./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a 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_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2 --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 64bit --witnessprinter.graph.data.programhash e9f5cf3ddf7f2bce97ea02caa876a19793443837e6b09c62b997f759c9b40cc6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:32:59,379 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:32:59,473 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-02 12:32:59,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:32:59,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:32:59,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:32:59,520 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:32:59,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:32:59,522 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:32:59,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:32:59,525 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:32:59,526 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:32:59,526 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:32:59,527 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:32:59,527 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:32:59,527 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:32:59,528 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:32:59,528 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:32:59,529 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:32:59,529 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:32:59,529 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:32:59,534 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:32:59,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:32:59,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:32:59,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:32:59,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:32:59,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:32:59,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:32:59,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:32:59,538 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:32:59,539 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:32:59,540 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:32:59,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:32:59,540 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:32:59,541 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:32:59,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:32:59,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:32:59,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:32:59,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:32:59,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:32:59,544 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:32:59,544 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:32:59,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:32:59,545 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:32:59,545 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:32:59,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:32:59,546 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_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f5cf3ddf7f2bce97ea02caa876a19793443837e6b09c62b997f759c9b40cc6 [2024-11-02 12:32:59,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:32:59,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:32:59,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:32:59,877 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:32:59,879 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:32:59,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/termination-restricted-15/Ex08.c Unable to find full path for "g++" [2024-11-02 12:33:01,939 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:33:02,134 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:33:02,135 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/sv-benchmarks/c/termination-restricted-15/Ex08.c [2024-11-02 12:33:02,144 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/data/b290c1291/c7aa095a098b427c95a50e4839a6c84c/FLAGe509b14e0 [2024-11-02 12:33:02,168 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/data/b290c1291/c7aa095a098b427c95a50e4839a6c84c [2024-11-02 12:33:02,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:33:02,173 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:33:02,175 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:02,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:33:02,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:33:02,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26814cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02, skipping insertion in model container [2024-11-02 12:33:02,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,212 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:33:02,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:02,401 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:33:02,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:02,428 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:33:02,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02 WrapperNode [2024-11-02 12:33:02,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:02,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:02,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:33:02,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:33:02,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,458 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2024-11-02 12:33:02,459 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:02,459 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:33:02,460 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:33:02,460 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:33:02,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,472 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:33:02,479 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:33:02,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:33:02,480 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:33:02,481 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02" (1/1) ... [2024-11-02 12:33:02,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:02,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:02,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:33:02,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:33:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:33:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:33:02,655 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:33:02,657 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:33:02,779 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-02 12:33:02,781 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:33:02,837 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:33:02,838 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:33:02,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:02 BoogieIcfgContainer [2024-11-02 12:33:02,838 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:33:02,841 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:33:02,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:33:02,845 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:33:02,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:33:02" (1/3) ... [2024-11-02 12:33:02,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5912c91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:02, skipping insertion in model container [2024-11-02 12:33:02,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:02" (2/3) ... [2024-11-02 12:33:02,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5912c91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:02, skipping insertion in model container [2024-11-02 12:33:02,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:02" (3/3) ... [2024-11-02 12:33:02,848 INFO L112 eAbstractionObserver]: Analyzing ICFG Ex08.c [2024-11-02 12:33:02,867 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:33:02,867 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-02 12:33:02,932 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:33:02,940 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@24ee63f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:33:02,941 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-02 12:33:02,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:02,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:33:02,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:02,954 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:33:02,955 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-02 12:33:02,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:02,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2345865, now seen corresponding path program 1 times [2024-11-02 12:33:02,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:02,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259327145] [2024-11-02 12:33:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:02,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:03,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:03,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259327145] [2024-11-02 12:33:03,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259327145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:03,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:03,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:33:03,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395635714] [2024-11-02 12:33:03,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:03,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:33:03,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:03,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:33:03,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:03,188 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:03,242 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2024-11-02 12:33:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:33:03,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-02 12:33:03,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:03,262 INFO L225 Difference]: With dead ends: 14 [2024-11-02 12:33:03,262 INFO L226 Difference]: Without dead ends: 10 [2024-11-02 12:33:03,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:03,269 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:03,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:03,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-02 12:33:03,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-02 12:33:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-11-02 12:33:03,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2024-11-02 12:33:03,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:03,305 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-02 12:33:03,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:03,306 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-11-02 12:33:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:33:03,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:03,306 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 12:33:03,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:33:03,307 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-02 12:33:03,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:03,308 INFO L85 PathProgramCache]: Analyzing trace with hash 72721881, now seen corresponding path program 1 times [2024-11-02 12:33:03,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:03,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41774900] [2024-11-02 12:33:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:03,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:03,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:03,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41774900] [2024-11-02 12:33:03,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41774900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:03,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:03,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-02 12:33:03,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299680457] [2024-11-02 12:33:03,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:03,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:33:03,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:03,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:33:03,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:03,359 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:03,378 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2024-11-02 12:33:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:33:03,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-02 12:33:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:03,379 INFO L225 Difference]: With dead ends: 9 [2024-11-02 12:33:03,380 INFO L226 Difference]: Without dead ends: 8 [2024-11-02 12:33:03,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:33:03,382 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:03,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:03,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-11-02 12:33:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-02 12:33:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2024-11-02 12:33:03,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2024-11-02 12:33:03,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:03,387 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-02 12:33:03,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:03,387 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2024-11-02 12:33:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 12:33:03,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:03,388 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 12:33:03,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:33:03,389 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-02 12:33:03,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:03,390 INFO L85 PathProgramCache]: Analyzing trace with hash 72715923, now seen corresponding path program 1 times [2024-11-02 12:33:03,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:03,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485227806] [2024-11-02 12:33:03,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:03,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:03,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:03,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485227806] [2024-11-02 12:33:03,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485227806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:03,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:03,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:33:03,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270708357] [2024-11-02 12:33:03,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:03,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:33:03,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:03,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:33:03,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:33:03,582 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:03,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:03,651 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-11-02 12:33:03,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:33:03,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-02 12:33:03,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:03,653 INFO L225 Difference]: With dead ends: 16 [2024-11-02 12:33:03,653 INFO L226 Difference]: Without dead ends: 15 [2024-11-02 12:33:03,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:33:03,655 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:03,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:33:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-02 12:33:03,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-11-02 12:33:03,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:03,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-02 12:33:03,661 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2024-11-02 12:33:03,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:03,661 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-02 12:33:03,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:03,662 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-02 12:33:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:33:03,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:03,663 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-02 12:33:03,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:33:03,663 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-02 12:33:03,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1424187046, now seen corresponding path program 1 times [2024-11-02 12:33:03,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:03,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468563797] [2024-11-02 12:33:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:03,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:03,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468563797] [2024-11-02 12:33:03,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468563797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:03,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159204706] [2024-11-02 12:33:03,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:03,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:03,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:03,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:03,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:33:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:03,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 12:33:04,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:04,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:04,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159204706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:33:04,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1306073439] [2024-11-02 12:33:04,337 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2024-11-02 12:33:04,338 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:33:04,341 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:33:04,348 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:33:04,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:33:04,527 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:33:04,627 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '169#(= |ULTIMATE.start_main_~up~0#1| 1)' at error location [2024-11-02 12:33:04,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:33:04,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:04,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-02 12:33:04,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717648186] [2024-11-02 12:33:04,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:04,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 12:33:04,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:04,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 12:33:04,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-02 12:33:04,635 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:04,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:04,864 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2024-11-02 12:33:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-02 12:33:04,865 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-02 12:33:04,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:04,866 INFO L225 Difference]: With dead ends: 46 [2024-11-02 12:33:04,867 INFO L226 Difference]: Without dead ends: 39 [2024-11-02 12:33:04,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-11-02 12:33:04,874 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 32 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:04,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:33:04,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-02 12:33:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2024-11-02 12:33:04,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:04,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-02 12:33:04,886 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 9 [2024-11-02 12:33:04,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:04,886 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-02 12:33:04,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:04,891 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-02 12:33:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-02 12:33:04,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:04,892 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-02 12:33:04,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:33:05,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:05,101 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-02 12:33:05,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:05,102 INFO L85 PathProgramCache]: Analyzing trace with hash -228821841, now seen corresponding path program 2 times [2024-11-02 12:33:05,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:05,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779292918] [2024-11-02 12:33:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:05,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:05,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:05,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779292918] [2024-11-02 12:33:05,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779292918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:05,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087779336] [2024-11-02 12:33:05,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:33:05,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:05,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:05,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:05,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:33:05,666 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-02 12:33:05,666 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:33:05,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-02 12:33:05,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:05,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:06,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087779336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:33:06,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [362462618] [2024-11-02 12:33:06,046 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2024-11-02 12:33:06,048 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:33:06,048 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:33:06,049 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:33:06,049 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:33:06,153 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:33:06,240 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '417#(= |ULTIMATE.start_main_~up~0#1| 1)' at error location [2024-11-02 12:33:06,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:33:06,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:06,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2024-11-02 12:33:06,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772219291] [2024-11-02 12:33:06,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:06,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-02 12:33:06,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-02 12:33:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-11-02 12:33:06,246 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:06,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:06,856 INFO L93 Difference]: Finished difference Result 136 states and 172 transitions. [2024-11-02 12:33:06,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-02 12:33:06,857 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-02 12:33:06,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:06,859 INFO L225 Difference]: With dead ends: 136 [2024-11-02 12:33:06,862 INFO L226 Difference]: Without dead ends: 121 [2024-11-02 12:33:06,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=522, Invalid=1458, Unknown=0, NotChecked=0, Total=1980 [2024-11-02 12:33:06,866 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 85 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:06,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 15 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:33:06,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-02 12:33:06,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 60. [2024-11-02 12:33:06,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:06,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2024-11-02 12:33:06,889 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 21 [2024-11-02 12:33:06,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:06,891 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2024-11-02 12:33:06,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2024-11-02 12:33:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-02 12:33:06,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:06,892 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 1, 1] [2024-11-02 12:33:06,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 12:33:07,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:07,093 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-02 12:33:07,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:07,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1891194073, now seen corresponding path program 3 times [2024-11-02 12:33:07,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:07,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444563783] [2024-11-02 12:33:07,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:07,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:07,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:07,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444563783] [2024-11-02 12:33:07,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444563783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:07,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983641394] [2024-11-02 12:33:07,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-02 12:33:07,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:07,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:07,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:07,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:33:07,517 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-02 12:33:07,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:33:07,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-02 12:33:07,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:07,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:08,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983641394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:33:08,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1077218215] [2024-11-02 12:33:08,116 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2024-11-02 12:33:08,116 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:33:08,117 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:33:08,117 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:33:08,117 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:33:08,177 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:33:08,285 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '994#(= |ULTIMATE.start_main_~up~0#1| 1)' at error location [2024-11-02 12:33:08,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:33:08,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:08,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-11-02 12:33:08,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937252652] [2024-11-02 12:33:08,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:08,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-02 12:33:08,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:08,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-02 12:33:08,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=842, Unknown=0, NotChecked=0, Total=1190 [2024-11-02 12:33:08,289 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:09,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:09,567 INFO L93 Difference]: Finished difference Result 421 states and 532 transitions. [2024-11-02 12:33:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-02 12:33:09,568 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-02 12:33:09,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:09,571 INFO L225 Difference]: With dead ends: 421 [2024-11-02 12:33:09,571 INFO L226 Difference]: Without dead ends: 394 [2024-11-02 12:33:09,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1356, Invalid=3200, Unknown=0, NotChecked=0, Total=4556 [2024-11-02 12:33:09,574 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 218 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:09,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 43 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:33:09,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-02 12:33:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 120. [2024-11-02 12:33:09,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 119 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2024-11-02 12:33:09,596 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 45 [2024-11-02 12:33:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:09,596 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2024-11-02 12:33:09,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2024-11-02 12:33:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-02 12:33:09,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:09,599 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 1, 1] [2024-11-02 12:33:09,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 12:33:09,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-02 12:33:09,804 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-02 12:33:09,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1206715603, now seen corresponding path program 4 times [2024-11-02 12:33:09,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:09,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599403795] [2024-11-02 12:33:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:09,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:10,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:10,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599403795] [2024-11-02 12:33:10,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599403795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:10,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860019245] [2024-11-02 12:33:10,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-02 12:33:10,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:10,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:10,809 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:10,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:33:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:10,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-02 12:33:10,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:11,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:12,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860019245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:33:12,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [447491168] [2024-11-02 12:33:12,289 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2024-11-02 12:33:12,289 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:33:12,289 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:33:12,289 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:33:12,290 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:33:12,347 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:33:12,459 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2335#(= |ULTIMATE.start_main_~up~0#1| 1)' at error location [2024-11-02 12:33:12,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:33:12,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:12,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 53 [2024-11-02 12:33:12,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15100567] [2024-11-02 12:33:12,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:12,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-02 12:33:12,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:12,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-02 12:33:12,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1236, Invalid=2186, Unknown=0, NotChecked=0, Total=3422 [2024-11-02 12:33:12,465 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand has 55 states, 54 states have (on average 3.537037037037037) internal successors, (191), 54 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:16,173 INFO L93 Difference]: Finished difference Result 1423 states and 1792 transitions. [2024-11-02 12:33:16,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-02 12:33:16,174 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 3.537037037037037) internal successors, (191), 54 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-02 12:33:16,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:16,180 INFO L225 Difference]: With dead ends: 1423 [2024-11-02 12:33:16,180 INFO L226 Difference]: Without dead ends: 1372 [2024-11-02 12:33:16,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4414 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5406, Invalid=10850, Unknown=0, NotChecked=0, Total=16256 [2024-11-02 12:33:16,187 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 355 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:16,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 96 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:33:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2024-11-02 12:33:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 240. [2024-11-02 12:33:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.200836820083682) internal successors, (287), 239 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 287 transitions. [2024-11-02 12:33:16,275 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 287 transitions. Word has length 93 [2024-11-02 12:33:16,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:16,276 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 287 transitions. [2024-11-02 12:33:16,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 3.537037037037037) internal successors, (191), 54 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 287 transitions. [2024-11-02 12:33:16,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-02 12:33:16,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:16,283 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 1, 1] [2024-11-02 12:33:16,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 12:33:16,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:16,488 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-11-02 12:33:16,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:16,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1805508565, now seen corresponding path program 5 times [2024-11-02 12:33:16,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:33:16,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779652993] [2024-11-02 12:33:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:16,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:33:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 4324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:19,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:33:19,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779652993] [2024-11-02 12:33:19,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779652993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:19,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246522681] [2024-11-02 12:33:19,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:33:19,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:19,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:19,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:19,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:33:20,019 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-11-02 12:33:20,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:33:20,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-02 12:33:20,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 1424 proven. 162 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2024-11-02 12:33:20,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 1255 proven. 956 refuted. 0 times theorem prover too weak. 2113 trivial. 0 not checked. [2024-11-02 12:33:20,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246522681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:33:20,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [919417533] [2024-11-02 12:33:20,790 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2024-11-02 12:33:20,790 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:33:20,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:33:20,791 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:33:20,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:33:20,837 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:33:21,029 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5730#(= |ULTIMATE.start_main_~up~0#1| 1)' at error location [2024-11-02 12:33:21,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:33:21,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:21,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 13, 18] total 68 [2024-11-02 12:33:21,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861269639] [2024-11-02 12:33:21,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:21,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-02 12:33:21,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:33:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-02 12:33:21,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1983, Invalid=3273, Unknown=0, NotChecked=0, Total=5256 [2024-11-02 12:33:21,035 INFO L87 Difference]: Start difference. First operand 240 states and 287 transitions. Second operand has 69 states, 69 states have (on average 3.710144927536232) internal successors, (256), 68 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:22,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:22,095 INFO L93 Difference]: Finished difference Result 343 states and 414 transitions. [2024-11-02 12:33:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-02 12:33:22,099 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.710144927536232) internal successors, (256), 68 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2024-11-02 12:33:22,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:22,100 INFO L225 Difference]: With dead ends: 343 [2024-11-02 12:33:22,100 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:33:22,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1930 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3142, Invalid=5600, Unknown=0, NotChecked=0, Total=8742 [2024-11-02 12:33:22,104 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 126 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:22,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 154 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:33:22,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:33:22,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:33:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:22,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:33:22,106 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2024-11-02 12:33:22,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:22,106 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:33:22,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.710144927536232) internal successors, (256), 68 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:33:22,107 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:33:22,107 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:33:22,109 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-11-02 12:33:22,110 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-11-02 12:33:22,110 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-11-02 12:33:22,110 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-11-02 12:33:22,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 12:33:22,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:22,314 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2024-11-02 12:33:22,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 12:33:22,710 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:33:22,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:33:22 BoogieIcfgContainer [2024-11-02 12:33:22,729 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:33:22,730 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:33:22,730 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:33:22,730 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:33:22,731 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:02" (3/4) ... [2024-11-02 12:33:22,733 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:33:22,740 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-02 12:33:22,741 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-02 12:33:22,741 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-02 12:33:22,832 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:33:22,833 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:33:22,833 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:33:22,833 INFO L158 Benchmark]: Toolchain (without parser) took 20660.62ms. Allocated memory was 144.7MB in the beginning and 255.9MB in the end (delta: 111.1MB). Free memory was 103.6MB in the beginning and 165.3MB in the end (delta: -61.7MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2024-11-02 12:33:22,834 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 144.7MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:33:22,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.39ms. Allocated memory is still 144.7MB. Free memory was 103.6MB in the beginning and 92.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-02 12:33:22,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.10ms. Allocated memory is still 144.7MB. Free memory was 92.5MB in the beginning and 91.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:33:22,835 INFO L158 Benchmark]: Boogie Preprocessor took 19.00ms. Allocated memory is still 144.7MB. Free memory was 91.0MB in the beginning and 89.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:33:22,835 INFO L158 Benchmark]: RCFGBuilder took 359.14ms. Allocated memory is still 144.7MB. Free memory was 89.7MB in the beginning and 79.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-02 12:33:22,835 INFO L158 Benchmark]: TraceAbstraction took 19888.31ms. Allocated memory was 144.7MB in the beginning and 255.9MB in the end (delta: 111.1MB). Free memory was 78.4MB in the beginning and 169.5MB in the end (delta: -91.1MB). Peak memory consumption was 120.3MB. Max. memory is 16.1GB. [2024-11-02 12:33:22,836 INFO L158 Benchmark]: Witness Printer took 103.09ms. Allocated memory is still 255.9MB. Free memory was 169.5MB in the beginning and 165.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 12:33:22,838 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 144.7MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.39ms. Allocated memory is still 144.7MB. Free memory was 103.6MB in the beginning and 92.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.10ms. Allocated memory is still 144.7MB. Free memory was 92.5MB in the beginning and 91.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.00ms. Allocated memory is still 144.7MB. Free memory was 91.0MB in the beginning and 89.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 359.14ms. Allocated memory is still 144.7MB. Free memory was 89.7MB in the beginning and 79.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 19888.31ms. Allocated memory was 144.7MB in the beginning and 255.9MB in the end (delta: 111.1MB). Free memory was 78.4MB in the beginning and 169.5MB in the end (delta: -91.1MB). Peak memory consumption was 120.3MB. Max. memory is 16.1GB. * Witness Printer took 103.09ms. Allocated memory is still 255.9MB. Free memory was 169.5MB in the beginning and 165.3MB 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: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: 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 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 19.4s, OverallIterations: 8, TraceHistogramMax: 47, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 823 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 823 mSDsluCounter, 322 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 291 mSDsCounter, 487 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2034 IncrementalHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 487 mSolverCounterUnsat, 31 mSDtfsCounter, 2034 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1314 GetRequests, 960 SyntacticMatches, 1 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8326 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=7, InterpolantAutomatonStates: 275, 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, 8 MinimizatonAttempts, 1478 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 728 NumberOfCodeBlocks, 696 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 1067 ConstructedInterpolants, 0 QuantifiedInterpolants, 2843 SizeOfPredicates, 19 NumberOfNonLiveVariables, 740 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 7530/16800 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 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((((((((i <= 2147483647) && (up == 0)) || (i == 4)) || (9 == i)) || (3 == i)) || (5 == i)) || (2 == i)) || (i == 8)) || (7 == i)) || (i == 10)) || ((i == 1) && (up != 1))) || (6 == i)) RESULT: Ultimate proved your program to be correct! [2024-11-02 12:33:22,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53a94fbd-1105-4b2f-a60d-0ca76e9f2af5/bin/utaipan-verify-DbMuA5NWw2/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