./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-lit/hh2012-ex3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/hh2012-ex3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX --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 3c7177334f88b94ca4ee99044935e396702561856a6f48616f98f91aafc609bb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:10:34,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:10:34,220 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:10:34,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:10:34,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:10:34,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:10:34,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:10:34,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:10:34,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:10:34,281 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:10:34,281 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:10:34,282 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:10:34,282 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:10:34,284 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:10:34,285 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:10:34,285 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:10:34,286 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:10:34,286 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:10:34,287 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:10:34,287 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:10:34,288 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:10:34,289 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:10:34,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:10:34,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:10:34,291 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:10:34,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:10:34,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:10:34,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:10:34,293 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:10:34,293 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:10:34,295 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:10:34,295 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:10:34,295 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:10:34,296 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:10:34,296 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:10:34,296 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:10:34,297 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:10:34,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:10:34,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:10:34,298 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:10:34,298 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:10:34,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:10:34,299 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:10:34,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:10:34,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:10:34,300 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:10:34,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:10:34,301 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c7177334f88b94ca4ee99044935e396702561856a6f48616f98f91aafc609bb [2023-11-12 00:10:34,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:10:34,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:10:34,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:10:34,632 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:10:34,633 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:10:34,634 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/loop-lit/hh2012-ex3.i [2023-11-12 00:10:37,746 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:10:38,023 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:10:38,024 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/sv-benchmarks/c/loop-lit/hh2012-ex3.i [2023-11-12 00:10:38,032 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/data/463062b75/c1a5027b2a744edeaa61e76c465d205f/FLAG70bdbc9ce [2023-11-12 00:10:38,050 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/data/463062b75/c1a5027b2a744edeaa61e76c465d205f [2023-11-12 00:10:38,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:10:38,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:10:38,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:10:38,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:10:38,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:10:38,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4cdddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38, skipping insertion in model container [2023-11-12 00:10:38,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,097 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:10:38,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:10:38,299 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:10:38,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:10:38,331 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:10:38,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38 WrapperNode [2023-11-12 00:10:38,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:10:38,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:10:38,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:10:38,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:10:38,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,370 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-11-12 00:10:38,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:10:38,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:10:38,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:10:38,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:10:38,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,385 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,388 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,412 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,413 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:10:38,416 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:10:38,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:10:38,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:10:38,419 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38" (1/1) ... [2023-11-12 00:10:38,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:10:38,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:38,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:10:38,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:10:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:10:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:10:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:10:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:10:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:10:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:10:38,609 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:10:38,613 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:10:38,913 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:10:38,948 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:10:38,949 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:10:38,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:10:38 BoogieIcfgContainer [2023-11-12 00:10:38,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:10:38,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:10:38,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:10:38,960 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:10:38,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:10:38" (1/3) ... [2023-11-12 00:10:38,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67597f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:10:38, skipping insertion in model container [2023-11-12 00:10:38,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:10:38" (2/3) ... [2023-11-12 00:10:38,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67597f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:10:38, skipping insertion in model container [2023-11-12 00:10:38,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:10:38" (3/3) ... [2023-11-12 00:10:38,964 INFO L112 eAbstractionObserver]: Analyzing ICFG hh2012-ex3.i [2023-11-12 00:10:38,991 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:10:38,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-12 00:10:39,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:10:39,061 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@22b8efca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:10:39,061 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-12 00:10:39,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 16 states have (on average 1.875) internal successors, (30), 29 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:10:39,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:10:39,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:39,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:10:39,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:39,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:39,086 INFO L85 PathProgramCache]: Analyzing trace with hash 3854251, now seen corresponding path program 1 times [2023-11-12 00:10:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:39,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431840732] [2023-11-12 00:10:39,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:39,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:39,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:39,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431840732] [2023-11-12 00:10:39,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431840732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:39,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:39,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:39,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659168244] [2023-11-12 00:10:39,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:39,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:39,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:39,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:39,432 INFO L87 Difference]: Start difference. First operand has 38 states, 16 states have (on average 1.875) internal successors, (30), 29 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:39,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:39,552 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2023-11-12 00:10:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:10:39,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:10:39,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:39,566 INFO L225 Difference]: With dead ends: 72 [2023-11-12 00:10:39,567 INFO L226 Difference]: Without dead ends: 70 [2023-11-12 00:10:39,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:39,578 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 25 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:39,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 88 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-12 00:10:39,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 49. [2023-11-12 00:10:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 37 states have internal predecessors, (43), 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) [2023-11-12 00:10:39,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2023-11-12 00:10:39,656 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 4 [2023-11-12 00:10:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:39,658 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2023-11-12 00:10:39,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2023-11-12 00:10:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:10:39,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:39,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:10:39,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:10:39,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:39,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:39,663 INFO L85 PathProgramCache]: Analyzing trace with hash 119481835, now seen corresponding path program 1 times [2023-11-12 00:10:39,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:39,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12731936] [2023-11-12 00:10:39,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:39,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:39,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:39,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12731936] [2023-11-12 00:10:39,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12731936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:39,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:39,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:10:39,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811878717] [2023-11-12 00:10:39,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:39,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:39,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:39,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:39,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:39,775 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:39,880 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2023-11-12 00:10:39,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:10:39,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:10:39,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:39,888 INFO L225 Difference]: With dead ends: 69 [2023-11-12 00:10:39,888 INFO L226 Difference]: Without dead ends: 68 [2023-11-12 00:10:39,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:39,896 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 14 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:39,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 89 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:39,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-12 00:10:39,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2023-11-12 00:10:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 39 states have internal predecessors, (47), 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) [2023-11-12 00:10:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2023-11-12 00:10:39,915 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 5 [2023-11-12 00:10:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:39,915 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2023-11-12 00:10:39,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:39,916 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2023-11-12 00:10:39,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:10:39,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:39,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:10:39,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:10:39,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:39,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:39,918 INFO L85 PathProgramCache]: Analyzing trace with hash -591030355, now seen corresponding path program 1 times [2023-11-12 00:10:39,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:39,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191809934] [2023-11-12 00:10:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:39,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:10:39,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:39,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191809934] [2023-11-12 00:10:39,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191809934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:39,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:39,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:10:39,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048280940] [2023-11-12 00:10:39,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:39,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:39,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:39,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:39,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:39,993 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:40,061 INFO L93 Difference]: Finished difference Result 97 states and 129 transitions. [2023-11-12 00:10:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:40,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 00:10:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:40,063 INFO L225 Difference]: With dead ends: 97 [2023-11-12 00:10:40,063 INFO L226 Difference]: Without dead ends: 61 [2023-11-12 00:10:40,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:40,066 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:40,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 98 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-12 00:10:40,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2023-11-12 00:10:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 45 states have internal predecessors, (55), 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) [2023-11-12 00:10:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2023-11-12 00:10:40,079 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 6 [2023-11-12 00:10:40,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:40,080 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2023-11-12 00:10:40,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:10:40,080 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2023-11-12 00:10:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 00:10:40,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:40,081 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:40,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:10:40,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:40,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:40,083 INFO L85 PathProgramCache]: Analyzing trace with hash 222113613, now seen corresponding path program 1 times [2023-11-12 00:10:40,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:40,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753018431] [2023-11-12 00:10:40,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:40,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:10:40,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:40,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753018431] [2023-11-12 00:10:40,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753018431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:40,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:40,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:10:40,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509693892] [2023-11-12 00:10:40,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:40,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:10:40,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:40,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:10:40,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:40,218 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2023-11-12 00:10:40,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:40,327 INFO L93 Difference]: Finished difference Result 88 states and 122 transitions. [2023-11-12 00:10:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:10:40,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 14 [2023-11-12 00:10:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:40,331 INFO L225 Difference]: With dead ends: 88 [2023-11-12 00:10:40,331 INFO L226 Difference]: Without dead ends: 86 [2023-11-12 00:10:40,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:10:40,333 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:40,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 84 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:40,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-12 00:10:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2023-11-12 00:10:40,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 46 states have internal predecessors, (56), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:10:40,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2023-11-12 00:10:40,349 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 14 [2023-11-12 00:10:40,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:40,349 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2023-11-12 00:10:40,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2023-11-12 00:10:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2023-11-12 00:10:40,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:10:40,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:40,351 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:40,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:10:40,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:40,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1704412525, now seen corresponding path program 1 times [2023-11-12 00:10:40,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:40,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621581190] [2023-11-12 00:10:40,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:40,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:10:40,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621581190] [2023-11-12 00:10:40,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621581190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:40,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:40,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:10:40,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817619068] [2023-11-12 00:10:40,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:40,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:10:40,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:40,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:10:40,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:40,462 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2023-11-12 00:10:40,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:40,596 INFO L93 Difference]: Finished difference Result 129 states and 174 transitions. [2023-11-12 00:10:40,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:10:40,597 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), 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 15 [2023-11-12 00:10:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:40,599 INFO L225 Difference]: With dead ends: 129 [2023-11-12 00:10:40,600 INFO L226 Difference]: Without dead ends: 86 [2023-11-12 00:10:40,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:10:40,603 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 16 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:40,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 98 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:40,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-12 00:10:40,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2023-11-12 00:10:40,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 40 states have (on average 1.5) internal successors, (60), 50 states have internal predecessors, (60), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 00:10:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2023-11-12 00:10:40,631 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 15 [2023-11-12 00:10:40,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:40,632 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2023-11-12 00:10:40,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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) [2023-11-12 00:10:40,632 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2023-11-12 00:10:40,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-12 00:10:40,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:40,634 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:40,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:10:40,635 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:40,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:40,637 INFO L85 PathProgramCache]: Analyzing trace with hash -738362147, now seen corresponding path program 1 times [2023-11-12 00:10:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:40,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539055711] [2023-11-12 00:10:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 00:10:40,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:40,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539055711] [2023-11-12 00:10:40,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539055711] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:40,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374603636] [2023-11-12 00:10:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:40,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:40,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:40,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:40,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:10:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:40,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:10:40,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 00:10:40,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 00:10:40,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374603636] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:40,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1786533771] [2023-11-12 00:10:41,010 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-11-12 00:10:41,011 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:41,016 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:41,024 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:41,025 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:10:42,628 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-12 00:10:42,631 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:10:43,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1786533771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:43,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:10:43,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 5, 5] total 19 [2023-11-12 00:10:43,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390996935] [2023-11-12 00:10:43,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:43,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 00:10:43,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:43,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 00:10:43,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:10:43,132 INFO L87 Difference]: Start difference. First operand 72 states and 100 transitions. Second operand has 12 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 9 states have internal predecessors, (11), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 00:10:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:43,871 INFO L93 Difference]: Finished difference Result 92 states and 119 transitions. [2023-11-12 00:10:43,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:10:43,871 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 9 states have internal predecessors, (11), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2023-11-12 00:10:43,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:43,872 INFO L225 Difference]: With dead ends: 92 [2023-11-12 00:10:43,873 INFO L226 Difference]: Without dead ends: 82 [2023-11-12 00:10:43,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2023-11-12 00:10:43,874 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:43,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 53 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:10:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-12 00:10:43,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-12 00:10:43,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 46 states have (on average 1.326086956521739) internal successors, (61), 56 states have internal predecessors, (61), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-12 00:10:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 109 transitions. [2023-11-12 00:10:43,903 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 109 transitions. Word has length 24 [2023-11-12 00:10:43,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:43,904 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 109 transitions. [2023-11-12 00:10:43,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 9 states have internal predecessors, (11), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 00:10:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 109 transitions. [2023-11-12 00:10:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-12 00:10:43,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:43,910 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 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] [2023-11-12 00:10:43,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:10:44,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:44,117 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:44,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:44,117 INFO L85 PathProgramCache]: Analyzing trace with hash -740755265, now seen corresponding path program 1 times [2023-11-12 00:10:44,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:44,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800574913] [2023-11-12 00:10:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:44,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-12 00:10:44,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:44,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800574913] [2023-11-12 00:10:44,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800574913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:44,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318957660] [2023-11-12 00:10:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:44,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:44,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:44,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:44,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:10:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:44,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:10:44,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 70 proven. 13 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-12 00:10:44,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-12 00:10:44,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318957660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:44,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [985031530] [2023-11-12 00:10:44,623 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-12 00:10:44,624 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:44,624 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:44,625 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:44,625 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:10:46,023 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-12 00:10:46,025 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:10:46,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [985031530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:46,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:10:46,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7, 7, 7] total 22 [2023-11-12 00:10:46,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361788157] [2023-11-12 00:10:46,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:46,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 00:10:46,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:46,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 00:10:46,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-11-12 00:10:46,448 INFO L87 Difference]: Start difference. First operand 82 states and 109 transitions. Second operand has 13 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-12 00:10:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:47,002 INFO L93 Difference]: Finished difference Result 83 states and 109 transitions. [2023-11-12 00:10:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:10:47,002 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 62 [2023-11-12 00:10:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:47,004 INFO L225 Difference]: With dead ends: 83 [2023-11-12 00:10:47,004 INFO L226 Difference]: Without dead ends: 75 [2023-11-12 00:10:47,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 164 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2023-11-12 00:10:47,006 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:47,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 8 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:10:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-12 00:10:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 64. [2023-11-12 00:10:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.15) internal successors, (46), 42 states have internal predecessors, (46), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 00:10:47,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2023-11-12 00:10:47,039 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 62 [2023-11-12 00:10:47,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:47,041 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2023-11-12 00:10:47,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 11 states have internal predecessors, (18), 5 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-12 00:10:47,041 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2023-11-12 00:10:47,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-12 00:10:47,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:47,043 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 3, 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] [2023-11-12 00:10:47,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:10:47,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:47,249 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:47,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:47,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1488576681, now seen corresponding path program 1 times [2023-11-12 00:10:47,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:47,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453376417] [2023-11-12 00:10:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:47,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-12 00:10:47,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:47,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453376417] [2023-11-12 00:10:47,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453376417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:47,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:47,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:10:47,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801717360] [2023-11-12 00:10:47,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:47,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:47,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:47,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:47,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:47,333 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 00:10:47,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:47,373 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2023-11-12 00:10:47,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:47,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 63 [2023-11-12 00:10:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:47,375 INFO L225 Difference]: With dead ends: 65 [2023-11-12 00:10:47,375 INFO L226 Difference]: Without dead ends: 64 [2023-11-12 00:10:47,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:47,377 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:47,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 83 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:47,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-12 00:10:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-12 00:10:47,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 00:10:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 85 transitions. [2023-11-12 00:10:47,391 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 85 transitions. Word has length 63 [2023-11-12 00:10:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:47,392 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 85 transitions. [2023-11-12 00:10:47,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 00:10:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 85 transitions. [2023-11-12 00:10:47,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-12 00:10:47,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:47,394 INFO L195 NwaCegarLoop]: trace histogram [16, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:47,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:10:47,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:47,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:47,396 INFO L85 PathProgramCache]: Analyzing trace with hash 669012977, now seen corresponding path program 2 times [2023-11-12 00:10:47,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:47,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820062998] [2023-11-12 00:10:47,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:47,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 31 proven. 13 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-12 00:10:47,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:47,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820062998] [2023-11-12 00:10:47,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820062998] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:47,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006942208] [2023-11-12 00:10:47,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:10:47,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:47,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:47,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:47,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:10:47,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 00:10:47,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:10:47,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:10:47,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-11-12 00:10:47,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-11-12 00:10:47,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006942208] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:47,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [713663058] [2023-11-12 00:10:47,854 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-12 00:10:47,854 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:47,855 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:47,855 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:47,855 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:10:49,052 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-12 00:10:49,054 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:10:49,574 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2790#(and (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_#t~post1#1|) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-12 00:10:49,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:10:49,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:10:49,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-11-12 00:10:49,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660336992] [2023-11-12 00:10:49,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:10:49,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:10:49,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:49,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:10:49,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2023-11-12 00:10:49,578 INFO L87 Difference]: Start difference. First operand 64 states and 85 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 6 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-12 00:10:49,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:49,951 INFO L93 Difference]: Finished difference Result 163 states and 225 transitions. [2023-11-12 00:10:49,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:10:49,951 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 6 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 82 [2023-11-12 00:10:49,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:49,953 INFO L225 Difference]: With dead ends: 163 [2023-11-12 00:10:49,954 INFO L226 Difference]: Without dead ends: 124 [2023-11-12 00:10:49,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 220 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=1139, Unknown=0, NotChecked=0, Total=1332 [2023-11-12 00:10:49,956 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:49,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 232 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:10:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-12 00:10:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 99. [2023-11-12 00:10:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 63 states have (on average 1.126984126984127) internal successors, (71), 65 states have internal predecessors, (71), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-12 00:10:49,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 135 transitions. [2023-11-12 00:10:49,975 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 135 transitions. Word has length 82 [2023-11-12 00:10:49,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:49,976 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 135 transitions. [2023-11-12 00:10:49,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 6 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2023-11-12 00:10:49,977 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 135 transitions. [2023-11-12 00:10:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-12 00:10:49,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:49,979 INFO L195 NwaCegarLoop]: trace histogram [24, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:49,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 00:10:50,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:50,185 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:50,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:50,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1262304459, now seen corresponding path program 1 times [2023-11-12 00:10:50,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:50,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975199457] [2023-11-12 00:10:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:50,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2023-11-12 00:10:50,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:50,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975199457] [2023-11-12 00:10:50,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975199457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:50,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:10:50,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:10:50,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866182952] [2023-11-12 00:10:50,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:50,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:10:50,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:50,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:10:50,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:10:50,339 INFO L87 Difference]: Start difference. First operand 99 states and 135 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 00:10:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:50,379 INFO L93 Difference]: Finished difference Result 99 states and 135 transitions. [2023-11-12 00:10:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:10:50,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 122 [2023-11-12 00:10:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:50,384 INFO L225 Difference]: With dead ends: 99 [2023-11-12 00:10:50,384 INFO L226 Difference]: Without dead ends: 98 [2023-11-12 00:10:50,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:10:50,386 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:50,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 72 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:50,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-12 00:10:50,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-11-12 00:10:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 64 states have internal predecessors, (69), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-12 00:10:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 133 transitions. [2023-11-12 00:10:50,411 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 133 transitions. Word has length 122 [2023-11-12 00:10:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:50,416 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 133 transitions. [2023-11-12 00:10:50,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 00:10:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 133 transitions. [2023-11-12 00:10:50,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-12 00:10:50,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:50,428 INFO L195 NwaCegarLoop]: trace histogram [26, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:50,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 00:10:50,429 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:50,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:50,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1161239345, now seen corresponding path program 1 times [2023-11-12 00:10:50,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:50,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845726213] [2023-11-12 00:10:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:50,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 97 proven. 36 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2023-11-12 00:10:50,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:50,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845726213] [2023-11-12 00:10:50,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845726213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:50,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42322086] [2023-11-12 00:10:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:50,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:50,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:50,725 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:50,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:10:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:50,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:10:50,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 433 proven. 36 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-12 00:10:50,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 97 proven. 36 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2023-11-12 00:10:51,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42322086] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:51,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [621156332] [2023-11-12 00:10:51,093 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-12 00:10:51,093 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:51,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:51,094 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:51,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:10:52,113 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-12 00:10:52,115 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:10:52,670 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4275#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2147483645 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-12 00:10:52,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:10:52,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:10:52,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-11-12 00:10:52,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402365165] [2023-11-12 00:10:52,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:10:52,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:10:52,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:52,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:10:52,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2023-11-12 00:10:52,673 INFO L87 Difference]: Start difference. First operand 98 states and 133 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-12 00:10:52,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:52,825 INFO L93 Difference]: Finished difference Result 171 states and 233 transitions. [2023-11-12 00:10:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:10:52,825 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 130 [2023-11-12 00:10:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:52,832 INFO L225 Difference]: With dead ends: 171 [2023-11-12 00:10:52,832 INFO L226 Difference]: Without dead ends: 109 [2023-11-12 00:10:52,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 357 SyntacticMatches, 19 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2023-11-12 00:10:52,837 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 15 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:52,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 176 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:10:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-12 00:10:52,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-11-12 00:10:52,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 71 states have internal predecessors, (74), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-12 00:10:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 146 transitions. [2023-11-12 00:10:52,859 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 146 transitions. Word has length 130 [2023-11-12 00:10:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:52,860 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 146 transitions. [2023-11-12 00:10:52,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-12 00:10:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 146 transitions. [2023-11-12 00:10:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-12 00:10:52,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:52,867 INFO L195 NwaCegarLoop]: trace histogram [34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:52,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:10:53,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:53,079 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:53,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:53,080 INFO L85 PathProgramCache]: Analyzing trace with hash 304188569, now seen corresponding path program 2 times [2023-11-12 00:10:53,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:53,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590199578] [2023-11-12 00:10:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:53,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 172 proven. 60 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2023-11-12 00:10:53,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:53,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590199578] [2023-11-12 00:10:53,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590199578] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:53,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559846967] [2023-11-12 00:10:53,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:10:53,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:53,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:53,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:10:53,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:10:53,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:10:53,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:10:53,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2023-11-12 00:10:53,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:10:53,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559846967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:10:53,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:10:53,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 10 [2023-11-12 00:10:53,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19956702] [2023-11-12 00:10:53,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:10:53,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:10:53,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:53,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:10:53,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:10:53,568 INFO L87 Difference]: Start difference. First operand 109 states and 146 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-12 00:10:53,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:53,639 INFO L93 Difference]: Finished difference Result 109 states and 146 transitions. [2023-11-12 00:10:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:10:53,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 168 [2023-11-12 00:10:53,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:53,641 INFO L225 Difference]: With dead ends: 109 [2023-11-12 00:10:53,641 INFO L226 Difference]: Without dead ends: 108 [2023-11-12 00:10:53,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:10:53,642 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:53,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 54 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:10:53,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-12 00:10:53,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-12 00:10:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-12 00:10:53,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 145 transitions. [2023-11-12 00:10:53,660 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 145 transitions. Word has length 168 [2023-11-12 00:10:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:53,661 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 145 transitions. [2023-11-12 00:10:53,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-12 00:10:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 145 transitions. [2023-11-12 00:10:53,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-12 00:10:53,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:53,664 INFO L195 NwaCegarLoop]: trace histogram [36, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:53,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:10:53,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 00:10:53,870 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:53,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:53,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2083941993, now seen corresponding path program 3 times [2023-11-12 00:10:53,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:53,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638855642] [2023-11-12 00:10:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:53,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:10:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2023-11-12 00:10:54,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:10:54,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638855642] [2023-11-12 00:10:54,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638855642] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:10:54,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923014640] [2023-11-12 00:10:54,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 00:10:54,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:54,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:10:54,898 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:10:54,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:10:55,047 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 00:10:55,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:10:55,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 00:10:55,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:10:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 193 proven. 78 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2023-11-12 00:10:55,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:10:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 193 proven. 78 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2023-11-12 00:10:55,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923014640] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:10:55,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1381480248] [2023-11-12 00:10:55,567 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-12 00:10:55,567 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:10:55,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:10:55,568 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:10:55,568 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:10:56,601 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-12 00:10:56,602 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:10:57,521 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6616#(and (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_#t~post1#1|) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-12 00:10:57,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:10:57,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:10:57,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 32 [2023-11-12 00:10:57,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265214123] [2023-11-12 00:10:57,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:10:57,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-12 00:10:57,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:10:57,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-12 00:10:57,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1668, Unknown=0, NotChecked=0, Total=1980 [2023-11-12 00:10:57,526 INFO L87 Difference]: Start difference. First operand 108 states and 145 transitions. Second operand has 33 states, 32 states have (on average 3.6875) internal successors, (118), 33 states have internal predecessors, (118), 12 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 12 states have call predecessors, (56), 12 states have call successors, (56) [2023-11-12 00:10:58,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:10:58,603 INFO L93 Difference]: Finished difference Result 324 states and 456 transitions. [2023-11-12 00:10:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-12 00:10:58,604 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.6875) internal successors, (118), 33 states have internal predecessors, (118), 12 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 12 states have call predecessors, (56), 12 states have call successors, (56) Word has length 177 [2023-11-12 00:10:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:10:58,608 INFO L225 Difference]: With dead ends: 324 [2023-11-12 00:10:58,609 INFO L226 Difference]: Without dead ends: 323 [2023-11-12 00:10:58,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 493 SyntacticMatches, 18 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=840, Invalid=3716, Unknown=0, NotChecked=0, Total=4556 [2023-11-12 00:10:58,612 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 227 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:10:58,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 245 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:10:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-12 00:10:58,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 241. [2023-11-12 00:10:58,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 155 states have (on average 1.070967741935484) internal successors, (166), 155 states have internal predecessors, (166), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-12 00:10:58,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 334 transitions. [2023-11-12 00:10:58,661 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 334 transitions. Word has length 177 [2023-11-12 00:10:58,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:10:58,662 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 334 transitions. [2023-11-12 00:10:58,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.6875) internal successors, (118), 33 states have internal predecessors, (118), 12 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 12 states have call predecessors, (56), 12 states have call successors, (56) [2023-11-12 00:10:58,663 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 334 transitions. [2023-11-12 00:10:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-11-12 00:10:58,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:10:58,672 INFO L195 NwaCegarLoop]: trace histogram [68, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:10:58,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:10:58,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:10:58,879 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:10:58,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:10:58,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1918449513, now seen corresponding path program 4 times [2023-11-12 00:10:58,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:10:58,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113147924] [2023-11-12 00:10:58,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:10:58,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:10:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5942 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 4610 trivial. 0 not checked. [2023-11-12 00:11:01,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:01,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113147924] [2023-11-12 00:11:01,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113147924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:11:01,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740927411] [2023-11-12 00:11:01,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-12 00:11:01,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:01,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:01,239 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:01,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:11:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:01,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 00:11:01,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5942 backedges. 3295 proven. 0 refuted. 0 times theorem prover too weak. 2647 trivial. 0 not checked. [2023-11-12 00:11:01,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:01,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740927411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:01,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:11:01,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [34] total 44 [2023-11-12 00:11:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349288189] [2023-11-12 00:11:01,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:01,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:11:01,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:01,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:11:01,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=1576, Unknown=0, NotChecked=0, Total=1892 [2023-11-12 00:11:01,849 INFO L87 Difference]: Start difference. First operand 241 states and 334 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 6 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-11-12 00:11:02,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:02,088 INFO L93 Difference]: Finished difference Result 366 states and 505 transitions. [2023-11-12 00:11:02,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 00:11:02,089 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 6 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 329 [2023-11-12 00:11:02,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:02,090 INFO L225 Difference]: With dead ends: 366 [2023-11-12 00:11:02,090 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 00:11:02,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=350, Invalid=1906, Unknown=0, NotChecked=0, Total=2256 [2023-11-12 00:11:02,094 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 32 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:02,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 224 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:11:02,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 00:11:02,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 00:11:02,095 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) [2023-11-12 00:11:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 00:11:02,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 329 [2023-11-12 00:11:02,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:02,096 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 00:11:02,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 6 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2023-11-12 00:11:02,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 00:11:02,096 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 00:11:02,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-11-12 00:11:02,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-11-12 00:11:02,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-11-12 00:11:02,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-11-12 00:11:02,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-11-12 00:11:02,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-11-12 00:11:02,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-11-12 00:11:02,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-11-12 00:11:02,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-11-12 00:11:02,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-11-12 00:11:02,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-11-12 00:11:02,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-11-12 00:11:02,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:02,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-12 00:11:02,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 00:11:03,683 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-12 00:11:03,684 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2023-11-12 00:11:03,684 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2023-11-12 00:11:03,684 INFO L895 garLoopResultBuilder]: At program point L23-1(line 23) the Hoare annotation is: (let ((.cse0 (<= 1 |#StackHeapBarrier|))) (or (and .cse0 (= |ULTIMATE.start_main_~j~0#1| 4) (<= |ULTIMATE.start_main_~i~0#1| 7) (<= 4 |ULTIMATE.start_main_~i~0#1|)) (and .cse0 (<= 3 |ULTIMATE.start_main_~i~0#1|) (= 3 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 6)) (and (= 2 |ULTIMATE.start_main_~j~0#1|) .cse0 (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 5)) (and .cse0 (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 4) (= |ULTIMATE.start_main_~j~0#1| 1)))) [2023-11-12 00:11:03,684 INFO L895 garLoopResultBuilder]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse0 (<= 1 |#StackHeapBarrier|))) (or (and .cse0 (= |ULTIMATE.start_main_~j~0#1| 4) (<= |ULTIMATE.start_main_~i~0#1| 7) (<= 4 |ULTIMATE.start_main_~i~0#1|)) (and .cse0 (<= 3 |ULTIMATE.start_main_~i~0#1|) (= 3 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 6)) (and (= 2 |ULTIMATE.start_main_~j~0#1|) .cse0 (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 5)) (and .cse0 (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 4) (= |ULTIMATE.start_main_~j~0#1| 1)))) [2023-11-12 00:11:03,685 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-12 00:11:03,685 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-12 00:11:03,685 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2023-11-12 00:11:03,686 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2023-11-12 00:11:03,686 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2023-11-12 00:11:03,686 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2023-11-12 00:11:03,686 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-11-12 00:11:03,686 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~j~0#1| 4) (<= |ULTIMATE.start_main_~i~0#1| 7) (<= 4 |ULTIMATE.start_main_~i~0#1|)) [2023-11-12 00:11:03,686 INFO L895 garLoopResultBuilder]: At program point L28-2(line 28) the Hoare annotation is: (and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~j~0#1| 4) (<= |ULTIMATE.start_main_~i~0#1| 7) (<= 4 |ULTIMATE.start_main_~i~0#1|)) [2023-11-12 00:11:03,687 INFO L895 garLoopResultBuilder]: At program point L24(lines 18 25) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~j~0#1| 0)) (.cse0 (<= 1 |#StackHeapBarrier|))) (or (and .cse0 (= |ULTIMATE.start_main_~j~0#1| 4) (<= |ULTIMATE.start_main_~i~0#1| 7) (<= 4 |ULTIMATE.start_main_~i~0#1|)) (and .cse0 (<= 3 |ULTIMATE.start_main_~i~0#1|) (= 3 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 6)) (and (= 2 |ULTIMATE.start_main_~j~0#1|) .cse0 (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 5)) (and (< 0 |ULTIMATE.start_main_~i~0#1|) .cse0 (<= |ULTIMATE.start_main_~i~0#1| 3) .cse1) (let ((.cse2 (select |#memory_int| 1))) (and .cse0 (= 2 (select |#length| 1)) (= 9 (select |#length| 2)) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse2 0) 48) .cse1 (<= |ULTIMATE.start_main_~i~0#1| 1) (= (select .cse2 1) 0))) (and .cse0 (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 4) (= |ULTIMATE.start_main_~j~0#1| 1)))) [2023-11-12 00:11:03,687 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-12 00:11:03,687 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2023-11-12 00:11:03,687 INFO L895 garLoopResultBuilder]: At program point L16-2(lines 16 31) the Hoare annotation is: (and (let ((.cse0 (<= 1 |#StackHeapBarrier|))) (or (and .cse0 (= |ULTIMATE.start_main_~i~0#1| 0)) (and .cse0 (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 4)))) (or (< 0 |ULTIMATE.start_main_~i~0#1|) (let ((.cse1 (select |#memory_int| 1))) (and (= 2 (select |#length| 1)) (= 9 (select |#length| 2)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= (select .cse1 1) 0))))) [2023-11-12 00:11:03,687 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2023-11-12 00:11:03,687 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2023-11-12 00:11:03,687 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 00:11:03,687 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-11-12 00:11:03,688 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2023-11-12 00:11:03,688 INFO L895 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: (let ((.cse0 (<= 1 |#StackHeapBarrier|)) (.cse1 (<= 1 |ULTIMATE.start_main_~i~0#1|))) (or (and (= 2 |ULTIMATE.start_main_~j~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~i~0#1| 5)) (and .cse0 (= |ULTIMATE.start_main_~j~0#1| 4) .cse1 (<= |ULTIMATE.start_main_~i~0#1| 7)) (and .cse0 .cse1 (= 3 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 6)) (and .cse0 .cse1 (<= |ULTIMATE.start_main_~i~0#1| 4) (= |ULTIMATE.start_main_~j~0#1| 1)))) [2023-11-12 00:11:03,688 INFO L895 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (let ((.cse0 (<= 1 |#StackHeapBarrier|)) (.cse1 (<= 1 |ULTIMATE.start_main_~i~0#1|))) (or (and (= 2 |ULTIMATE.start_main_~j~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~i~0#1| 5)) (and .cse0 (= |ULTIMATE.start_main_~j~0#1| 4) .cse1 (<= |ULTIMATE.start_main_~i~0#1| 7)) (and .cse0 .cse1 (= 3 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 6)) (and .cse0 .cse1 (<= |ULTIMATE.start_main_~i~0#1| 4) (= |ULTIMATE.start_main_~j~0#1| 1)))) [2023-11-12 00:11:03,688 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2023-11-12 00:11:03,688 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 00:11:03,688 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-12 00:11:03,688 INFO L899 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2023-11-12 00:11:03,688 INFO L899 garLoopResultBuilder]: For program point L30-1(line 30) no Hoare annotation was computed. [2023-11-12 00:11:03,688 INFO L899 garLoopResultBuilder]: For program point L30-2(line 30) no Hoare annotation was computed. [2023-11-12 00:11:03,688 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~j~0#1| 4) (<= |ULTIMATE.start_main_~i~0#1| 7) (<= 4 |ULTIMATE.start_main_~i~0#1|)) [2023-11-12 00:11:03,689 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-11-12 00:11:03,689 INFO L895 garLoopResultBuilder]: At program point L18-2(lines 18 25) the Hoare annotation is: (and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~j~0#1| 4) (<= |ULTIMATE.start_main_~i~0#1| 7) (<= 4 |ULTIMATE.start_main_~i~0#1|)) [2023-11-12 00:11:03,689 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2023-11-12 00:11:03,689 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2023-11-12 00:11:03,689 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2023-11-12 00:11:03,689 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true [2023-11-12 00:11:03,693 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:03,695 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:11:03,707 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:11:03,708 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:11:03,708 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:11:03,708 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:11:03,708 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:11:03,708 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:11:03,708 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:11:03,709 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:11:03,709 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:11:03,709 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:11:03,709 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:11:03,709 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:11:03,710 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:11:03,710 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:11:03,711 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:11:03,712 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:11:03,712 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:11:03,712 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:11:03,712 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:11:03,713 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:11:03,713 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:11:03,714 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:11:03,714 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:11:03,715 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:11:03,715 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:11:03,715 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:11:03,715 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:11:03,715 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:11:03,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:11:03 BoogieIcfgContainer [2023-11-12 00:11:03,716 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:11:03,717 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:11:03,717 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:11:03,717 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:11:03,718 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:10:38" (3/4) ... [2023-11-12 00:11:03,720 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 00:11:03,723 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-12 00:11:03,727 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-12 00:11:03,728 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-12 00:11:03,728 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 00:11:03,728 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:11:03,830 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:11:03,831 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 00:11:03,831 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:11:03,832 INFO L158 Benchmark]: Toolchain (without parser) took 25773.88ms. Allocated memory was 140.5MB in the beginning and 474.0MB in the end (delta: 333.4MB). Free memory was 89.4MB in the beginning and 440.9MB in the end (delta: -351.5MB). Peak memory consumption was 225.5MB. Max. memory is 16.1GB. [2023-11-12 00:11:03,832 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:11:03,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.37ms. Allocated memory is still 140.5MB. Free memory was 89.2MB in the beginning and 78.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:11:03,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.46ms. Allocated memory is still 140.5MB. Free memory was 78.8MB in the beginning and 77.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:11:03,833 INFO L158 Benchmark]: Boogie Preprocessor took 44.52ms. Allocated memory is still 140.5MB. Free memory was 77.2MB in the beginning and 76.3MB in the end (delta: 908.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:11:03,834 INFO L158 Benchmark]: RCFGBuilder took 537.35ms. Allocated memory is still 140.5MB. Free memory was 76.3MB in the beginning and 63.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:11:03,834 INFO L158 Benchmark]: TraceAbstraction took 24760.12ms. Allocated memory was 140.5MB in the beginning and 474.0MB in the end (delta: 333.4MB). Free memory was 62.9MB in the beginning and 207.7MB in the end (delta: -144.7MB). Peak memory consumption was 238.1MB. Max. memory is 16.1GB. [2023-11-12 00:11:03,835 INFO L158 Benchmark]: Witness Printer took 114.58ms. Allocated memory is still 474.0MB. Free memory was 207.7MB in the beginning and 440.9MB in the end (delta: -233.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 00:11:03,837 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.37ms. Allocated memory is still 140.5MB. Free memory was 89.2MB in the beginning and 78.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.46ms. Allocated memory is still 140.5MB. Free memory was 78.8MB in the beginning and 77.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.52ms. Allocated memory is still 140.5MB. Free memory was 77.2MB in the beginning and 76.3MB in the end (delta: 908.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 537.35ms. Allocated memory is still 140.5MB. Free memory was 76.3MB in the beginning and 63.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 24760.12ms. Allocated memory was 140.5MB in the beginning and 474.0MB in the end (delta: 333.4MB). Free memory was 62.9MB in the beginning and 207.7MB in the end (delta: -144.7MB). Peak memory consumption was 238.1MB. Max. memory is 16.1GB. * Witness Printer took 114.58ms. Allocated memory is still 474.0MB. Free memory was 207.7MB in the beginning and 440.9MB in the end (delta: -233.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 38 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 24.7s, OverallIterations: 14, TraceHistogramMax: 68, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 548 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 476 mSDsluCounter, 1604 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1230 mSDsCounter, 149 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1873 IncrementalHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 149 mSolverCounterUnsat, 374 mSDtfsCounter, 1873 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2097 GetRequests, 1786 SyntacticMatches, 56 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3571 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=241occurred in iteration=13, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 193 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 188 PreInvPairs, 262 NumberOfFragments, 446 HoareAnnotationTreeSize, 188 FomulaSimplifications, 5130 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 11 FomulaSimplificationsInter, 2038 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 2173 NumberOfCodeBlocks, 1957 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2622 ConstructedInterpolants, 0 QuantifiedInterpolants, 4260 SizeOfPredicates, 19 NumberOfNonLiveVariables, 2547 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 22175/24186 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 3.0s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 110, DAG_INTERPRETER_EARLY_EXITS: 5, TOOLS_POST_APPLICATIONS: 101, TOOLS_POST_TIME: 0.6s, TOOLS_POST_CALL_APPLICATIONS: 100, TOOLS_POST_CALL_TIME: 0.9s, TOOLS_POST_RETURN_APPLICATIONS: 88, TOOLS_POST_RETURN_TIME: 0.8s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 289, TOOLS_QUANTIFIERELIM_TIME: 2.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 274, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 112, DOMAIN_JOIN_TIME: 0.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 110, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 5, LOOP_SUMMARIZER_CACHE_MISSES: 5, LOOP_SUMMARIZER_OVERALL_TIME: 2.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 88, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 1867, DAG_COMPRESSION_RETAINED_NODES: 214, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant [2023-11-12 00:11:03,860 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:11:03,860 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:11:03,861 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:11:03,861 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:11:03,861 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:11:03,861 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:11:03,861 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:11:03,861 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:11:03,862 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:11:03,862 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:11:03,862 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:11:03,862 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:11:03,862 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:11:03,862 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated Derived loop invariant: ((i == 0) || ((1 <= i) && (i <= 4))) - InvariantResult [Line: 18]: Loop Invariant [2023-11-12 00:11:03,866 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:11:03,868 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:11:03,868 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:11:03,868 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:11:03,868 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:11:03,883 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:11:03,883 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:11:03,884 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:11:03,884 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:11:03,885 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:11:03,885 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:11:03,885 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:11:03,885 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:11:03,886 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated Derived loop invariant: ((((((((j == 4) && (i <= 7)) && (4 <= i)) || (((3 <= i) && (3 == j)) && (i <= 6))) || (((2 == j) && (2 <= i)) && (i <= 5))) || (((0 < i) && (i <= 3)) && (j == 0))) || (((0 <= i) && (j == 0)) && (i <= 1))) || (((1 <= i) && (i <= 4)) && (j == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-12 00:11:03,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651a3441-13eb-47cb-a338-eae81f3c49dc/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE