ends: 212 [2024-11-14 04:00:30,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=709, Invalid=2368, Unknown=3, NotChecked=0, Total=3080 [2024-11-14 04:00:30,617 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 519 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 228 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:30,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 49 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 722 Invalid, 8 Unknown, 0 Unchecked, 16.2s Time] [2024-11-14 04:00:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-14 04:00:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 76. [2024-11-14 04:00:30,642 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 04:00:30,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2024-11-14 04:00:30,643 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 56 [2024-11-14 04:00:30,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:30,644 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2024-11-14 04:00:30,644 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 04:00:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2024-11-14 04:00:30,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-14 04:00:30,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:30,645 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 04:00:30,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 04:00:30,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-14 04:00:30,846 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 04:00:30,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1900590619, now seen corresponding path program 1 times [2024-11-14 04:00:30,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:30,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172390751] [2024-11-14 04:00:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:30,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:31,072 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 04:00:31,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:31,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172390751] [2024-11-14 04:00:31,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172390751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:00:31,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333761484] [2024-11-14 04:00:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:31,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:00:31,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:00:31,075 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:00:31,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 04:00:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:31,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 04:00:31,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:00:31,717 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 04:00:31,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:00:32,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333761484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:00:32,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [727099687] [2024-11-14 04:00:32,819 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:00:32,820 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:00:32,820 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:00:32,821 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:00:32,821 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:00:35,912 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:00:35,914 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:00:45,187 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|)) (<= |v_ULTIMATE.start_main_~r~0#1_49| 2147483647) (= |v_ULTIMATE.start_main_~B~0#1_43| 1) (<= |ULTIMATE.start_main_~A~0#1| 5) (<= 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 04:00:45,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:00:45,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:00:45,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-14 04:00:45,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987275279] [2024-11-14 04:00:45,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:00:45,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 04:00:45,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:45,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 04:00:45,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1787, Unknown=2, NotChecked=0, Total=1980 [2024-11-14 04:00:45,190 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 04:00:46,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:00:46,747 INFO L93 Difference]: Finished difference Result 309 states and 392 transitions. [2024-11-14 04:00:46,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-14 04:00:46,748 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 04:00:46,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:00:46,750 INFO L225 Difference]: With dead ends: 309 [2024-11-14 04:00:46,750 INFO L226 Difference]: Without dead ends: 304 [2024-11-14 04:00:46,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 93 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=408, Invalid=3372, Unknown=2, NotChecked=0, Total=3782 [2024-11-14 04:00:46,752 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 467 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:00:46,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 184 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 04:00:46,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-14 04:00:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 181. [2024-11-14 04:00:46,809 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 04:00:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 221 transitions. [2024-11-14 04:00:46,811 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 221 transitions. Word has length 59 [2024-11-14 04:00:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:00:46,811 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 221 transitions. [2024-11-14 04:00:46,811 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 04:00:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 221 transitions. [2024-11-14 04:00:46,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 04:00:46,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:00:46,813 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 04:00:46,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 04:00:47,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 04:00:47,014 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 04:00:47,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:00:47,015 INFO L85 PathProgramCache]: Analyzing trace with hash -485460006, now seen corresponding path program 1 times [2024-11-14 04:00:47,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:00:47,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782867982] [2024-11-14 04:00:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:47,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:00:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:00:47,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822748629] [2024-11-14 04:00:47,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:00:47,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:00:47,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:00:47,053 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:00:47,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 04:00:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:00:47,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 04:00:47,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:00:47,505 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 04:00:47,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:00:48,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:00:48,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782867982] [2024-11-14 04:00:48,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:00:48,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822748629] [2024-11-14 04:00:48,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822748629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:00:48,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [259416490] [2024-11-14 04:00:48,090 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-14 04:00:48,090 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:00:48,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:00:48,091 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:00:48,091 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:00:50,727 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:00:50,728 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:01:00,936 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9139#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (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_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-14 04:01:00,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:01:00,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:01:00,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-14 04:01:00,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64506250] [2024-11-14 04:01:00,937 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:01:00,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:01:00,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:01:00,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:01:00,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1334, Unknown=2, NotChecked=0, Total=1560 [2024-11-14 04:01:00,938 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 04:01:01,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:01:01,372 INFO L93 Difference]: Finished difference Result 208 states and 244 transitions. [2024-11-14 04:01:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:01:01,372 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 04:01:01,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:01:01,374 INFO L225 Difference]: With dead ends: 208 [2024-11-14 04:01:01,374 INFO L226 Difference]: Without dead ends: 122 [2024-11-14 04:01:01,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=224, Invalid=1334, Unknown=2, NotChecked=0, Total=1560 [2024-11-14 04:01:01,375 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:01:01,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 120 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:01:01,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-14 04:01:01,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2024-11-14 04:01:01,413 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 04:01:01,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2024-11-14 04:01:01,414 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 69 [2024-11-14 04:01:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:01:01,415 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2024-11-14 04:01:01,415 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 04:01:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2024-11-14 04:01:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 04:01:01,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:01:01,416 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 04:01:01,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-14 04:01:01,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:01,620 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 04:01:01,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:01:01,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1624373500, now seen corresponding path program 1 times [2024-11-14 04:01:01,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:01:01,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993672529] [2024-11-14 04:01:01,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:01,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:01:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:01,720 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 04:01:01,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:01:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993672529] [2024-11-14 04:01:01,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993672529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:01:01,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:01:01,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:01:01,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480277540] [2024-11-14 04:01:01,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:01:01,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:01:01,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:01:01,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:01:01,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:01:01,722 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 04:01:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:01:02,198 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2024-11-14 04:01:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:01:02,199 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 04:01:02,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:01:02,200 INFO L225 Difference]: With dead ends: 119 [2024-11-14 04:01:02,200 INFO L226 Difference]: Without dead ends: 86 [2024-11-14 04:01:02,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:01:02,201 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:01:02,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 77 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:01:02,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-14 04:01:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-14 04:01:02,231 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 04:01:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2024-11-14 04:01:02,231 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 71 [2024-11-14 04:01:02,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:01:02,232 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2024-11-14 04:01:02,232 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 04:01:02,232 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2024-11-14 04:01:02,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 04:01:02,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:01:02,235 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 04:01:02,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-14 04:01:02,235 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 04:01:02,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:01:02,235 INFO L85 PathProgramCache]: Analyzing trace with hash 530533004, now seen corresponding path program 2 times [2024-11-14 04:01:02,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:01:02,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636102066] [2024-11-14 04:01:02,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:02,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:01:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:01:02,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307656350] [2024-11-14 04:01:02,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:01:02,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:02,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:01:02,266 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:01:02,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 04:01:02,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 04:01:02,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:01:02,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:01:02,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:01:02,920 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 04:01:02,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:01:14,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:01:14,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636102066] [2024-11-14 04:01:14,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:01:14,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307656350] [2024-11-14 04:01:14,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307656350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:14,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [998189449] [2024-11-14 04:01:14,277 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:01:14,277 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:01:14,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:01:14,277 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:01:14,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:01:16,966 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:01:16,967 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:01:46,272 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) (= |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|)) (<= |ULTIMATE.start_main_~A~0#1| 5) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= |v_ULTIMATE.start_main_~q~0#1_67| 2147483647)))' at error location [2024-11-14 04:01:46,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:01:46,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:01:46,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-14 04:01:46,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490148181] [2024-11-14 04:01:46,273 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:01:46,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:01:46,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:01:46,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:01:46,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1350, Unknown=15, NotChecked=0, Total=1722 [2024-11-14 04:01:46,274 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 04:01:46,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:01:46,614 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2024-11-14 04:01:46,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:01:46,614 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 04:01:46,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:01:46,616 INFO L225 Difference]: With dead ends: 123 [2024-11-14 04:01:46,616 INFO L226 Difference]: Without dead ends: 122 [2024-11-14 04:01:46,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=357, Invalid=1350, Unknown=15, NotChecked=0, Total=1722 [2024-11-14 04:01:46,617 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:01:46,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 59 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:01:46,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-14 04:01:46,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2024-11-14 04:01:46,646 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 04:01:46,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2024-11-14 04:01:46,647 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 76 [2024-11-14 04:01:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:01:46,647 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2024-11-14 04:01:46,647 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 04:01:46,647 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2024-11-14 04:01:46,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-14 04:01:46,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:01:46,648 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 04:01:46,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-14 04:01:46,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-14 04:01:46,853 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 04:01:46,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:01:46,853 INFO L85 PathProgramCache]: Analyzing trace with hash 238088971, now seen corresponding path program 2 times [2024-11-14 04:01:46,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:01:46,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546772507] [2024-11-14 04:01:46,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:46,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:01:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:47,062 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 04:01:47,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:01:47,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546772507] [2024-11-14 04:01:47,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546772507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:47,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394965106] [2024-11-14 04:01:47,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:01:47,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:47,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:01:47,065 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:01:47,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 04:01:47,132 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 04:01:47,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:01:47,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:01:47,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:01:47,289 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 04:01:47,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:01:47,489 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 04:01:47,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394965106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:01:47,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1636282905] [2024-11-14 04:01:47,491 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-14 04:01:47,491 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:01:47,491 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:01:47,491 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:01:47,491 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:01:49,798 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:01:49,799 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:01:57,433 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10917#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (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_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-14 04:01:57,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:01:57,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:01:57,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2024-11-14 04:01:57,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032002805] [2024-11-14 04:01:57,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:01:57,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:01:57,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:01:57,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:01:57,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=850, Unknown=2, NotChecked=0, Total=992 [2024-11-14 04:01:57,436 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 04:01:57,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:01:57,622 INFO L93 Difference]: Finished difference Result 136 states and 158 transitions. [2024-11-14 04:01:57,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:01:57,626 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 04:01:57,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:01:57,626 INFO L225 Difference]: With dead ends: 136 [2024-11-14 04:01:57,626 INFO L226 Difference]: Without dead ends: 129 [2024-11-14 04:01:57,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 224 SyntacticMatches, 10 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=140, Invalid=850, Unknown=2, NotChecked=0, Total=992 [2024-11-14 04:01:57,628 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 30 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:01:57,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 103 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:01:57,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-14 04:01:57,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2024-11-14 04:01:57,659 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 04:01:57,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2024-11-14 04:01:57,659 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 86 [2024-11-14 04:01:57,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:01:57,660 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2024-11-14 04:01:57,660 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 04:01:57,660 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2024-11-14 04:01:57,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-14 04:01:57,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:01:57,661 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 04:01:57,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-14 04:01:57,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:57,865 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 04:01:57,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:01:57,865 INFO L85 PathProgramCache]: Analyzing trace with hash -804474729, now seen corresponding path program 1 times [2024-11-14 04:01:57,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:01:57,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967216385] [2024-11-14 04:01:57,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:57,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:01:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:58,245 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 04:01:58,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:01:58,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967216385] [2024-11-14 04:01:58,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967216385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:01:58,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861866983] [2024-11-14 04:01:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:01:58,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:01:58,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:01:58,248 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:01:58,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 04:01:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:01:58,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 04:01:58,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:01:59,079 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 04:01:59,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:02:01,356 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 04:02:01,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861866983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:02:01,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2085714616] [2024-11-14 04:02:01,359 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:02:01,359 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:02:01,359 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:02:01,359 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:02:01,359 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:02:03,548 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:02:03,549 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:02:30,846 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11822#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2024-11-14 04:02:30,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:02:30,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:02:30,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6] total 24 [2024-11-14 04:02:30,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856879020] [2024-11-14 04:02:30,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:02:30,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 04:02:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:02:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 04:02:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=2112, Unknown=7, NotChecked=0, Total=2450 [2024-11-14 04:02:30,849 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 04:02:33,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:02:33,964 INFO L93 Difference]: Finished difference Result 498 states and 603 transitions. [2024-11-14 04:02:33,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-14 04:02:33,965 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 04:02:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:02:33,967 INFO L225 Difference]: With dead ends: 498 [2024-11-14 04:02:33,967 INFO L226 Difference]: Without dead ends: 402 [2024-11-14 04:02:33,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 229 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=763, Invalid=4342, Unknown=7, NotChecked=0, Total=5112 [2024-11-14 04:02:33,970 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 653 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:02:33,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 657 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 04:02:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-14 04:02:34,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 220. [2024-11-14 04:02:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 182 states have (on average 1.1153846153846154) internal successors, (203), 188 states have internal predecessors, (203), 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 04:02:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 263 transitions. [2024-11-14 04:02:34,042 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 263 transitions. Word has length 92 [2024-11-14 04:02:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:02:34,042 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 263 transitions. [2024-11-14 04:02:34,042 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 04:02:34,042 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 263 transitions. [2024-11-14 04:02:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-14 04:02:34,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:02:34,044 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 04:02:34,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 04:02:34,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:02:34,245 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 04:02:34,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:02:34,245 INFO L85 PathProgramCache]: Analyzing trace with hash 831087290, now seen corresponding path program 1 times [2024-11-14 04:02:34,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:02:34,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358347027] [2024-11-14 04:02:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:34,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:02:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:34,563 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 04:02:34,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:02:34,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358347027] [2024-11-14 04:02:34,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358347027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:02:34,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381657948] [2024-11-14 04:02:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:34,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:02:34,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:02:34,566 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:02:34,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 04:02:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:34,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:02:34,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:02:35,023 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 04:02:35,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:02:38,906 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 04:02:38,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381657948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:02:38,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [242732613] [2024-11-14 04:02:38,910 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:02:38,910 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:02:38,910 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:02:38,910 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:02:38,910 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:02:41,077 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:02:41,078 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:03:06,979 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13320#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |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 04:03:06,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:03:06,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:03:06,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 20 [2024-11-14 04:03:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878104437] [2024-11-14 04:03:06,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:03:06,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 04:03:06,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:03:06,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 04:03:06,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1679, Unknown=9, NotChecked=0, Total=2070 [2024-11-14 04:03:06,981 INFO L87 Difference]: Start difference. First operand 220 states and 263 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 04:03:07,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:03:07,496 INFO L93 Difference]: Finished difference Result 310 states and 375 transitions. [2024-11-14 04:03:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:03:07,497 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 04:03:07,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:03:07,498 INFO L225 Difference]: With dead ends: 310 [2024-11-14 04:03:07,498 INFO L226 Difference]: Without dead ends: 309 [2024-11-14 04:03:07,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 236 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=455, Invalid=1986, Unknown=9, NotChecked=0, Total=2450 [2024-11-14 04:03:07,499 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 201 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:03:07,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 235 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:03:07,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-14 04:03:07,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 219. [2024-11-14 04:03:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 182 states have (on average 1.1043956043956045) internal successors, (201), 187 states have internal predecessors, (201), 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 04:03:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 261 transitions. [2024-11-14 04:03:07,567 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 261 transitions. Word has length 93 [2024-11-14 04:03:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:03:07,568 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 261 transitions. [2024-11-14 04:03:07,568 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 04:03:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 261 transitions. [2024-11-14 04:03:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-14 04:03:07,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:03:07,569 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 04:03:07,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-14 04:03:07,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:03:07,774 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 04:03:07,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:03:07,774 INFO L85 PathProgramCache]: Analyzing trace with hash -6097671, now seen corresponding path program 1 times [2024-11-14 04:03:07,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:03:07,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330098397] [2024-11-14 04:03:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:07,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:03:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:08,174 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 04:03:08,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:03:08,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330098397] [2024-11-14 04:03:08,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330098397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:03:08,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911051950] [2024-11-14 04:03:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:08,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:03:08,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:03:08,177 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:03:08,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 04:03:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:08,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:03:08,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:03:08,627 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 04:03:08,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:03:10,463 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 04:03:10,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911051950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:03:10,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [22670499] [2024-11-14 04:03:10,465 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:03:10,465 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:03:10,465 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:03:10,465 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:03:10,465 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:03:14,347 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:03:14,348 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:03:47,121 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14574#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-14 04:03:47,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:03:47,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:03:47,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2024-11-14 04:03:47,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995436787] [2024-11-14 04:03:47,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:03:47,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 04:03:47,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:03:47,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 04:03:47,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=1849, Unknown=11, NotChecked=0, Total=2256 [2024-11-14 04:03:47,124 INFO L87 Difference]: Start difference. First operand 219 states and 261 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 04:03:49,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:03:49,222 INFO L93 Difference]: Finished difference Result 509 states and 613 transitions. [2024-11-14 04:03:49,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 04:03:49,223 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 04:03:49,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:03:49,225 INFO L225 Difference]: With dead ends: 509 [2024-11-14 04:03:49,225 INFO L226 Difference]: Without dead ends: 445 [2024-11-14 04:03:49,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 240 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1609 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=614, Invalid=2681, Unknown=11, NotChecked=0, Total=3306 [2024-11-14 04:03:49,228 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 301 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:03:49,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 473 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 04:03:49,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-14 04:03:49,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 357. [2024-11-14 04:03:49,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 306 states have (on average 1.1143790849673203) internal successors, (341), 311 states have internal predecessors, (341), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-14 04:03:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 429 transitions. [2024-11-14 04:03:49,348 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 429 transitions. Word has length 94 [2024-11-14 04:03:49,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:03:49,348 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 429 transitions. [2024-11-14 04:03:49,348 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 04:03:49,349 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 429 transitions. [2024-11-14 04:03:49,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-14 04:03:49,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:03:49,355 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 04:03:49,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 04:03:49,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:03:49,559 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 04:03:49,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:03:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2124516296, now seen corresponding path program 3 times [2024-11-14 04:03:49,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:03:49,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009478010] [2024-11-14 04:03:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:03:49,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:03:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:03:50,148 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 04:03:50,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:03:50,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009478010] [2024-11-14 04:03:50,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009478010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:03:50,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387872872] [2024-11-14 04:03:50,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:03:50,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:03:50,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:03:50,152 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:03:50,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 04:03:50,284 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:03:50,285 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:03:50,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-14 04:03:50,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:03:51,641 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 04:03:51,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:03:57,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387872872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:03:57,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1394126794] [2024-11-14 04:03:57,201 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:03:57,201 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:03:57,201 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:03:57,201 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:03:57,201 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:03:59,020 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:03:59,021 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:04:09,680 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16023#(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|)) (<= |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|)) (<= |ULTIMATE.start_main_~A~0#1| 5) (<= 0 |ULTIMATE.start_main_~A~0#1|)))' at error location [2024-11-14 04:04:09,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:04:09,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:04:09,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 23 [2024-11-14 04:04:09,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710974203] [2024-11-14 04:04:09,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:04:09,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 04:04:09,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 04:04:09,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2426, Unknown=4, NotChecked=0, Total=2652 [2024-11-14 04:04:09,684 INFO L87 Difference]: Start difference. First operand 357 states and 429 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 04:04:12,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:12,482 INFO L93 Difference]: Finished difference Result 588 states and 720 transitions. [2024-11-14 04:04:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-14 04:04:12,483 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 04:04:12,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:12,486 INFO L225 Difference]: With dead ends: 588 [2024-11-14 04:04:12,486 INFO L226 Difference]: Without dead ends: 584 [2024-11-14 04:04:12,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 166 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=423, Invalid=4685, Unknown=4, NotChecked=0, Total=5112 [2024-11-14 04:04:12,489 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 304 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:12,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 516 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 04:04:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-14 04:04:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 480. [2024-11-14 04:04:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 415 states have (on average 1.1204819277108433) internal successors, (465), 420 states have internal predecessors, (465), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-14 04:04:12,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 581 transitions. [2024-11-14 04:04:12,641 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 581 transitions. Word has length 99 [2024-11-14 04:04:12,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:12,641 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 581 transitions. [2024-11-14 04:04:12,642 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 04:04:12,642 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 581 transitions. [2024-11-14 04:04:12,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-14 04:04:12,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:12,644 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 04:04:12,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-14 04:04:12,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-14 04:04:12,844 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 04:04:12,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash -16241027, now seen corresponding path program 1 times [2024-11-14 04:04:12,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:12,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602299059] [2024-11-14 04:04:12,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:12,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:13,230 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 04:04:13,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:13,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602299059] [2024-11-14 04:04:13,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602299059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:04:13,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492526699] [2024-11-14 04:04:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:13,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:13,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:13,235 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:13,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-14 04:04:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:13,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:04:13,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:13,712 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 04:04:13,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:04:13,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492526699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:13,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:04:13,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-11-14 04:04:13,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196210209] [2024-11-14 04:04:13,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:13,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:04:13,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:13,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:04:13,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:04:13,715 INFO L87 Difference]: Start difference. First operand 480 states and 581 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 04:04:14,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:14,028 INFO L93 Difference]: Finished difference Result 556 states and 668 transitions. [2024-11-14 04:04:14,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:04:14,028 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 04:04:14,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:14,030 INFO L225 Difference]: With dead ends: 556 [2024-11-14 04:04:14,030 INFO L226 Difference]: Without dead ends: 369 [2024-11-14 04:04:14,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:04:14,031 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 56 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:14,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 172 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:04:14,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-14 04:04:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 350. [2024-11-14 04:04:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 299 states have (on average 1.1237458193979932) internal successors, (336), 304 states have internal predecessors, (336), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-14 04:04:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 424 transitions. [2024-11-14 04:04:14,131 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 424 transitions. Word has length 105 [2024-11-14 04:04:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:14,131 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 424 transitions. [2024-11-14 04:04:14,131 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 04:04:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 424 transitions. [2024-11-14 04:04:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-14 04:04:14,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:14,132 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 04:04:14,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-14 04:04:14,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-14 04:04:14,333 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 04:04:14,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:14,333 INFO L85 PathProgramCache]: Analyzing trace with hash 922802609, now seen corresponding path program 2 times [2024-11-14 04:04:14,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:14,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645505524] [2024-11-14 04:04:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:14,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:04:14,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830911445] [2024-11-14 04:04:14,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:04:14,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:14,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:14,362 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:14,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 04:04:14,427 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 04:04:14,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:04:14,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 04:04:14,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:14,920 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 04:04:14,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:15,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:15,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645505524] [2024-11-14 04:04:15,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:04:15,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830911445] [2024-11-14 04:04:15,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830911445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:04:15,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [930457279] [2024-11-14 04:04:15,114 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-14 04:04:15,114 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:04:15,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:04:15,115 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:04:15,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:04:19,821 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:04:19,822 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:04:24,961 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19103#(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 04:04:24,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:04:24,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:04:24,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-14 04:04:24,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411081404] [2024-11-14 04:04:24,961 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:04:24,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:04:24,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:04:24,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1155, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 04:04:24,963 INFO L87 Difference]: Start difference. First operand 350 states and 424 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 04:04:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:25,711 INFO L93 Difference]: Finished difference Result 371 states and 453 transitions. [2024-11-14 04:04:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:04:25,712 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 04:04:25,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:25,714 INFO L225 Difference]: With dead ends: 371 [2024-11-14 04:04:25,714 INFO L226 Difference]: Without dead ends: 370 [2024-11-14 04:04:25,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 176 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=410, Invalid=1752, Unknown=0, NotChecked=0, Total=2162 [2024-11-14 04:04:25,717 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 69 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:25,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 173 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:04:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-14 04:04:25,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 362. [2024-11-14 04:04:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 307 states have (on average 1.1270358306188926) internal successors, (346), 312 states have internal predecessors, (346), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-14 04:04:25,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 442 transitions. [2024-11-14 04:04:25,858 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 442 transitions. Word has length 105 [2024-11-14 04:04:25,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:25,859 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 442 transitions. [2024-11-14 04:04:25,859 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 04:04:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 442 transitions. [2024-11-14 04:04:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-14 04:04:25,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:25,863 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 04:04:25,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-14 04:04:26,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-14 04:04:26,067 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 04:04:26,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1457890068, now seen corresponding path program 1 times [2024-11-14 04:04:26,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:26,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436908999] [2024-11-14 04:04:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:26,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:04:26,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952435995] [2024-11-14 04:04:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:26,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:26,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:26,107 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:26,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 04:04:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:26,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-14 04:04:26,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:27,040 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 04:04:27,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:28,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:28,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436908999] [2024-11-14 04:04:28,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:04:28,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952435995] [2024-11-14 04:04:28,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952435995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:04:28,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [757861592] [2024-11-14 04:04:28,958 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-14 04:04:28,958 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:04:28,959 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:04:28,959 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:04:28,959 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:04:30,938 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 04:04:31,042 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 04:04:33,936 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:04:33,937 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:04:38,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [757861592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:04:38,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:04:38,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [14] total 40 [2024-11-14 04:04:38,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570559859] [2024-11-14 04:04:38,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:04:38,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-14 04:04:38,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:04:38,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-14 04:04:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1688, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 04:04:38,184 INFO L87 Difference]: Start difference. First operand 362 states and 442 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 04:04:42,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-14 04:04:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:04:43,428 INFO L93 Difference]: Finished difference Result 363 states and 443 transitions. [2024-11-14 04:04:43,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-14 04:04:43,428 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 04:04:43,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:04:43,431 INFO L225 Difference]: With dead ends: 363 [2024-11-14 04:04:43,431 INFO L226 Difference]: Without dead ends: 352 [2024-11-14 04:04:43,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=726, Invalid=2696, Unknown=0, NotChecked=0, Total=3422 [2024-11-14 04:04:43,433 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 199 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 99 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:04:43,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 62 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 457 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2024-11-14 04:04:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-14 04:04:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 331. [2024-11-14 04:04:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 285 states have (on average 1.0771929824561404) internal successors, (307), 287 states have internal predecessors, (307), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-14 04:04:43,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 391 transitions. [2024-11-14 04:04:43,542 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 391 transitions. Word has length 106 [2024-11-14 04:04:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:04:43,543 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 391 transitions. [2024-11-14 04:04:43,543 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 04:04:43,543 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 391 transitions. [2024-11-14 04:04:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-14 04:04:43,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:04:43,544 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 04:04:43,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-14 04:04:43,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-14 04:04:43,745 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 04:04:43,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:04:43,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1296303017, now seen corresponding path program 4 times [2024-11-14 04:04:43,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:04:43,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479127169] [2024-11-14 04:04:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:04:43,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:04:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:44,337 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 04:04:44,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:04:44,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479127169] [2024-11-14 04:04:44,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479127169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:04:44,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258934538] [2024-11-14 04:04:44,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 04:04:44,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:04:44,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:04:44,342 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:04:44,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 04:04:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:04:44,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:04:44,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:04:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 54 proven. 29 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-14 04:04:45,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:04:45,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258934538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:04:45,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [219087937] [2024-11-14 04:04:45,788 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:04:45,788 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:04:45,788 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:04:45,788 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:04:45,788 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:04:49,725 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:04:49,726 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:05:35,192 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21311#true' at error location [2024-11-14 04:05:35,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:05:35,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:05:35,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2024-11-14 04:05:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733036196] [2024-11-14 04:05:35,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:05:35,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 04:05:35,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:05:35,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 04:05:35,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=2040, Unknown=20, NotChecked=0, Total=2352 [2024-11-14 04:05:35,195 INFO L87 Difference]: Start difference. First operand 331 states and 391 transitions. Second operand has 21 states, 20 states have (on average 6.85) internal successors, (137), 21 states have internal predecessors, (137), 10 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-14 04:05:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:05:37,248 INFO L93 Difference]: Finished difference Result 472 states and 558 transitions. [2024-11-14 04:05:37,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-14 04:05:37,249 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 6.85) internal successors, (137), 21 states have internal predecessors, (137), 10 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) Word has length 116 [2024-11-14 04:05:37,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:05:37,251 INFO L225 Difference]: With dead ends: 472 [2024-11-14 04:05:37,252 INFO L226 Difference]: Without dead ends: 427 [2024-11-14 04:05:37,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 207 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 46.9s TimeCoverageRelationStatistics Valid=461, Invalid=3679, Unknown=20, NotChecked=0, Total=4160 [2024-11-14 04:05:37,254 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 271 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:05:37,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 612 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 04:05:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-14 04:05:37,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 375. [2024-11-14 04:05:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 323 states have (on average 1.0804953560371517) internal successors, (349), 325 states have internal predecessors, (349), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-14 04:05:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 445 transitions. [2024-11-14 04:05:37,411 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 445 transitions. Word has length 116 [2024-11-14 04:05:37,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:05:37,412 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 445 transitions. [2024-11-14 04:05:37,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 6.85) internal successors, (137), 21 states have internal predecessors, (137), 10 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-14 04:05:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 445 transitions. [2024-11-14 04:05:37,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-14 04:05:37,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:05:37,414 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 04:05:37,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-14 04:05:37,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:05:37,614 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:05:37,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:05:37,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1525025616, now seen corresponding path program 1 times [2024-11-14 04:05:37,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:05:37,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806927328] [2024-11-14 04:05:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:37,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:05:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:38,399 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 04:05:38,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:05:38,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806927328] [2024-11-14 04:05:38,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806927328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:05:38,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837591462] [2024-11-14 04:05:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:05:38,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:05:38,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:05:38,402 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:05:38,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 04:05:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:05:38,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 04:05:38,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:05:39,332 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 04:05:39,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:05:45,661 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 04:05:45,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837591462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:05:45,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [629920102] [2024-11-14 04:05:45,663 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:05:45,663 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:05:45,663 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:05:45,663 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:05:45,664 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:05:50,577 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:05:50,578 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:05:56,107 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23602#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-14 04:05:56,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:05:56,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:05:56,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 8] total 30 [2024-11-14 04:05:56,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365607713] [2024-11-14 04:05:56,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:05:56,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-14 04:05:56,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:05:56,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-14 04:05:56,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=2550, Unknown=0, NotChecked=0, Total=3080 [2024-11-14 04:05:56,111 INFO L87 Difference]: Start difference. First operand 375 states and 445 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 04:06:00,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:00,035 INFO L93 Difference]: Finished difference Result 960 states and 1144 transitions. [2024-11-14 04:06:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 04:06:00,036 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 04:06:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:00,039 INFO L225 Difference]: With dead ends: 960 [2024-11-14 04:06:00,039 INFO L226 Difference]: Without dead ends: 959 [2024-11-14 04:06:00,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 341 SyntacticMatches, 6 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2405 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=946, Invalid=4024, Unknown=0, NotChecked=0, Total=4970 [2024-11-14 04:06:00,041 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 396 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:00,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 624 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 04:06:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-11-14 04:06:00,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 745. [2024-11-14 04:06:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 649 states have (on average 1.0832049306625577) internal successors, (703), 651 states have internal predecessors, (703), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-14 04:06:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 887 transitions. [2024-11-14 04:06:00,386 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 887 transitions. Word has length 130 [2024-11-14 04:06:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:00,387 INFO L471 AbstractCegarLoop]: Abstraction has 745 states and 887 transitions. [2024-11-14 04:06:00,387 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 04:06:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 887 transitions. [2024-11-14 04:06:00,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-14 04:06:00,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:00,389 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 04:06:00,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-14 04:06:00,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-14 04:06:00,590 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:06:00,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash -573229902, now seen corresponding path program 1 times [2024-11-14 04:06:00,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:00,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065119327] [2024-11-14 04:06:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:00,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:01,430 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 04:06:01,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:01,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065119327] [2024-11-14 04:06:01,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065119327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:01,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428923283] [2024-11-14 04:06:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:01,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:01,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:01,433 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:01,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-14 04:06:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:01,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 04:06:01,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 15 proven. 132 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-14 04:06:03,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:03,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428923283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:03,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [811901092] [2024-11-14 04:06:03,834 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:06:03,834 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:06:03,834 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:06:03,835 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:06:03,835 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:06:07,819 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:06:07,820 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:06:18,084 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25676#true' at error location [2024-11-14 04:06:18,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:06:18,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:06:18,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 29 [2024-11-14 04:06:18,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704490806] [2024-11-14 04:06:18,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:06:18,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-14 04:06:18,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:18,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-14 04:06:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=2845, Unknown=0, NotChecked=0, Total=3192 [2024-11-14 04:06:18,087 INFO L87 Difference]: Start difference. First operand 745 states and 887 transitions. Second operand has 30 states, 29 states have (on average 6.241379310344827) internal successors, (181), 30 states have internal predecessors, (181), 14 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) [2024-11-14 04:06:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:20,107 INFO L93 Difference]: Finished difference Result 754 states and 896 transitions. [2024-11-14 04:06:20,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 04:06:20,108 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 6.241379310344827) internal successors, (181), 30 states have internal predecessors, (181), 14 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) Word has length 141 [2024-11-14 04:06:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:20,111 INFO L225 Difference]: With dead ends: 754 [2024-11-14 04:06:20,111 INFO L226 Difference]: Without dead ends: 753 [2024-11-14 04:06:20,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 241 SyntacticMatches, 17 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=638, Invalid=4618, Unknown=0, NotChecked=0, Total=5256 [2024-11-14 04:06:20,113 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 309 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:20,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 555 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 04:06:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-14 04:06:20,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 600. [2024-11-14 04:06:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 520 states have (on average 1.0807692307692307) internal successors, (562), 522 states have internal predecessors, (562), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-14 04:06:20,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 714 transitions. [2024-11-14 04:06:20,313 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 714 transitions. Word has length 141 [2024-11-14 04:06:20,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:20,314 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 714 transitions. [2024-11-14 04:06:20,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 6.241379310344827) internal successors, (181), 30 states have internal predecessors, (181), 14 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) [2024-11-14 04:06:20,315 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 714 transitions. [2024-11-14 04:06:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-14 04:06:20,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:20,317 INFO L215 NwaCegarLoop]: trace histogram [20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-14 04:06:20,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-14 04:06:20,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-14 04:06:20,522 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:06:20,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:20,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1841167034, now seen corresponding path program 1 times [2024-11-14 04:06:20,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:20,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707380293] [2024-11-14 04:06:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-11-14 04:06:21,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:21,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707380293] [2024-11-14 04:06:21,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707380293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:21,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041638403] [2024-11-14 04:06:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:21,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:21,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:21,155 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:21,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 04:06:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:21,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 04:06:21,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 84 proven. 47 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-11-14 04:06:22,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 17 proven. 114 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-11-14 04:06:23,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041638403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:06:23,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [817020279] [2024-11-14 04:06:23,466 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:06:23,466 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:06:23,466 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:06:23,466 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:06:23,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:06:28,022 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:06:28,023 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:06:34,287 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27842#true' at error location [2024-11-14 04:06:34,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:06:34,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:06:34,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 25 [2024-11-14 04:06:34,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997288031] [2024-11-14 04:06:34,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:06:34,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 04:06:34,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 04:06:34,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2155, Unknown=0, NotChecked=0, Total=2550 [2024-11-14 04:06:34,290 INFO L87 Difference]: Start difference. First operand 600 states and 714 transitions. Second operand has 26 states, 25 states have (on average 8.76) internal successors, (219), 26 states have internal predecessors, (219), 16 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 16 states have call predecessors, (47), 16 states have call successors, (47) [2024-11-14 04:06:37,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:06:37,001 INFO L93 Difference]: Finished difference Result 866 states and 1027 transitions. [2024-11-14 04:06:37,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-14 04:06:37,002 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 8.76) internal successors, (219), 26 states have internal predecessors, (219), 16 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 16 states have call predecessors, (47), 16 states have call successors, (47) Word has length 147 [2024-11-14 04:06:37,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:06:37,004 INFO L225 Difference]: With dead ends: 866 [2024-11-14 04:06:37,004 INFO L226 Difference]: Without dead ends: 865 [2024-11-14 04:06:37,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 391 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2425 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1025, Invalid=5295, Unknown=0, NotChecked=0, Total=6320 [2024-11-14 04:06:37,006 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 554 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:06:37,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1136 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 04:06:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2024-11-14 04:06:37,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 583. [2024-11-14 04:06:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 506 states have (on average 1.0711462450592886) internal successors, (542), 507 states have internal predecessors, (542), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-14 04:06:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 690 transitions. [2024-11-14 04:06:37,188 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 690 transitions. Word has length 147 [2024-11-14 04:06:37,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:06:37,188 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 690 transitions. [2024-11-14 04:06:37,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 8.76) internal successors, (219), 26 states have internal predecessors, (219), 16 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 16 states have call predecessors, (47), 16 states have call successors, (47) [2024-11-14 04:06:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 690 transitions. [2024-11-14 04:06:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-14 04:06:37,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:06:37,190 INFO L215 NwaCegarLoop]: trace histogram [20, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-14 04:06:37,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-14 04:06:37,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:37,395 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 04:06:37,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:06:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1355789143, now seen corresponding path program 2 times [2024-11-14 04:06:37,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:06:37,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592606609] [2024-11-14 04:06:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:06:37,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:06:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:06:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-11-14 04:06:38,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:06:38,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592606609] [2024-11-14 04:06:38,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592606609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:38,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579524020] [2024-11-14 04:06:38,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:06:38,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:06:38,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:38,033 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:06:38,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-14 04:06:38,118 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 04:06:38,119 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:06:38,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 04:06:38,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:06:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 83 proven. 5 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2024-11-14 04:06:39,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:06:42,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579524020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:06:42,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [698701164] [2024-11-14 04:06:42,899 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:06:42,899 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:06:42,899 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:06:42,899 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:06:42,899 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:06:46,415 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:06:46,416 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:06:57,458 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30547#true' at error location [2024-11-14 04:06:57,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:06:57,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:06:57,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2024-11-14 04:06:57,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509865989] [2024-11-14 04:06:57,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:06:57,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 04:06:57,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:06:57,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 04:06:57,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2473, Unknown=0, NotChecked=0, Total=2862 [2024-11-14 04:06:57,460 INFO L87 Difference]: Start difference. First operand 583 states and 690 transitions. Second operand has 24 states, 22 states have (on average 5.818181818181818) internal successors, (128), 23 states have internal predecessors, (128), 6 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-14 04:07:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:07:02,206 INFO L93 Difference]: Finished difference Result 921 states and 1084 transitions. [2024-11-14 04:07:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-14 04:07:02,206 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.818181818181818) internal successors, (128), 23 states have internal predecessors, (128), 6 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 154 [2024-11-14 04:07:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:07:02,207 INFO L225 Difference]: With dead ends: 921 [2024-11-14 04:07:02,207 INFO L226 Difference]: Without dead ends: 284 [2024-11-14 04:07:02,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 267 SyntacticMatches, 16 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3689 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=1592, Invalid=8710, Unknown=0, NotChecked=0, Total=10302 [2024-11-14 04:07:02,209 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 265 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:07:02,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 462 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 04:07:02,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-14 04:07:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 226. [2024-11-14 04:07:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 193 states have (on average 1.0414507772020725) internal successors, (201), 193 states have internal predecessors, (201), 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 04:07:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 263 transitions. [2024-11-14 04:07:02,318 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 263 transitions. Word has length 154 [2024-11-14 04:07:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:07:02,319 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 263 transitions. [2024-11-14 04:07:02,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.818181818181818) internal successors, (128), 23 states have internal predecessors, (128), 6 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-14 04:07:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 263 transitions. [2024-11-14 04:07:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-14 04:07:02,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:07:02,320 INFO L215 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-14 04:07:02,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-14 04:07:02,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-14 04:07:02,525 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-11-14 04:07:02,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:07:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash -419300059, now seen corresponding path program 2 times [2024-11-14 04:07:02,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:07:02,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435996274] [2024-11-14 04:07:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:02,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 14 proven. 190 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2024-11-14 04:07:03,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435996274] [2024-11-14 04:07:03,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435996274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:07:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739629973] [2024-11-14 04:07:03,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:07:03,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:07:03,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:07:03,314 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:07:03,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-14 04:07:03,377 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-14 04:07:03,378 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:07:03,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 04:07:03,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:07:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 56 proven. 53 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2024-11-14 04:07:04,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:07:04,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739629973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:07:04,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1041545730] [2024-11-14 04:07:04,809 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-14 04:07:04,809 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:07:04,809 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:07:04,809 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:07:04,809 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:07:08,924 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-14 04:07:08,925 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:07:55,342 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33138#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2024-11-14 04:07:55,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:07:55,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:07:55,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 25 [2024-11-14 04:07:55,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731375075] [2024-11-14 04:07:55,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:07:55,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 04:07:55,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:07:55,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 04:07:55,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=2408, Unknown=20, NotChecked=0, Total=2862 [2024-11-14 04:07:55,344 INFO L87 Difference]: Start difference. First operand 226 states and 263 transitions. Second operand has 26 states, 24 states have (on average 6.291666666666667) internal successors, (151), 26 states have internal predecessors, (151), 9 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-14 04:07:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:07:56,347 INFO L93 Difference]: Finished difference Result 241 states and 280 transitions. [2024-11-14 04:07:56,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:07:56,348 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 6.291666666666667) internal successors, (151), 26 states have internal predecessors, (151), 9 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 163 [2024-11-14 04:07:56,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:07:56,349 INFO L225 Difference]: With dead ends: 241 [2024-11-14 04:07:56,349 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 04:07:56,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 296 SyntacticMatches, 10 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 47.5s TimeCoverageRelationStatistics Valid=676, Invalid=3210, Unknown=20, NotChecked=0, Total=3906 [2024-11-14 04:07:56,351 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 216 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:07:56,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 147 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:07:56,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 04:07:56,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 04:07:56,352 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 04:07:56,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 04:07:56,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 163 [2024-11-14 04:07:56,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:07:56,353 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 04:07:56,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 6.291666666666667) internal successors, (151), 26 states have internal predecessors, (151), 9 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-14 04:07:56,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 04:07:56,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 04:07:56,357 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2024-11-14 04:07:56,357 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2024-11-14 04:07:56,357 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2024-11-14 04:07:56,358 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2024-11-14 04:07:56,358 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2024-11-14 04:07:56,358 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2024-11-14 04:07:56,358 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2024-11-14 04:07:56,358 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2024-11-14 04:07:56,358 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2024-11-14 04:07:56,358 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2024-11-14 04:07:56,358 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2024-11-14 04:07:56,358 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2024-11-14 04:07:56,358 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2024-11-14 04:07:56,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2024-11-14 04:07:56,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2024-11-14 04:07:56,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2024-11-14 04:07:56,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2024-11-14 04:07:56,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2024-11-14 04:07:56,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2024-11-14 04:07:56,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2024-11-14 04:07:56,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2024-11-14 04:07:56,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2024-11-14 04:07:56,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2024-11-14 04:07:56,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2024-11-14 04:07:56,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-14 04:07:56,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c5c3a-2463-4430-be26-d87d8bce3435/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-14 04:07:56,563 INFO L407 BasicCegarLoop]: Path program histogram: [4, 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 04:07:56,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.