./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ --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 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:14:34,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:14:34,971 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:14:34,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:14:34,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:14:35,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:14:35,010 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:14:35,011 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:14:35,012 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:14:35,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:14:35,013 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:14:35,014 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:14:35,015 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:14:35,015 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:14:35,016 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:14:35,016 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:14:35,017 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:14:35,017 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:14:35,018 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:14:35,019 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:14:35,019 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:14:35,020 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:14:35,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:14:35,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:14:35,022 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:14:35,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:14:35,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:14:35,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:14:35,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:14:35,024 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:14:35,024 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:14:35,025 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:14:35,025 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:14:35,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:14:35,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:14:35,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:35,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:14:35,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:14:35,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:14:35,041 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:14:35,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:14:35,042 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:14:35,043 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:14:35,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:14:35,043 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_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 [2023-11-19 05:14:35,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:14:35,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:14:35,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:14:35,323 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:14:35,324 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:14:35,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2023-11-19 05:14:38,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:14:38,589 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:14:38,589 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2023-11-19 05:14:38,597 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/data/0b41fd0d8/1964f47eae2847f697b3352bf16c2966/FLAGd860fef8d [2023-11-19 05:14:38,611 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/data/0b41fd0d8/1964f47eae2847f697b3352bf16c2966 [2023-11-19 05:14:38,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:14:38,616 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:14:38,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:38,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:14:38,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:14:38,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ddb1eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38, skipping insertion in model container [2023-11-19 05:14:38,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,668 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:14:38,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:38,841 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:14:38,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:38,867 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:14:38,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38 WrapperNode [2023-11-19 05:14:38,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:38,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:38,868 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:14:38,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:14:38,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,892 INFO L138 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9 [2023-11-19 05:14:38,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:38,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:14:38,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:14:38,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:14:38,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:14:38,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:14:38,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:14:38,914 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:14:38,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38" (1/1) ... [2023-11-19 05:14:38,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:38,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:38,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:14:38,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:14:39,004 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-19 05:14:39,004 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-19 05:14:39,004 INFO L130 BoogieDeclarations]: Found specification of procedure g [2023-11-19 05:14:39,004 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2023-11-19 05:14:39,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:14:39,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:14:39,074 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:14:39,084 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:14:39,244 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:14:39,264 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:14:39,264 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:14:39,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:39 BoogieIcfgContainer [2023-11-19 05:14:39,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:14:39,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:14:39,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:14:39,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:14:39,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:14:38" (1/3) ... [2023-11-19 05:14:39,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175965d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:39, skipping insertion in model container [2023-11-19 05:14:39,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:38" (2/3) ... [2023-11-19 05:14:39,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175965d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:39, skipping insertion in model container [2023-11-19 05:14:39,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:39" (3/3) ... [2023-11-19 05:14:39,280 INFO L112 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2023-11-19 05:14:39,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:14:39,297 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-19 05:14:39,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:14:39,355 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@521b8552, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:14:39,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 05:14:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 32 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:14:39,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:14:39,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:39,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:14:39,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-19 05:14:39,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:39,377 INFO L85 PathProgramCache]: Analyzing trace with hash 83879668, now seen corresponding path program 1 times [2023-11-19 05:14:39,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:39,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144042828] [2023-11-19 05:14:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:39,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:39,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144042828] [2023-11-19 05:14:39,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144042828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:39,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:39,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:14:39,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046592954] [2023-11-19 05:14:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:39,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:39,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:39,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:39,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:39,705 INFO L87 Difference]: Start difference. First operand has 40 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 32 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:39,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:39,779 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2023-11-19 05:14:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:39,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 05:14:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:39,791 INFO L225 Difference]: With dead ends: 42 [2023-11-19 05:14:39,792 INFO L226 Difference]: Without dead ends: 38 [2023-11-19 05:14:39,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:39,799 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:39,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 64 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:14:39,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-19 05:14:39,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2023-11-19 05:14:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 29 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:14:39,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2023-11-19 05:14:39,840 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 5 [2023-11-19 05:14:39,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:39,841 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2023-11-19 05:14:39,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:39,841 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2023-11-19 05:14:39,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:14:39,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:39,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:14:39,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:14:39,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-19 05:14:39,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:39,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1694697532, now seen corresponding path program 1 times [2023-11-19 05:14:39,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:39,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442619110] [2023-11-19 05:14:39,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:39,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:39,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:39,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:39,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442619110] [2023-11-19 05:14:39,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442619110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:39,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:39,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:14:39,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045361338] [2023-11-19 05:14:39,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:39,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:14:39,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:39,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:14:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:14:39,911 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:39,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:39,993 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2023-11-19 05:14:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:14:39,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:14:39,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:39,996 INFO L225 Difference]: With dead ends: 56 [2023-11-19 05:14:39,996 INFO L226 Difference]: Without dead ends: 52 [2023-11-19 05:14:39,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:14:39,998 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 26 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:39,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 129 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:14:40,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-19 05:14:40,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2023-11-19 05:14:40,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 38 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:14:40,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2023-11-19 05:14:40,013 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2023-11-19 05:14:40,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:40,013 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2023-11-19 05:14:40,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:40,014 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2023-11-19 05:14:40,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:14:40,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:40,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:40,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:14:40,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-19 05:14:40,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash 570216194, now seen corresponding path program 1 times [2023-11-19 05:14:40,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:40,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020955293] [2023-11-19 05:14:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:40,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:14:40,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:40,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020955293] [2023-11-19 05:14:40,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020955293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:40,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:40,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:14:40,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249813648] [2023-11-19 05:14:40,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:40,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:14:40,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:40,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:14:40,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:14:40,243 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:40,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:40,485 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2023-11-19 05:14:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:14:40,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 05:14:40,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:40,488 INFO L225 Difference]: With dead ends: 66 [2023-11-19 05:14:40,488 INFO L226 Difference]: Without dead ends: 63 [2023-11-19 05:14:40,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:14:40,492 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 74 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:40,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 154 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:14:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-19 05:14:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2023-11-19 05:14:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 46 states have internal predecessors, (53), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:14:40,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2023-11-19 05:14:40,509 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 14 [2023-11-19 05:14:40,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:40,510 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2023-11-19 05:14:40,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:40,511 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2023-11-19 05:14:40,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:14:40,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:40,512 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:40,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:14:40,513 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-19 05:14:40,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:40,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1778504853, now seen corresponding path program 1 times [2023-11-19 05:14:40,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:40,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252002567] [2023-11-19 05:14:40,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:40,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:14:40,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:40,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252002567] [2023-11-19 05:14:40,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252002567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:40,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:40,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:14:40,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017548263] [2023-11-19 05:14:40,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:40,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:14:40,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:40,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:14:40,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:40,588 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:14:40,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:40,621 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2023-11-19 05:14:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:14:40,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-19 05:14:40,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:40,624 INFO L225 Difference]: With dead ends: 61 [2023-11-19 05:14:40,625 INFO L226 Difference]: Without dead ends: 60 [2023-11-19 05:14:40,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:14:40,630 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:40,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 60 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:14:40,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-19 05:14:40,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-11-19 05:14:40,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 45 states have internal predecessors, (52), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:14:40,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2023-11-19 05:14:40,667 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 16 [2023-11-19 05:14:40,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:40,668 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2023-11-19 05:14:40,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:14:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2023-11-19 05:14:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 05:14:40,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:40,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:40,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:14:40,673 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-19 05:14:40,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2131483704, now seen corresponding path program 1 times [2023-11-19 05:14:40,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:40,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479103869] [2023-11-19 05:14:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:40,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:14:40,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:40,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479103869] [2023-11-19 05:14:40,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479103869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:40,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:40,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:14:40,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656496777] [2023-11-19 05:14:40,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:40,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:14:40,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:40,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:14:40,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:14:40,807 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:14:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:40,872 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2023-11-19 05:14:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:14:40,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-11-19 05:14:40,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:40,876 INFO L225 Difference]: With dead ends: 93 [2023-11-19 05:14:40,876 INFO L226 Difference]: Without dead ends: 92 [2023-11-19 05:14:40,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:14:40,879 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:40,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 123 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:14:40,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-19 05:14:40,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2023-11-19 05:14:40,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 59 states have internal predecessors, (68), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (20), 14 states have call predecessors, (20), 11 states have call successors, (20) [2023-11-19 05:14:40,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2023-11-19 05:14:40,898 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2023-11-19 05:14:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:40,899 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2023-11-19 05:14:40,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:14:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2023-11-19 05:14:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 05:14:40,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:40,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:40,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:14:40,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-19 05:14:40,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:40,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1651485452, now seen corresponding path program 1 times [2023-11-19 05:14:40,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:40,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930741459] [2023-11-19 05:14:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:40,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:14:41,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:41,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930741459] [2023-11-19 05:14:41,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930741459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:41,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:41,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:14:41,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726500219] [2023-11-19 05:14:41,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:41,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:14:41,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:14:41,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:14:41,030 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:14:41,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:41,124 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2023-11-19 05:14:41,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:14:41,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-11-19 05:14:41,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:41,129 INFO L225 Difference]: With dead ends: 93 [2023-11-19 05:14:41,132 INFO L226 Difference]: Without dead ends: 89 [2023-11-19 05:14:41,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:14:41,140 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:41,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-19 05:14:41,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2023-11-19 05:14:41,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 60 states have internal predecessors, (68), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2023-11-19 05:14:41,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2023-11-19 05:14:41,169 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2023-11-19 05:14:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:41,176 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2023-11-19 05:14:41,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:14:41,176 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2023-11-19 05:14:41,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:14:41,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:41,180 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:41,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:14:41,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-19 05:14:41,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:41,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1194784516, now seen corresponding path program 1 times [2023-11-19 05:14:41,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:41,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7135285] [2023-11-19 05:14:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:41,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:14:41,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:41,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7135285] [2023-11-19 05:14:41,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7135285] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:14:41,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15716890] [2023-11-19 05:14:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:41,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:14:41,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:41,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:14:41,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:14:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:41,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:14:41,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:14:41,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:14:41,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15716890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:41,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:14:41,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2023-11-19 05:14:41,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463964947] [2023-11-19 05:14:41,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:41,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:14:41,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:41,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:14:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:14:41,425 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:14:41,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:41,509 INFO L93 Difference]: Finished difference Result 149 states and 199 transitions. [2023-11-19 05:14:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:14:41,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-11-19 05:14:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:41,512 INFO L225 Difference]: With dead ends: 149 [2023-11-19 05:14:41,512 INFO L226 Difference]: Without dead ends: 78 [2023-11-19 05:14:41,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:14:41,516 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 23 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:41,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 79 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:41,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-19 05:14:41,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-19 05:14:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 60 states have internal predecessors, (66), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2023-11-19 05:14:41,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2023-11-19 05:14:41,531 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 24 [2023-11-19 05:14:41,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:41,531 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2023-11-19 05:14:41,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:14:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2023-11-19 05:14:41,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 05:14:41,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:41,535 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:41,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:41,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:14:41,759 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-19 05:14:41,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:41,760 INFO L85 PathProgramCache]: Analyzing trace with hash 846882970, now seen corresponding path program 1 times [2023-11-19 05:14:41,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:41,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721110852] [2023-11-19 05:14:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:41,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 05:14:41,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:14:41,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721110852] [2023-11-19 05:14:41,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721110852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:14:41,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013922826] [2023-11-19 05:14:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:41,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:14:41,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:41,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:14:41,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:14:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:42,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:14:42,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 05:14:42,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:14:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 05:14:42,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013922826] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:14:42,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1635673283] [2023-11-19 05:14:42,488 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-11-19 05:14:42,489 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:14:42,494 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 05:14:42,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:14:42,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2023-11-19 05:14:42,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219722211] [2023-11-19 05:14:42,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:14:42,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:14:42,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:14:42,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:14:42,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:14:42,501 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-19 05:14:42,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:42,616 INFO L93 Difference]: Finished difference Result 115 states and 144 transitions. [2023-11-19 05:14:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:14:42,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 60 [2023-11-19 05:14:42,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:42,618 INFO L225 Difference]: With dead ends: 115 [2023-11-19 05:14:42,618 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:14:42,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 114 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:14:42,621 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:42,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 51 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:14:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:14:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:14:42,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:14:42,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:14:42,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2023-11-19 05:14:42,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:42,624 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:14:42,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-19 05:14:42,625 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:14:42,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:14:42,629 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-11-19 05:14:42,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-11-19 05:14:42,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-19 05:14:42,632 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-19 05:14:42,633 INFO L805 garLoopResultBuilder]: Registering result SAFE for location gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-19 05:14:42,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-19 05:14:42,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-19 05:14:42,634 INFO L805 garLoopResultBuilder]: Registering result SAFE for location gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-19 05:14:42,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-19 05:14:42,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-11-19 05:14:42,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:42,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 05:14:42,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:14:43,002 INFO L899 garLoopResultBuilder]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2023-11-19 05:14:43,003 INFO L895 garLoopResultBuilder]: At program point L14(line 14) the Hoare annotation is: (or (and (<= f_~x 2147483646) (<= |f_#in~x| f_~x) (<= 1 f_~x)) (< 2147483646 |f_#in~x|)) [2023-11-19 05:14:43,003 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-11-19 05:14:43,003 INFO L899 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2023-11-19 05:14:43,004 INFO L899 garLoopResultBuilder]: For program point L14-2(line 14) no Hoare annotation was computed. [2023-11-19 05:14:43,004 INFO L899 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2023-11-19 05:14:43,004 INFO L895 garLoopResultBuilder]: At program point L14-4(line 14) the Hoare annotation is: (or (and (<= f_~x 2147483646) (<= |f_#in~x| f_~x) (<= 1 f_~x)) (< 2147483646 |f_#in~x|)) [2023-11-19 05:14:43,004 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 15) the Hoare annotation is: true [2023-11-19 05:14:43,005 INFO L899 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2023-11-19 05:14:43,005 INFO L899 garLoopResultBuilder]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-11-19 05:14:43,005 INFO L899 garLoopResultBuilder]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-11-19 05:14:43,005 INFO L899 garLoopResultBuilder]: For program point L14-6(line 14) no Hoare annotation was computed. [2023-11-19 05:14:43,005 INFO L899 garLoopResultBuilder]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2023-11-19 05:14:43,006 INFO L899 garLoopResultBuilder]: For program point L14-7(line 14) no Hoare annotation was computed. [2023-11-19 05:14:43,006 INFO L899 garLoopResultBuilder]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-11-19 05:14:43,006 INFO L899 garLoopResultBuilder]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-11-19 05:14:43,006 INFO L899 garLoopResultBuilder]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2023-11-19 05:14:43,006 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,007 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 20) no Hoare annotation was computed. [2023-11-19 05:14:43,007 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,007 INFO L895 garLoopResultBuilder]: At program point L20-2(line 20) the Hoare annotation is: (and (or (< 2147483646 |g_#in~x|) (<= g_~x 2147483646)) (or (< 2147483647 |g_#in~x|) (and (<= |g_#in~x| g_~x) (<= g_~x 2147483647) (<= 1 g_~x)))) [2023-11-19 05:14:43,007 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,007 INFO L899 garLoopResultBuilder]: For program point L20-4(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,008 INFO L899 garLoopResultBuilder]: For program point L20-5(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,008 INFO L895 garLoopResultBuilder]: At program point L20-6(line 20) the Hoare annotation is: (and (or (< 2147483646 |g_#in~x|) (<= g_~x 2147483646)) (or (and (<= 1 g_~x) (<= |g_#in~x| 1) (= |g_#t~ret2| 0)) (< 2147483647 |g_#in~x|))) [2023-11-19 05:14:43,008 INFO L899 garLoopResultBuilder]: For program point L20-7(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,008 INFO L899 garLoopResultBuilder]: For program point L20-8(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,009 INFO L899 garLoopResultBuilder]: For program point L20-9(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,009 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 21) the Hoare annotation is: true [2023-11-19 05:14:43,009 INFO L899 garLoopResultBuilder]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,009 INFO L899 garLoopResultBuilder]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2023-11-19 05:14:43,009 INFO L899 garLoopResultBuilder]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,010 INFO L899 garLoopResultBuilder]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,010 INFO L899 garLoopResultBuilder]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,010 INFO L899 garLoopResultBuilder]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,010 INFO L899 garLoopResultBuilder]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-19 05:14:43,010 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:14:43,011 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647) [2023-11-19 05:14:43,011 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:14:43,011 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2023-11-19 05:14:43,015 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:43,018 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:14:43,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:14:43 BoogieIcfgContainer [2023-11-19 05:14:43,029 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:14:43,030 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:14:43,030 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:14:43,030 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:14:43,031 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:39" (3/4) ... [2023-11-19 05:14:43,033 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:14:43,038 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2023-11-19 05:14:43,038 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2023-11-19 05:14:43,050 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-19 05:14:43,051 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 05:14:43,051 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 05:14:43,161 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:14:43,161 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:14:43,162 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:14:43,163 INFO L158 Benchmark]: Toolchain (without parser) took 4547.00ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 60.8MB in the beginning and 109.5MB in the end (delta: -48.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:14:43,163 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:14:43,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.93ms. Allocated memory is still 159.4MB. Free memory was 130.9MB in the beginning and 125.0MB in the end (delta: 5.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2023-11-19 05:14:43,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.63ms. Allocated memory is still 159.4MB. Free memory was 125.0MB in the beginning and 123.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:14:43,165 INFO L158 Benchmark]: Boogie Preprocessor took 18.81ms. Allocated memory is still 159.4MB. Free memory was 123.5MB in the beginning and 122.8MB in the end (delta: 745.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:14:43,165 INFO L158 Benchmark]: RCFGBuilder took 357.07ms. Allocated memory is still 159.4MB. Free memory was 122.8MB in the beginning and 111.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:14:43,166 INFO L158 Benchmark]: TraceAbstraction took 3756.11ms. Allocated memory is still 159.4MB. Free memory was 110.3MB in the beginning and 113.7MB in the end (delta: -3.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:14:43,166 INFO L158 Benchmark]: Witness Printer took 132.31ms. Allocated memory is still 159.4MB. Free memory was 113.7MB in the beginning and 109.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:14:43,169 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.93ms. Allocated memory is still 159.4MB. Free memory was 130.9MB in the beginning and 125.0MB in the end (delta: 5.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.63ms. Allocated memory is still 159.4MB. Free memory was 125.0MB in the beginning and 123.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.81ms. Allocated memory is still 159.4MB. Free memory was 123.5MB in the beginning and 122.8MB in the end (delta: 745.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 357.07ms. Allocated memory is still 159.4MB. Free memory was 122.8MB in the beginning and 111.0MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3756.11ms. Allocated memory is still 159.4MB. Free memory was 110.3MB in the beginning and 113.7MB in the end (delta: -3.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 132.31ms. Allocated memory is still 159.4MB. Free memory was 113.7MB in the beginning and 109.5MB 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: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 40 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 183 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 171 mSDsluCounter, 783 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 540 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 369 IncrementalHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 243 mSDtfsCounter, 369 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 188 GetRequests, 144 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=5, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 37 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 82 PreInvPairs, 91 NumberOfFragments, 77 HoareAnnotationTreeSize, 82 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 58 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 301 ConstructedInterpolants, 0 QuantifiedInterpolants, 559 SizeOfPredicates, 3 NumberOfNonLiveVariables, 170 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 186/198 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 05:14:43,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58fa701-cb63-4cd6-ab37-76166e6cbc6b/bin/utaipan-verify-t7M7D8N6sZ/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