./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/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_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/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_96c91dcc-f783-479e-8caf-1f8d72188c7c/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 3f8ee4f5181b3404c1367dbf131683f1e761cea6b176154f687b628466c991fe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:43:59,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:43:59,212 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:43:59,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:43:59,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:43:59,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:43:59,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:43:59,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:43:59,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:43:59,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:43:59,269 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:43:59,270 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:43:59,270 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:43:59,272 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:43:59,272 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:43:59,273 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:43:59,273 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:43:59,274 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:43:59,275 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:43:59,275 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:43:59,276 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:43:59,276 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:43:59,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:43:59,277 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:43:59,278 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:43:59,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:43:59,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:43:59,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:43:59,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:43:59,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:43:59,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:43:59,281 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:43:59,281 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:43:59,281 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:43:59,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:43:59,281 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:43:59,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:43:59,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:43:59,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:43:59,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:43:59,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:43:59,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:43:59,283 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:43:59,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:43:59,284 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:43:59,284 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:43:59,284 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:43:59,284 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_96c91dcc-f783-479e-8caf-1f8d72188c7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f8ee4f5181b3404c1367dbf131683f1e761cea6b176154f687b628466c991fe [2023-11-12 00:43:59,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:43:59,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:43:59,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:43:59,628 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:43:59,629 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:43:59,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c [2023-11-12 00:44:02,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:44:03,211 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:44:03,212 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/sv-benchmarks/c/recursive-simple/id_i10_o10-2.c [2023-11-12 00:44:03,218 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/data/dcf825523/f37b7fc2d09a4aa5a89140008b8a9eaa/FLAG179b63bcc [2023-11-12 00:44:03,234 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/data/dcf825523/f37b7fc2d09a4aa5a89140008b8a9eaa [2023-11-12 00:44:03,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:44:03,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:44:03,241 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:03,241 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:44:03,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:44:03,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8a7c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03, skipping insertion in model container [2023-11-12 00:44:03,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,270 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:44:03,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:03,441 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:44:03,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:03,470 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:44:03,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03 WrapperNode [2023-11-12 00:44:03,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:03,472 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:03,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:44:03,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:44:03,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,491 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,506 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 19 [2023-11-12 00:44:03,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:03,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:44:03,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:44:03,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:44:03,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,524 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:44:03,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:44:03,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:44:03,527 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:44:03,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03" (1/1) ... [2023-11-12 00:44:03,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:03,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:03,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:44:03,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:44:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:44:03,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:44:03,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:44:03,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:44:03,609 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-11-12 00:44:03,609 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-11-12 00:44:03,671 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:44:03,674 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:44:03,787 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:44:03,819 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:44:03,819 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:44:03,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:03 BoogieIcfgContainer [2023-11-12 00:44:03,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:44:03,825 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:44:03,825 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:44:03,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:44:03,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:44:03" (1/3) ... [2023-11-12 00:44:03,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4bcc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:03, skipping insertion in model container [2023-11-12 00:44:03,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:03" (2/3) ... [2023-11-12 00:44:03,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4bcc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:03, skipping insertion in model container [2023-11-12 00:44:03,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:03" (3/3) ... [2023-11-12 00:44:03,832 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i10_o10-2.c [2023-11-12 00:44:03,854 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:44:03,855 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-12 00:44:03,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:44:03,919 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;@785fddaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:44:03,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-12 00:44:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 00:44:03,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:44:03,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:03,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:44:03,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:44:03,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:03,942 INFO L85 PathProgramCache]: Analyzing trace with hash 65646583, now seen corresponding path program 1 times [2023-11-12 00:44:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:03,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571587885] [2023-11-12 00:44:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:03,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:04,169 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 00:44:04,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:04,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571587885] [2023-11-12 00:44:04,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571587885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:04,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:04,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:44:04,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797193117] [2023-11-12 00:44:04,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:04,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:44:04,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:44:04,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:44:04,234 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:04,387 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2023-11-12 00:44:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:44:04,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 00:44:04,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:04,397 INFO L225 Difference]: With dead ends: 36 [2023-11-12 00:44:04,398 INFO L226 Difference]: Without dead ends: 27 [2023-11-12 00:44:04,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 00:44:04,404 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:04,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 44 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:44:04,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-12 00:44:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2023-11-12 00:44:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 00:44:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-11-12 00:44:04,448 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 5 [2023-11-12 00:44:04,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:04,449 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-11-12 00:44:04,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:04,449 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-12 00:44:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:44:04,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:04,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:44:04,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:44:04,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:44:04,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:04,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2035044128, now seen corresponding path program 1 times [2023-11-12 00:44:04,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:04,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824085118] [2023-11-12 00:44:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:04,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:04,521 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 00:44:04,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:04,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824085118] [2023-11-12 00:44:04,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824085118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:04,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:04,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:44:04,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195946243] [2023-11-12 00:44:04,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:04,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:44:04,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:04,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:44:04,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:44:04,525 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:04,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:04,564 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2023-11-12 00:44:04,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:44:04,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 00:44:04,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:04,566 INFO L225 Difference]: With dead ends: 24 [2023-11-12 00:44:04,566 INFO L226 Difference]: Without dead ends: 23 [2023-11-12 00:44:04,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 00:44:04,568 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:04,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 16 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:44:04,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-12 00:44:04,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-12 00:44:04,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 00:44:04,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-11-12 00:44:04,578 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2023-11-12 00:44:04,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:04,579 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-11-12 00:44:04,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:04,579 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-11-12 00:44:04,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:44:04,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:04,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:04,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:44:04,581 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:44:04,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:04,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1315832336, now seen corresponding path program 1 times [2023-11-12 00:44:04,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:04,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153304114] [2023-11-12 00:44:04,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:04,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:04,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:04,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153304114] [2023-11-12 00:44:04,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153304114] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:44:04,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924336404] [2023-11-12 00:44:04,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:04,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:04,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:04,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:04,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:44:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:04,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:44:04,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:04,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:04,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924336404] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:04,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [373210989] [2023-11-12 00:44:04,975 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:44:04,975 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:44:04,979 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:44:04,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:44:04,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-12 00:44:04,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348674955] [2023-11-12 00:44:04,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:44:04,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 00:44:04,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:04,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 00:44:04,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:44:04,984 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:05,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:05,236 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2023-11-12 00:44:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:44:05,237 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:44:05,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:05,242 INFO L225 Difference]: With dead ends: 73 [2023-11-12 00:44:05,242 INFO L226 Difference]: Without dead ends: 65 [2023-11-12 00:44:05,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:44:05,245 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 126 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:05,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 78 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:44:05,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-12 00:44:05,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2023-11-12 00:44:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.325) internal successors, (53), 42 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-12 00:44:05,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2023-11-12 00:44:05,261 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 10 [2023-11-12 00:44:05,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:05,261 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2023-11-12 00:44:05,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:05,261 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2023-11-12 00:44:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:44:05,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:05,262 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:05,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:05,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:05,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:44:05,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:05,470 INFO L85 PathProgramCache]: Analyzing trace with hash -528864317, now seen corresponding path program 1 times [2023-11-12 00:44:05,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:05,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650004399] [2023-11-12 00:44:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:05,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 00:44:05,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:05,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650004399] [2023-11-12 00:44:05,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650004399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:05,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:05,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:44:05,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338488611] [2023-11-12 00:44:05,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:05,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:44:05,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:05,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:44:05,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:44:05,554 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:44:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:05,574 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2023-11-12 00:44:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:44:05,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-12 00:44:05,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:05,577 INFO L225 Difference]: With dead ends: 73 [2023-11-12 00:44:05,577 INFO L226 Difference]: Without dead ends: 71 [2023-11-12 00:44:05,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:44:05,579 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:05,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:44:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-12 00:44:05,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-11-12 00:44:05,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 56 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-12 00:44:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2023-11-12 00:44:05,594 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2023-11-12 00:44:05,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:05,594 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2023-11-12 00:44:05,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:44:05,595 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2023-11-12 00:44:05,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-12 00:44:05,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:05,596 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:05,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:44:05,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:44:05,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:05,597 INFO L85 PathProgramCache]: Analyzing trace with hash 207781312, now seen corresponding path program 1 times [2023-11-12 00:44:05,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:05,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358618006] [2023-11-12 00:44:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:05,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 00:44:05,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:05,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358618006] [2023-11-12 00:44:05,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358618006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:05,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:05,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:44:05,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279405986] [2023-11-12 00:44:05,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:05,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:44:05,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:05,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:44:05,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:44:05,646 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:44:05,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:05,659 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2023-11-12 00:44:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:44:05,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-12 00:44:05,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:05,661 INFO L225 Difference]: With dead ends: 71 [2023-11-12 00:44:05,661 INFO L226 Difference]: Without dead ends: 70 [2023-11-12 00:44:05,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:44:05,663 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:05,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:44:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-12 00:44:05,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-12 00:44:05,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-12 00:44:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2023-11-12 00:44:05,677 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2023-11-12 00:44:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:05,677 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2023-11-12 00:44:05,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:44:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2023-11-12 00:44:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-12 00:44:05,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:05,679 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2023-11-12 00:44:05,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:44:05,679 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:44:05,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1826453303, now seen corresponding path program 2 times [2023-11-12 00:44:05,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:05,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151295007] [2023-11-12 00:44:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:05,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:06,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:06,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151295007] [2023-11-12 00:44:06,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151295007] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:44:06,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386795078] [2023-11-12 00:44:06,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:44:06,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:06,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:06,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:06,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:44:06,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-12 00:44:06,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:44:06,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 00:44:06,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:06,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:06,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386795078] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:06,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2015621546] [2023-11-12 00:44:06,359 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:44:06,359 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:44:06,360 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:44:06,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:44:06,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-12 00:44:06,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51399198] [2023-11-12 00:44:06,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:44:06,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-12 00:44:06,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:06,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-12 00:44:06,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-11-12 00:44:06,364 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 24 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:06,845 INFO L93 Difference]: Finished difference Result 187 states and 203 transitions. [2023-11-12 00:44:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-12 00:44:06,846 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-12 00:44:06,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:06,848 INFO L225 Difference]: With dead ends: 187 [2023-11-12 00:44:06,848 INFO L226 Difference]: Without dead ends: 155 [2023-11-12 00:44:06,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=389, Invalid=1017, Unknown=0, NotChecked=0, Total=1406 [2023-11-12 00:44:06,851 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 298 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:06,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 177 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:44:06,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-12 00:44:06,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 145. [2023-11-12 00:44:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 115 states have internal predecessors, (132), 12 states have call successors, (12), 11 states have call predecessors, (12), 16 states have return successors, (18), 18 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-12 00:44:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2023-11-12 00:44:06,872 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 25 [2023-11-12 00:44:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:06,873 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2023-11-12 00:44:06,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2023-11-12 00:44:06,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 00:44:06,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:06,875 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 00:44:06,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 00:44:07,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 00:44:07,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:44:07,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:07,082 INFO L85 PathProgramCache]: Analyzing trace with hash 672735076, now seen corresponding path program 1 times [2023-11-12 00:44:07,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:07,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081333110] [2023-11-12 00:44:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:07,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 00:44:07,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:07,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081333110] [2023-11-12 00:44:07,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081333110] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:44:07,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707274843] [2023-11-12 00:44:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:07,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:07,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:07,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:07,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:44:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:07,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 00:44:07,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:44:07,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:44:07,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707274843] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:07,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [459843185] [2023-11-12 00:44:07,943 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:44:07,944 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:44:07,944 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:44:07,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:44:07,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 15] total 29 [2023-11-12 00:44:07,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519466488] [2023-11-12 00:44:07,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:44:07,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-12 00:44:07,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-12 00:44:07,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2023-11-12 00:44:07,953 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-12 00:44:08,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:08,526 INFO L93 Difference]: Finished difference Result 207 states and 226 transitions. [2023-11-12 00:44:08,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-12 00:44:08,527 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2023-11-12 00:44:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:08,529 INFO L225 Difference]: With dead ends: 207 [2023-11-12 00:44:08,529 INFO L226 Difference]: Without dead ends: 141 [2023-11-12 00:44:08,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=316, Invalid=1406, Unknown=0, NotChecked=0, Total=1722 [2023-11-12 00:44:08,532 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 160 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:08,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 385 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:44:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-12 00:44:08,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2023-11-12 00:44:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 105 states have internal predecessors, (118), 12 states have call successors, (12), 11 states have call predecessors, (12), 13 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) [2023-11-12 00:44:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2023-11-12 00:44:08,573 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 39 [2023-11-12 00:44:08,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:08,573 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2023-11-12 00:44:08,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-12 00:44:08,574 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2023-11-12 00:44:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-12 00:44:08,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:08,576 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1] [2023-11-12 00:44:08,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:08,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:08,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:44:08,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash -816224745, now seen corresponding path program 3 times [2023-11-12 00:44:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008258331] [2023-11-12 00:44:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:09,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:09,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008258331] [2023-11-12 00:44:09,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008258331] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:44:09,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337115979] [2023-11-12 00:44:09,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 00:44:09,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:09,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:09,326 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:09,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:44:09,401 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 00:44:09,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:44:09,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-12 00:44:09,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:09,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:10,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337115979] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:10,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1059185109] [2023-11-12 00:44:10,263 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:44:10,263 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:44:10,264 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:44:10,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:44:10,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-11-12 00:44:10,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715862574] [2023-11-12 00:44:10,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:44:10,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-12 00:44:10,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-12 00:44:10,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2023-11-12 00:44:10,268 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 25 states have internal predecessors, (88), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:10,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:10,647 INFO L93 Difference]: Finished difference Result 143 states and 146 transitions. [2023-11-12 00:44:10,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-12 00:44:10,648 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 25 states have internal predecessors, (88), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-12 00:44:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:10,666 INFO L225 Difference]: With dead ends: 143 [2023-11-12 00:44:10,667 INFO L226 Difference]: Without dead ends: 142 [2023-11-12 00:44:10,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1045, Invalid=2495, Unknown=0, NotChecked=0, Total=3540 [2023-11-12 00:44:10,670 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 222 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:10,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 290 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:44:10,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-12 00:44:10,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132. [2023-11-12 00:44:10,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 106 states have (on average 1.1037735849056605) internal successors, (117), 104 states have internal predecessors, (117), 12 states have call successors, (12), 11 states have call predecessors, (12), 13 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) [2023-11-12 00:44:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 145 transitions. [2023-11-12 00:44:10,700 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 145 transitions. Word has length 55 [2023-11-12 00:44:10,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:10,702 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 145 transitions. [2023-11-12 00:44:10,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 25 states have internal predecessors, (88), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:10,702 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 145 transitions. [2023-11-12 00:44:10,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 00:44:10,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:10,712 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2023-11-12 00:44:10,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:10,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 00:44:10,918 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:44:10,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:10,919 INFO L85 PathProgramCache]: Analyzing trace with hash -36353734, now seen corresponding path program 2 times [2023-11-12 00:44:10,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:10,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410395032] [2023-11-12 00:44:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:10,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:11,037 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-12 00:44:11,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:11,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410395032] [2023-11-12 00:44:11,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410395032] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:44:11,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931131871] [2023-11-12 00:44:11,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:44:11,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:11,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:11,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:11,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:44:11,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-12 00:44:11,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:44:11,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:44:11,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-12 00:44:11,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-12 00:44:11,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931131871] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:11,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1934910054] [2023-11-12 00:44:11,353 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:44:11,354 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:44:11,354 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:44:11,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:44:11,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-12 00:44:11,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546869246] [2023-11-12 00:44:11,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:44:11,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 00:44:11,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:11,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 00:44:11,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:44:11,359 INFO L87 Difference]: Start difference. First operand 132 states and 145 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 00:44:11,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:11,407 INFO L93 Difference]: Finished difference Result 235 states and 273 transitions. [2023-11-12 00:44:11,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:44:11,408 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2023-11-12 00:44:11,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:11,415 INFO L225 Difference]: With dead ends: 235 [2023-11-12 00:44:11,415 INFO L226 Difference]: Without dead ends: 234 [2023-11-12 00:44:11,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:44:11,418 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:11,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:44:11,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-12 00:44:11,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2023-11-12 00:44:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 190 states have (on average 1.0578947368421052) internal successors, (201), 184 states have internal predecessors, (201), 12 states have call successors, (12), 11 states have call predecessors, (12), 31 states have return successors, (38), 38 states have call predecessors, (38), 11 states have call successors, (38) [2023-11-12 00:44:11,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 251 transitions. [2023-11-12 00:44:11,437 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 251 transitions. Word has length 69 [2023-11-12 00:44:11,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:11,439 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 251 transitions. [2023-11-12 00:44:11,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 16 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 00:44:11,439 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 251 transitions. [2023-11-12 00:44:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-12 00:44:11,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:11,444 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2023-11-12 00:44:11,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:11,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:11,649 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:44:11,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash -273703686, now seen corresponding path program 3 times [2023-11-12 00:44:11,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:11,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092254410] [2023-11-12 00:44:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:11,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-12 00:44:11,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:11,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092254410] [2023-11-12 00:44:11,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092254410] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:44:11,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694644909] [2023-11-12 00:44:11,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 00:44:11,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:11,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:11,941 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:11,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:44:12,029 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 00:44:12,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:44:12,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 00:44:12,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-12 00:44:12,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-12 00:44:13,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694644909] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:13,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [992449300] [2023-11-12 00:44:13,917 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:44:13,918 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:44:13,918 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:44:13,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:44:13,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-11-12 00:44:13,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648721936] [2023-11-12 00:44:13,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:44:13,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-12 00:44:13,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:13,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-12 00:44:13,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2023-11-12 00:44:13,923 INFO L87 Difference]: Start difference. First operand 234 states and 251 transitions. Second operand has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-12 00:44:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:14,043 INFO L93 Difference]: Finished difference Result 629 states and 730 transitions. [2023-11-12 00:44:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-12 00:44:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 89 [2023-11-12 00:44:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:14,047 INFO L225 Difference]: With dead ends: 629 [2023-11-12 00:44:14,047 INFO L226 Difference]: Without dead ends: 388 [2023-11-12 00:44:14,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2023-11-12 00:44:14,051 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:14,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:44:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-11-12 00:44:14,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2023-11-12 00:44:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 315 states have (on average 1.034920634920635) internal successors, (326), 306 states have internal predecessors, (326), 12 states have call successors, (12), 11 states have call predecessors, (12), 60 states have return successors, (70), 70 states have call predecessors, (70), 11 states have call successors, (70) [2023-11-12 00:44:14,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 408 transitions. [2023-11-12 00:44:14,071 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 408 transitions. Word has length 89 [2023-11-12 00:44:14,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:14,072 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 408 transitions. [2023-11-12 00:44:14,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-12 00:44:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 408 transitions. [2023-11-12 00:44:14,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-12 00:44:14,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:14,076 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1] [2023-11-12 00:44:14,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:14,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:14,281 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:44:14,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash 459799507, now seen corresponding path program 4 times [2023-11-12 00:44:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:14,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311051166] [2023-11-12 00:44:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:14,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2023-11-12 00:44:15,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:15,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311051166] [2023-11-12 00:44:15,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311051166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:44:15,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509981837] [2023-11-12 00:44:15,218 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-12 00:44:15,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:15,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:15,220 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:15,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:44:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:15,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-12 00:44:15,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 525 proven. 72 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2023-11-12 00:44:16,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 525 proven. 450 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-12 00:44:35,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509981837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:35,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [534345916] [2023-11-12 00:44:35,959 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:44:35,960 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:44:35,960 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:44:35,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:44:35,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 21, 35] total 69 [2023-11-12 00:44:35,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574117694] [2023-11-12 00:44:35,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:44:35,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-11-12 00:44:35,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:35,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-11-12 00:44:35,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=4100, Unknown=0, NotChecked=0, Total=4692 [2023-11-12 00:44:35,967 INFO L87 Difference]: Start difference. First operand 388 states and 408 transitions. Second operand has 69 states, 67 states have (on average 2.970149253731343) internal successors, (199), 67 states have internal predecessors, (199), 20 states have call successors, (21), 3 states have call predecessors, (21), 30 states have return successors, (45), 30 states have call predecessors, (45), 18 states have call successors, (45) [2023-11-12 00:44:36,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:36,781 INFO L93 Difference]: Finished difference Result 388 states and 408 transitions. [2023-11-12 00:44:36,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-12 00:44:36,786 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 67 states have (on average 2.970149253731343) internal successors, (199), 67 states have internal predecessors, (199), 20 states have call successors, (21), 3 states have call predecessors, (21), 30 states have return successors, (45), 30 states have call predecessors, (45), 18 states have call successors, (45) Word has length 154 [2023-11-12 00:44:36,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:36,787 INFO L225 Difference]: With dead ends: 388 [2023-11-12 00:44:36,787 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 00:44:36,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 255 SyntacticMatches, 15 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2709 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1443, Invalid=6747, Unknown=0, NotChecked=0, Total=8190 [2023-11-12 00:44:36,792 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 212 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:36,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 112 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:44:36,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 00:44:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 00:44:36,793 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 00:44:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 00:44:36,793 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2023-11-12 00:44:36,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:36,794 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 00:44:36,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 67 states have (on average 2.970149253731343) internal successors, (199), 67 states have internal predecessors, (199), 20 states have call successors, (21), 3 states have call predecessors, (21), 30 states have return successors, (45), 30 states have call predecessors, (45), 18 states have call successors, (45) [2023-11-12 00:44:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 00:44:36,794 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 00:44:36,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-12 00:44:36,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-12 00:44:36,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-12 00:44:36,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-12 00:44:36,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:37,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:37,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 00:44:37,078 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 00:44:37,079 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (= |ULTIMATE.start_main_~input~0#1| 10) [2023-11-12 00:44:37,079 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-11-12 00:44:37,079 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 00:44:37,079 INFO L899 garLoopResultBuilder]: For program point idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2023-11-12 00:44:37,079 INFO L899 garLoopResultBuilder]: For program point idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2023-11-12 00:44:37,080 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2023-11-12 00:44:37,080 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2023-11-12 00:44:37,080 INFO L899 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2023-11-12 00:44:37,080 INFO L899 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2023-11-12 00:44:37,080 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 9) the Hoare annotation is: true [2023-11-12 00:44:37,080 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-11-12 00:44:37,080 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-11-12 00:44:37,080 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2023-11-12 00:44:37,081 INFO L895 garLoopResultBuilder]: At program point L8-2(line 8) the Hoare annotation is: (or (< 10 |id_#in~x|) (and (= |id_#in~x| id_~x) (<= 1 id_~x)) (< |id_#in~x| 0)) [2023-11-12 00:44:37,081 INFO L899 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2023-11-12 00:44:37,081 INFO L899 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2023-11-12 00:44:37,081 INFO L899 garLoopResultBuilder]: For program point L8-5(line 8) no Hoare annotation was computed. [2023-11-12 00:44:37,084 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1] [2023-11-12 00:44:37,087 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:44:37,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:44:37 BoogieIcfgContainer [2023-11-12 00:44:37,092 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:44:37,093 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:44:37,093 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:44:37,093 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:44:37,094 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:03" (3/4) ... [2023-11-12 00:44:37,096 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 00:44:37,100 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2023-11-12 00:44:37,104 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-12 00:44:37,104 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-12 00:44:37,105 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 00:44:37,105 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:44:37,177 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:44:37,177 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 00:44:37,178 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:44:37,178 INFO L158 Benchmark]: Toolchain (without parser) took 33939.72ms. Allocated memory was 151.0MB in the beginning and 318.8MB in the end (delta: 167.8MB). Free memory was 112.7MB in the beginning and 269.2MB in the end (delta: -156.5MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-11-12 00:44:37,179 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory was 64.5MB in the beginning and 64.3MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:44:37,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.95ms. Allocated memory is still 151.0MB. Free memory was 112.1MB in the beginning and 102.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:44:37,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.13ms. Allocated memory is still 151.0MB. Free memory was 102.3MB in the beginning and 100.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:44:37,180 INFO L158 Benchmark]: Boogie Preprocessor took 19.22ms. Allocated memory is still 151.0MB. Free memory was 100.8MB in the beginning and 100.2MB in the end (delta: 612.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:44:37,180 INFO L158 Benchmark]: RCFGBuilder took 294.84ms. Allocated memory is still 151.0MB. Free memory was 100.2MB in the beginning and 89.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:44:37,181 INFO L158 Benchmark]: TraceAbstraction took 33266.84ms. Allocated memory was 151.0MB in the beginning and 318.8MB in the end (delta: 167.8MB). Free memory was 88.8MB in the beginning and 273.4MB in the end (delta: -184.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:44:37,181 INFO L158 Benchmark]: Witness Printer took 85.21ms. Allocated memory is still 318.8MB. Free memory was 273.4MB in the beginning and 269.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:44:37,183 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory was 64.5MB in the beginning and 64.3MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.95ms. Allocated memory is still 151.0MB. Free memory was 112.1MB in the beginning and 102.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.13ms. Allocated memory is still 151.0MB. Free memory was 102.3MB in the beginning and 100.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.22ms. Allocated memory is still 151.0MB. Free memory was 100.8MB in the beginning and 100.2MB in the end (delta: 612.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 294.84ms. Allocated memory is still 151.0MB. Free memory was 100.2MB in the beginning and 89.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 33266.84ms. Allocated memory was 151.0MB in the beginning and 318.8MB in the end (delta: 167.8MB). Free memory was 88.8MB in the beginning and 273.4MB in the end (delta: -184.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 85.21ms. Allocated memory is still 318.8MB. Free memory was 273.4MB in the beginning and 269.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: 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, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 33.2s, OverallIterations: 11, TraceHistogramMax: 16, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1070 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1062 mSDsluCounter, 1279 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1073 mSDsCounter, 208 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1394 IncrementalHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 208 mSolverCounterUnsat, 206 mSDtfsCounter, 1394 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1052 GetRequests, 742 SyntacticMatches, 17 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4312 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=388occurred in iteration=10, InterpolantAutomatonStates: 182, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 43 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 25 PreInvPairs, 25 NumberOfFragments, 18 HoareAnnotationTreeSize, 25 FomulaSimplifications, 202 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 450 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 27.3s InterpolantComputationTime, 934 NumberOfCodeBlocks, 894 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1350 ConstructedInterpolants, 0 QuantifiedInterpolants, 3468 SizeOfPredicates, 40 NumberOfNonLiveVariables, 883 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 3754/6187 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 00:44:37,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c91dcc-f783-479e-8caf-1f8d72188c7c/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