./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh --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 f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:23:43,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:23:43,723 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 17:23:43,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:23:43,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:23:43,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:23:43,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:23:43,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:23:43,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:23:43,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:23:43,755 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:23:43,755 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:23:43,756 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:23:43,756 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:23:43,757 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:23:43,757 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:23:43,758 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:23:43,758 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:23:43,759 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:23:43,759 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:23:43,760 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:23:43,764 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:23:43,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:23:43,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:23:43,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:23:43,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:23:43,767 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:23:43,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:23:43,767 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:23:43,768 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 17:23:43,768 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:23:43,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:23:43,769 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:23:43,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:23:43,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:23:43,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:23:43,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:23:43,770 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:23:43,770 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:23:43,770 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:23:43,771 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:23:43,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:23:43,771 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:23:43,771 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:23:43,772 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:23:43,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:23:43,772 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_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 [2023-12-02 17:23:44,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:23:44,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:23:44,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:23:44,026 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:23:44,026 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:23:44,028 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2023-12-02 17:23:46,697 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:23:46,866 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:23:46,866 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2023-12-02 17:23:46,872 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/data/90a0f3f89/d1674ea3bc874f3485a165f0324f570c/FLAGa03f6470a [2023-12-02 17:23:46,886 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/data/90a0f3f89/d1674ea3bc874f3485a165f0324f570c [2023-12-02 17:23:46,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:23:46,890 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:23:46,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:23:46,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:23:46,897 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:23:46,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:23:46" (1/1) ... [2023-12-02 17:23:46,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79142414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:46, skipping insertion in model container [2023-12-02 17:23:46,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:23:46" (1/1) ... [2023-12-02 17:23:46,918 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:23:47,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:23:47,069 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:23:47,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:23:47,093 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:23:47,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47 WrapperNode [2023-12-02 17:23:47,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:23:47,094 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:23:47,094 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:23:47,094 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:23:47,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47" (1/1) ... [2023-12-02 17:23:47,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47" (1/1) ... [2023-12-02 17:23:47,115 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9 [2023-12-02 17:23:47,115 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:23:47,116 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:23:47,116 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:23:47,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:23:47,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47" (1/1) ... [2023-12-02 17:23:47,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47" (1/1) ... [2023-12-02 17:23:47,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47" (1/1) ... [2023-12-02 17:23:47,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47" (1/1) ... [2023-12-02 17:23:47,127 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47" (1/1) ... [2023-12-02 17:23:47,128 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47" (1/1) ... [2023-12-02 17:23:47,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47" (1/1) ... [2023-12-02 17:23:47,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47" (1/1) ... [2023-12-02 17:23:47,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:23:47,132 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:23:47,132 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:23:47,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:23:47,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47" (1/1) ... [2023-12-02 17:23:47,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:23:47,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:23:47,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:23:47,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:23:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2023-12-02 17:23:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2023-12-02 17:23:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2023-12-02 17:23:47,197 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2023-12-02 17:23:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:23:47,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:23:47,246 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:23:47,248 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:23:47,383 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:23:47,402 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:23:47,402 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 17:23:47,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:23:47 BoogieIcfgContainer [2023-12-02 17:23:47,404 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:23:47,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:23:47,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:23:47,411 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:23:47,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:23:46" (1/3) ... [2023-12-02 17:23:47,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:23:47, skipping insertion in model container [2023-12-02 17:23:47,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:23:47" (2/3) ... [2023-12-02 17:23:47,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:23:47, skipping insertion in model container [2023-12-02 17:23:47,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:23:47" (3/3) ... [2023-12-02 17:23:47,414 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1c.c [2023-12-02 17:23:47,434 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:23:47,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-12-02 17:23:47,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:23:47,487 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;@7054a15f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:23:47,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-12-02 17:23:47,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 33 states have internal predecessors, (35), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 17:23:47,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 17:23:47,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:23:47,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 17:23:47,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-12-02 17:23:47,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:23:47,505 INFO L85 PathProgramCache]: Analyzing trace with hash 87698874, now seen corresponding path program 1 times [2023-12-02 17:23:47,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:23:47,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012861522] [2023-12-02 17:23:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:23:47,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:23:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:23:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:23:47,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:23:47,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012861522] [2023-12-02 17:23:47,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012861522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:23:47,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:23:47,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:23:47,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289520864] [2023-12-02 17:23:47,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:23:47,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:23:47,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:23:47,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:23:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:23:47,668 INFO L87 Difference]: Start difference. First operand has 42 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 33 states have internal predecessors, (35), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2023-12-02 17:23:47,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:23:47,707 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2023-12-02 17:23:47,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:23:47,709 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 [2023-12-02 17:23:47,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:23:47,716 INFO L225 Difference]: With dead ends: 44 [2023-12-02 17:23:47,716 INFO L226 Difference]: Without dead ends: 41 [2023-12-02 17:23:47,719 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 [2023-12-02 17:23:47,722 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 10 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:23:47,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 75 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:23:47,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-02 17:23:47,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2023-12-02 17:23:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.5) internal successors, (33), 31 states have internal predecessors, (33), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:23:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2023-12-02 17:23:47,754 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 5 [2023-12-02 17:23:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:23:47,754 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2023-12-02 17:23:47,754 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) [2023-12-02 17:23:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2023-12-02 17:23:47,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 17:23:47,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:23:47,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 17:23:47,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:23:47,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-12-02 17:23:47,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:23:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1576302140, now seen corresponding path program 1 times [2023-12-02 17:23:47,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:23:47,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401330046] [2023-12-02 17:23:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:23:47,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:23:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:23:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:23:47,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:23:47,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401330046] [2023-12-02 17:23:47,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401330046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:23:47,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:23:47,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:23:47,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310707794] [2023-12-02 17:23:47,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:23:47,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:23:47,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:23:47,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:23:47,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:23:47,822 INFO L87 Difference]: Start difference. First operand 39 states and 44 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) [2023-12-02 17:23:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:23:47,879 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-12-02 17:23:47,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:23:47,880 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 [2023-12-02 17:23:47,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:23:47,881 INFO L225 Difference]: With dead ends: 39 [2023-12-02 17:23:47,881 INFO L226 Difference]: Without dead ends: 38 [2023-12-02 17:23:47,882 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 [2023-12-02 17:23:47,884 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 21 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:23:47,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 124 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:23:47,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-02 17:23:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-02 17:23:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 30 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:23:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-12-02 17:23:47,894 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2023-12-02 17:23:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:23:47,894 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-12-02 17:23:47,895 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) [2023-12-02 17:23:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-12-02 17:23:47,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 17:23:47,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:23:47,896 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:23:47,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:23:47,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-12-02 17:23:47,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:23:47,898 INFO L85 PathProgramCache]: Analyzing trace with hash -280367133, now seen corresponding path program 1 times [2023-12-02 17:23:47,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:23:47,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927826375] [2023-12-02 17:23:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:23:47,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:23:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:23:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:23:47,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:23:47,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927826375] [2023-12-02 17:23:47,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927826375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:23:47,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:23:47,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:23:47,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110429256] [2023-12-02 17:23:47,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:23:47,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:23:47,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:23:47,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:23:47,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:23:47,950 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 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) [2023-12-02 17:23:47,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:23:47,968 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2023-12-02 17:23:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:23:47,969 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), 1 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 [2023-12-02 17:23:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:23:47,970 INFO L225 Difference]: With dead ends: 40 [2023-12-02 17:23:47,971 INFO L226 Difference]: Without dead ends: 39 [2023-12-02 17:23:47,971 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 [2023-12-02 17:23:47,973 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 15 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:23:47,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 65 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:23:47,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-02 17:23:47,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2023-12-02 17:23:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 29 states have internal predecessors, (31), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:23:47,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-12-02 17:23:47,984 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 16 [2023-12-02 17:23:47,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:23:47,984 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-12-02 17:23:47,985 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), 1 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) [2023-12-02 17:23:47,985 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-12-02 17:23:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 17:23:47,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:23:47,986 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:23:47,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:23:47,986 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-12-02 17:23:47,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:23:47,987 INFO L85 PathProgramCache]: Analyzing trace with hash -101446493, now seen corresponding path program 1 times [2023-12-02 17:23:47,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:23:47,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558705346] [2023-12-02 17:23:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:23:47,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:23:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:23:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:23:48,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:23:48,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558705346] [2023-12-02 17:23:48,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558705346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:23:48,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:23:48,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:23:48,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19717972] [2023-12-02 17:23:48,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:23:48,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:23:48,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:23:48,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:23:48,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:23:48,084 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:23:48,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:23:48,136 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2023-12-02 17:23:48,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:23:48,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 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 17 [2023-12-02 17:23:48,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:23:48,138 INFO L225 Difference]: With dead ends: 82 [2023-12-02 17:23:48,139 INFO L226 Difference]: Without dead ends: 52 [2023-12-02 17:23:48,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:23:48,141 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:23:48,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 176 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:23:48,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-02 17:23:48,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2023-12-02 17:23:48,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 17:23:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2023-12-02 17:23:48,154 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 17 [2023-12-02 17:23:48,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:23:48,155 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2023-12-02 17:23:48,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:23:48,156 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2023-12-02 17:23:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 17:23:48,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:23:48,157 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:23:48,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:23:48,157 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-12-02 17:23:48,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:23:48,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1293802086, now seen corresponding path program 1 times [2023-12-02 17:23:48,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:23:48,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686562548] [2023-12-02 17:23:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:23:48,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:23:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:23:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:23:48,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:23:48,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686562548] [2023-12-02 17:23:48,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686562548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:23:48,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:23:48,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:23:48,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3546828] [2023-12-02 17:23:48,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:23:48,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:23:48,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:23:48,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:23:48,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:23:48,213 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:23:48,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:23:48,240 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2023-12-02 17:23:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:23:48,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-12-02 17:23:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:23:48,243 INFO L225 Difference]: With dead ends: 51 [2023-12-02 17:23:48,243 INFO L226 Difference]: Without dead ends: 50 [2023-12-02 17:23:48,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:23:48,245 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:23:48,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 108 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:23:48,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-02 17:23:48,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2023-12-02 17:23:48,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.3) internal successors, (39), 38 states have internal predecessors, (39), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-12-02 17:23:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-12-02 17:23:48,256 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 19 [2023-12-02 17:23:48,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:23:48,257 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-12-02 17:23:48,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:23:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-12-02 17:23:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 17:23:48,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:23:48,258 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:23:48,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 17:23:48,258 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-12-02 17:23:48,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:23:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1453159072, now seen corresponding path program 1 times [2023-12-02 17:23:48,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:23:48,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475304463] [2023-12-02 17:23:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:23:48,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:23:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:23:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:23:48,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:23:48,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475304463] [2023-12-02 17:23:48,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475304463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:23:48,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:23:48,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:23:48,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505083212] [2023-12-02 17:23:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:23:48,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:23:48,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:23:48,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:23:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:23:48,313 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:23:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:23:48,325 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2023-12-02 17:23:48,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:23:48,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-12-02 17:23:48,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:23:48,327 INFO L225 Difference]: With dead ends: 49 [2023-12-02 17:23:48,327 INFO L226 Difference]: Without dead ends: 48 [2023-12-02 17:23:48,327 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 [2023-12-02 17:23:48,328 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 73 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 [2023-12-02 17:23:48,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 73 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:23:48,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-02 17:23:48,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-02 17:23:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 37 states have internal predecessors, (38), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-12-02 17:23:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2023-12-02 17:23:48,337 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 20 [2023-12-02 17:23:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:23:48,338 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2023-12-02 17:23:48,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:23:48,338 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2023-12-02 17:23:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 17:23:48,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:23:48,339 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:23:48,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 17:23:48,340 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-12-02 17:23:48,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:23:48,340 INFO L85 PathProgramCache]: Analyzing trace with hash 88890754, now seen corresponding path program 1 times [2023-12-02 17:23:48,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:23:48,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168229716] [2023-12-02 17:23:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:23:48,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:23:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:23:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 17:23:48,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:23:48,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168229716] [2023-12-02 17:23:48,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168229716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:23:48,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:23:48,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 17:23:48,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295013510] [2023-12-02 17:23:48,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:23:48,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 17:23:48,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:23:48,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 17:23:48,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:23:48,468 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 17:23:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:23:48,547 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2023-12-02 17:23:48,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:23:48,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2023-12-02 17:23:48,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:23:48,548 INFO L225 Difference]: With dead ends: 62 [2023-12-02 17:23:48,548 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 17:23:48,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:23:48,551 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:23:48,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 118 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:23:48,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 17:23:48,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 17:23:48,552 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) [2023-12-02 17:23:48,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 17:23:48,552 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2023-12-02 17:23:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:23:48,552 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 17:23:48,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 17:23:48,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 17:23:48,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 17:23:48,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-12-02 17:23:48,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-12-02 17:23:48,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-12-02 17:23:48,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-12-02 17:23:48,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-12-02 17:23:48,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-12-02 17:23:48,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-12-02 17:23:48,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-12-02 17:23:48,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-12-02 17:23:48,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-12-02 17:23:48,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 17:23:48,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 17:23:48,625 INFO L899 garLoopResultBuilder]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,625 INFO L899 garLoopResultBuilder]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2023-12-02 17:23:48,625 INFO L899 garLoopResultBuilder]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,625 INFO L899 garLoopResultBuilder]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2023-12-02 17:23:48,625 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,626 INFO L899 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,626 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-12-02 17:23:48,626 INFO L895 garLoopResultBuilder]: At program point L14-2(line 14) the Hoare annotation is: (< 0 |rec1_#in~i|) [2023-12-02 17:23:48,626 INFO L899 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,626 INFO L899 garLoopResultBuilder]: For program point L14-4(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,626 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 15) the Hoare annotation is: true [2023-12-02 17:23:48,626 INFO L899 garLoopResultBuilder]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,627 INFO L899 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,627 INFO L895 garLoopResultBuilder]: At program point L14-6(line 14) the Hoare annotation is: (< 0 |rec1_#in~i|) [2023-12-02 17:23:48,627 INFO L899 garLoopResultBuilder]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,627 INFO L899 garLoopResultBuilder]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,627 INFO L899 garLoopResultBuilder]: For program point L14-7(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,627 INFO L899 garLoopResultBuilder]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,627 INFO L895 garLoopResultBuilder]: At program point L14-8(line 14) the Hoare annotation is: (< 0 |rec1_#in~i|) [2023-12-02 17:23:48,627 INFO L899 garLoopResultBuilder]: For program point L14-9(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,627 INFO L899 garLoopResultBuilder]: For program point L14-10(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,628 INFO L899 garLoopResultBuilder]: For program point L14-11(line 14) no Hoare annotation was computed. [2023-12-02 17:23:48,628 INFO L899 garLoopResultBuilder]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-12-02 17:23:48,628 INFO L899 garLoopResultBuilder]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2023-12-02 17:23:48,628 INFO L899 garLoopResultBuilder]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2023-12-02 17:23:48,628 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-02 17:23:48,628 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2023-12-02 17:23:48,628 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2023-12-02 17:23:48,628 INFO L895 garLoopResultBuilder]: At program point L20-2(line 20) the Hoare annotation is: (or (and (<= 1 rec2_~j) (<= rec2_~j 2147483647)) (< 2147483647 |rec2_#in~j|)) [2023-12-02 17:23:48,628 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2023-12-02 17:23:48,629 INFO L895 garLoopResultBuilder]: At program point L20-4(line 20) the Hoare annotation is: (or (and (<= |rec2_#t~ret3| 0) (<= 1 rec2_~j) (<= rec2_~j 2147483647)) (< 2147483647 |rec2_#in~j|)) [2023-12-02 17:23:48,629 INFO L899 garLoopResultBuilder]: For program point L20-5(line 20) no Hoare annotation was computed. [2023-12-02 17:23:48,629 INFO L899 garLoopResultBuilder]: For program point L20-6(line 20) no Hoare annotation was computed. [2023-12-02 17:23:48,629 INFO L899 garLoopResultBuilder]: For program point L20-7(line 20) no Hoare annotation was computed. [2023-12-02 17:23:48,629 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 21) the Hoare annotation is: true [2023-12-02 17:23:48,629 INFO L899 garLoopResultBuilder]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-12-02 17:23:48,629 INFO L899 garLoopResultBuilder]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-12-02 17:23:48,629 INFO L899 garLoopResultBuilder]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-12-02 17:23:48,630 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 17:23:48,630 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 17:23:48,630 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647) [2023-12-02 17:23:48,630 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-12-02 17:23:48,633 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:23:48,634 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:23:48,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:23:48 BoogieIcfgContainer [2023-12-02 17:23:48,639 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:23:48,640 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:23:48,640 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:23:48,640 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:23:48,641 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:23:47" (3/4) ... [2023-12-02 17:23:48,642 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 17:23:48,646 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2023-12-02 17:23:48,646 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2023-12-02 17:23:48,651 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-12-02 17:23:48,651 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-12-02 17:23:48,652 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-02 17:23:48,728 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 17:23:48,728 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 17:23:48,729 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:23:48,729 INFO L158 Benchmark]: Toolchain (without parser) took 1838.92ms. Allocated memory is still 178.3MB. Free memory was 141.1MB in the beginning and 114.5MB in the end (delta: 26.5MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2023-12-02 17:23:48,729 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 178.3MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:23:48,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.06ms. Allocated memory is still 178.3MB. Free memory was 141.1MB in the beginning and 131.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 17:23:48,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.03ms. Allocated memory is still 178.3MB. Free memory was 131.2MB in the beginning and 130.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:23:48,731 INFO L158 Benchmark]: Boogie Preprocessor took 15.23ms. Allocated memory is still 178.3MB. Free memory was 130.0MB in the beginning and 129.1MB in the end (delta: 831.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:23:48,731 INFO L158 Benchmark]: RCFGBuilder took 272.57ms. Allocated memory is still 178.3MB. Free memory was 129.1MB in the beginning and 118.0MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 17:23:48,731 INFO L158 Benchmark]: TraceAbstraction took 1231.39ms. Allocated memory is still 178.3MB. Free memory was 117.4MB in the beginning and 118.7MB in the end (delta: -1.3MB). Peak memory consumption was 592.5kB. Max. memory is 16.1GB. [2023-12-02 17:23:48,732 INFO L158 Benchmark]: Witness Printer took 88.89ms. Allocated memory is still 178.3MB. Free memory was 118.7MB in the beginning and 114.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 17:23:48,734 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 178.3MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.06ms. Allocated memory is still 178.3MB. Free memory was 141.1MB in the beginning and 131.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.03ms. Allocated memory is still 178.3MB. Free memory was 131.2MB in the beginning and 130.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.23ms. Allocated memory is still 178.3MB. Free memory was 130.0MB in the beginning and 129.1MB in the end (delta: 831.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 272.57ms. Allocated memory is still 178.3MB. Free memory was 129.1MB in the beginning and 118.0MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1231.39ms. Allocated memory is still 178.3MB. Free memory was 117.4MB in the beginning and 118.7MB in the end (delta: -1.3MB). Peak memory consumption was 592.5kB. Max. memory is 16.1GB. * Witness Printer took 88.89ms. Allocated memory is still 178.3MB. Free memory was 118.7MB in the beginning and 114.5MB 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: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 739 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 486 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 154 IncrementalHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 253 mSDtfsCounter, 154 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, InterpolantAutomatonStates: 35, 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, 7 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 47 PreInvPairs, 51 NumberOfFragments, 39 HoareAnnotationTreeSize, 47 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 69 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 193 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 23/23 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! [2023-12-02 17:23:48,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d385926-3d9d-46dc-aa81-95bd4cfda654/bin/utaipan-verify-nQ1chXbOIh/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