./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire --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 ff7f98b41a2da3578e790df894a867e943a0857e97661a8032b524a76ca3b438 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:32:28,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:32:28,502 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 20:32:28,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:32:28,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:32:28,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:32:28,551 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:32:28,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:32:28,553 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:32:28,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:32:28,559 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:32:28,560 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:32:28,561 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:32:28,562 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:32:28,563 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:32:28,563 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:32:28,564 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:32:28,564 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:32:28,565 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:32:28,565 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:32:28,566 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:32:28,566 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:32:28,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:32:28,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:32:28,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:32:28,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:32:28,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:32:28,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:32:28,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:32:28,570 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:32:28,572 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:32:28,572 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:32:28,572 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:32:28,573 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:32:28,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:32:28,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:32:28,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:28,574 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:32:28,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:32:28,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:32:28,575 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:32:28,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:32:28,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:32:28,575 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:32:28,576 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:32:28,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:32:28,577 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_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff7f98b41a2da3578e790df894a867e943a0857e97661a8032b524a76ca3b438 [2023-11-23 20:32:28,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:32:28,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:32:28,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:32:28,946 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:32:28,948 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:32:28,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i [2023-11-23 20:32:32,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:32:32,283 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:32:32,284 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i [2023-11-23 20:32:32,290 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/data/3beca0c54/1acb2e480a2a47d2a7b219b818440932/FLAGb32e239f0 [2023-11-23 20:32:32,303 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/data/3beca0c54/1acb2e480a2a47d2a7b219b818440932 [2023-11-23 20:32:32,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:32:32,307 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:32:32,308 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:32,308 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:32:32,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:32:32,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798d667a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32, skipping insertion in model container [2023-11-23 20:32:32,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:32:32,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:32,502 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:32:32,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:32,536 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:32:32,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32 WrapperNode [2023-11-23 20:32:32,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:32,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:32,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:32:32,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:32:32,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,577 INFO L138 Inliner]: procedures = 11, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2023-11-23 20:32:32,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:32,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:32:32,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:32:32,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:32:32,587 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:32:32,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:32:32,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:32:32,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:32:32,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32" (1/1) ... [2023-11-23 20:32:32,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:32,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:32,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:32:32,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:32:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:32:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:32:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:32:32,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:32:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:32:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure selectionSort [2023-11-23 20:32:32,684 INFO L138 BoogieDeclarations]: Found implementation of procedure selectionSort [2023-11-23 20:32:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:32:32,749 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:32:32,750 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:32:32,947 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:32:32,997 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:32:32,997 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 20:32:32,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:32 BoogieIcfgContainer [2023-11-23 20:32:32,999 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:32:33,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:32:33,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:32:33,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:32:33,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:32:32" (1/3) ... [2023-11-23 20:32:33,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1713c02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:33, skipping insertion in model container [2023-11-23 20:32:33,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:32" (2/3) ... [2023-11-23 20:32:33,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1713c02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:33, skipping insertion in model container [2023-11-23 20:32:33,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:32" (3/3) ... [2023-11-23 20:32:33,028 INFO L112 eAbstractionObserver]: Analyzing ICFG selectionSort_recursive.i [2023-11-23 20:32:33,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:32:33,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-23 20:32:33,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:32:33,114 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;@7a44cdd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:32:33,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-23 20:32:33,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.736842105263158) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:32:33,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 20:32:33,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:33,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 20:32:33,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:33,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:33,130 INFO L85 PathProgramCache]: Analyzing trace with hash 3256351, now seen corresponding path program 1 times [2023-11-23 20:32:33,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:33,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967831370] [2023-11-23 20:32:33,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:33,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:33,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967831370] [2023-11-23 20:32:33,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967831370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:33,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:33,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:33,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526010895] [2023-11-23 20:32:33,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:33,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:33,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:33,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:33,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:33,544 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.736842105263158) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:33,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:33,615 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-11-23 20:32:33,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:32:33,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 20:32:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:33,625 INFO L225 Difference]: With dead ends: 38 [2023-11-23 20:32:33,625 INFO L226 Difference]: Without dead ends: 31 [2023-11-23 20:32:33,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:33,632 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:33,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 85 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:33,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-23 20:32:33,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-23 20:32:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 29 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-11-23 20:32:33,669 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 4 [2023-11-23 20:32:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:33,670 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-11-23 20:32:33,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-11-23 20:32:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:32:33,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:33,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 20:32:33,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:32:33,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:33,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:33,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1165381391, now seen corresponding path program 1 times [2023-11-23 20:32:33,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:33,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582579328] [2023-11-23 20:32:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:33,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:33,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:33,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582579328] [2023-11-23 20:32:33,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582579328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:33,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:33,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:33,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512552884] [2023-11-23 20:32:33,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:33,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:33,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:33,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:33,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:33,803 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 3 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) [2023-11-23 20:32:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:33,835 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2023-11-23 20:32:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:32:33,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2023-11-23 20:32:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:33,837 INFO L225 Difference]: With dead ends: 52 [2023-11-23 20:32:33,837 INFO L226 Difference]: Without dead ends: 31 [2023-11-23 20:32:33,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:33,840 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:33,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 48 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:33,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-23 20:32:33,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-23 20:32:33,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.631578947368421) internal successors, (31), 29 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2023-11-23 20:32:33,847 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 6 [2023-11-23 20:32:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:33,848 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-11-23 20:32:33,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-23 20:32:33,849 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2023-11-23 20:32:33,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:32:33,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:33,849 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-23 20:32:33,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:32:33,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:33,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:33,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1774242790, now seen corresponding path program 1 times [2023-11-23 20:32:33,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:33,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12280385] [2023-11-23 20:32:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:33,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:33,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:33,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12280385] [2023-11-23 20:32:33,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12280385] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:33,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390947262] [2023-11-23 20:32:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:33,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:33,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:33,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:33,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:32:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:34,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:32:34,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:34,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:34,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390947262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:34,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:32:34,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-23 20:32:34,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276954323] [2023-11-23 20:32:34,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:34,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:32:34,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:32:34,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:32:34,113 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-11-23 20:32:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:34,162 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2023-11-23 20:32:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:32:34,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 20:32:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:34,164 INFO L225 Difference]: With dead ends: 31 [2023-11-23 20:32:34,164 INFO L226 Difference]: Without dead ends: 30 [2023-11-23 20:32:34,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-23 20:32:34,166 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:34,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 82 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-23 20:32:34,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-23 20:32:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 28 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-11-23 20:32:34,173 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 7 [2023-11-23 20:32:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:34,174 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-11-23 20:32:34,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-11-23 20:32:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-11-23 20:32:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:32:34,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:34,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:34,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:34,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:34,387 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:34,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash 54927916, now seen corresponding path program 1 times [2023-11-23 20:32:34,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:34,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600358460] [2023-11-23 20:32:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:34,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 20:32:34,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:34,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600358460] [2023-11-23 20:32:34,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600358460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:34,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:34,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:32:34,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314859065] [2023-11-23 20:32:34,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:34,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:32:34,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:32:34,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:34,469 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-23 20:32:34,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:34,505 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2023-11-23 20:32:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:32:34,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2023-11-23 20:32:34,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:34,507 INFO L225 Difference]: With dead ends: 30 [2023-11-23 20:32:34,507 INFO L226 Difference]: Without dead ends: 29 [2023-11-23 20:32:34,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:32:34,509 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:34,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 40 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:34,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-23 20:32:34,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-23 20:32:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 27 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-11-23 20:32:34,516 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 9 [2023-11-23 20:32:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:34,516 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-11-23 20:32:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-23 20:32:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-11-23 20:32:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:32:34,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:34,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-23 20:32:34,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:32:34,518 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:34,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:34,519 INFO L85 PathProgramCache]: Analyzing trace with hash 833048409, now seen corresponding path program 1 times [2023-11-23 20:32:34,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:34,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445229186] [2023-11-23 20:32:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:34,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:34,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:34,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445229186] [2023-11-23 20:32:34,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445229186] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:34,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268324544] [2023-11-23 20:32:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:34,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:34,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:34,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:34,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:32:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:34,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:32:34,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:34,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:34,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268324544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:34,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1440225998] [2023-11-23 20:32:34,859 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-23 20:32:34,859 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:34,863 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:34,868 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:34,869 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:35,473 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:35,619 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '460#(and (<= 2147483647 |ULTIMATE.start_main_#t~post8#1|) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|))' at error location [2023-11-23 20:32:35,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:32:35,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:35,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-23 20:32:35,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507216354] [2023-11-23 20:32:35,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:35,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 20:32:35,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:35,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 20:32:35,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-23 20:32:35,625 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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) [2023-11-23 20:32:35,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:35,751 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2023-11-23 20:32:35,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 20:32:35,752 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 20:32:35,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:35,756 INFO L225 Difference]: With dead ends: 39 [2023-11-23 20:32:35,756 INFO L226 Difference]: Without dead ends: 38 [2023-11-23 20:32:35,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-11-23 20:32:35,760 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:35,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 162 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:35,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-23 20:32:35,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-23 20:32:35,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 36 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:35,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-11-23 20:32:35,781 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 8 [2023-11-23 20:32:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:35,781 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-11-23 20:32:35,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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) [2023-11-23 20:32:35,782 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-11-23 20:32:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 20:32:35,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:35,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:35,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:36,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:36,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting selectionSortErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:36,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:36,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1702765461, now seen corresponding path program 1 times [2023-11-23 20:32:36,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:36,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814099600] [2023-11-23 20:32:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:36,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:36,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814099600] [2023-11-23 20:32:36,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814099600] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:36,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750632471] [2023-11-23 20:32:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:36,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:36,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:36,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:36,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:32:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:36,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:32:36,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 20:32:36,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:36,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750632471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:36,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:32:36,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2023-11-23 20:32:36,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308792696] [2023-11-23 20:32:36,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:36,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:32:36,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:36,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:32:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 20:32:36,205 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-23 20:32:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:36,239 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-11-23 20:32:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:32:36,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2023-11-23 20:32:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:36,241 INFO L225 Difference]: With dead ends: 38 [2023-11-23 20:32:36,241 INFO L226 Difference]: Without dead ends: 37 [2023-11-23 20:32:36,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-23 20:32:36,243 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:36,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 37 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:36,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-23 20:32:36,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-23 20:32:36,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 35 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-11-23 20:32:36,249 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 10 [2023-11-23 20:32:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:36,250 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-11-23 20:32:36,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-23 20:32:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-11-23 20:32:36,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 20:32:36,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:36,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:36,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:36,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 20:32:36,471 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting selectionSortErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:36,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:36,472 INFO L85 PathProgramCache]: Analyzing trace with hash -24929545, now seen corresponding path program 1 times [2023-11-23 20:32:36,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:36,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525751832] [2023-11-23 20:32:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:36,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:36,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 20:32:36,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:36,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525751832] [2023-11-23 20:32:36,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525751832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:36,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:36,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:36,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316119603] [2023-11-23 20:32:36,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:36,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:36,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:36,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:36,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:36,552 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-23 20:32:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:36,603 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2023-11-23 20:32:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:32:36,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 12 [2023-11-23 20:32:36,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:36,606 INFO L225 Difference]: With dead ends: 55 [2023-11-23 20:32:36,607 INFO L226 Difference]: Without dead ends: 51 [2023-11-23 20:32:36,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:36,608 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:36,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 46 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-23 20:32:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2023-11-23 20:32:36,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 45 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:36,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2023-11-23 20:32:36,625 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 12 [2023-11-23 20:32:36,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:36,625 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2023-11-23 20:32:36,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-11-23 20:32:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2023-11-23 20:32:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 20:32:36,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:36,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:36,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 20:32:36,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting selectionSortErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:36,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:36,628 INFO L85 PathProgramCache]: Analyzing trace with hash 353340952, now seen corresponding path program 1 times [2023-11-23 20:32:36,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:36,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981296664] [2023-11-23 20:32:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:36,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:36,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:36,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:36,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981296664] [2023-11-23 20:32:36,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981296664] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:36,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38742450] [2023-11-23 20:32:36,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:36,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:36,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:36,780 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:36,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 20:32:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:36,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 20:32:36,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:36,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:36,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38742450] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:36,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [16622306] [2023-11-23 20:32:36,986 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-23 20:32:36,986 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:36,987 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:36,987 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:36,987 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:37,324 INFO L197 IcfgInterpreter]: Interpreting procedure selectionSort with input of size 16 for LOIs [2023-11-23 20:32:37,407 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:37,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [16622306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:37,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:37,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8, 8] total 23 [2023-11-23 20:32:37,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626676668] [2023-11-23 20:32:37,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:37,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 20:32:37,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:37,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 20:32:37,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-11-23 20:32:37,911 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2023-11-23 20:32:38,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:38,117 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2023-11-23 20:32:38,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 20:32:38,120 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 15 [2023-11-23 20:32:38,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:38,120 INFO L225 Difference]: With dead ends: 73 [2023-11-23 20:32:38,121 INFO L226 Difference]: Without dead ends: 53 [2023-11-23 20:32:38,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-11-23 20:32:38,123 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 23 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:38,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 63 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-23 20:32:38,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2023-11-23 20:32:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 48 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-11-23 20:32:38,134 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 15 [2023-11-23 20:32:38,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:38,135 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-11-23 20:32:38,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2023-11-23 20:32:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-11-23 20:32:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 20:32:38,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:38,137 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:38,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:38,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 20:32:38,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting selectionSortErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:38,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:38,351 INFO L85 PathProgramCache]: Analyzing trace with hash -584449366, now seen corresponding path program 1 times [2023-11-23 20:32:38,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:38,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472302779] [2023-11-23 20:32:38,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:38,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:32:38,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:38,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472302779] [2023-11-23 20:32:38,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472302779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:38,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78496097] [2023-11-23 20:32:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:38,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:38,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:38,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:38,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 20:32:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:38,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 20:32:38,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:32:38,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:32:38,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78496097] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:38,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [414234627] [2023-11-23 20:32:38,710 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-11-23 20:32:38,710 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:38,710 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:38,711 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:38,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:38,985 INFO L197 IcfgInterpreter]: Interpreting procedure selectionSort with input of size 16 for LOIs [2023-11-23 20:32:39,114 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:39,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [414234627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:39,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:39,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8, 8] total 23 [2023-11-23 20:32:39,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640019854] [2023-11-23 20:32:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:39,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 20:32:39,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:39,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 20:32:39,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-11-23 20:32:39,650 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2023-11-23 20:32:40,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:40,109 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2023-11-23 20:32:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 20:32:40,110 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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 18 [2023-11-23 20:32:40,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:40,110 INFO L225 Difference]: With dead ends: 53 [2023-11-23 20:32:40,110 INFO L226 Difference]: Without dead ends: 52 [2023-11-23 20:32:40,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2023-11-23 20:32:40,112 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:40,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 54 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:32:40,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-23 20:32:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2023-11-23 20:32:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 48 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2023-11-23 20:32:40,118 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 18 [2023-11-23 20:32:40,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:40,119 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2023-11-23 20:32:40,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2023-11-23 20:32:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2023-11-23 20:32:40,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 20:32:40,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:40,120 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1] [2023-11-23 20:32:40,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:40,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:40,320 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:40,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1872592820, now seen corresponding path program 2 times [2023-11-23 20:32:40,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:40,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256114853] [2023-11-23 20:32:40,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:40,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:40,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:40,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256114853] [2023-11-23 20:32:40,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256114853] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:40,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120608179] [2023-11-23 20:32:40,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:32:40,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:40,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:40,466 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:40,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 20:32:40,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 20:32:40,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:32:40,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:32:40,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 20:32:40,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:40,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 20:32:40,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120608179] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:40,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [44353201] [2023-11-23 20:32:40,604 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-23 20:32:40,604 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:40,604 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:40,604 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:40,604 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:40,821 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:41,032 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1471#(and (<= 2147483647 |ULTIMATE.start_main_#t~post8#1|) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|))' at error location [2023-11-23 20:32:41,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:32:41,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:41,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2023-11-23 20:32:41,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62096103] [2023-11-23 20:32:41,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:41,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 20:32:41,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:41,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 20:32:41,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-23 20:32:41,034 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 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) [2023-11-23 20:32:41,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:41,257 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2023-11-23 20:32:41,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 20:32:41,258 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-23 20:32:41,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:41,259 INFO L225 Difference]: With dead ends: 54 [2023-11-23 20:32:41,259 INFO L226 Difference]: Without dead ends: 53 [2023-11-23 20:32:41,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2023-11-23 20:32:41,260 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:41,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 126 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-23 20:32:41,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2023-11-23 20:32:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 36 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:41,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2023-11-23 20:32:41,266 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 17 [2023-11-23 20:32:41,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:41,267 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2023-11-23 20:32:41,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 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) [2023-11-23 20:32:41,267 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2023-11-23 20:32:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 20:32:41,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:41,268 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:41,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:41,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:41,469 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting selectionSortErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:41,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:41,469 INFO L85 PathProgramCache]: Analyzing trace with hash -938061070, now seen corresponding path program 1 times [2023-11-23 20:32:41,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:41,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453262865] [2023-11-23 20:32:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 20:32:41,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:41,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453262865] [2023-11-23 20:32:41,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453262865] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:41,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169336571] [2023-11-23 20:32:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:41,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:41,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:41,578 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:41,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 20:32:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:41,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 20:32:41,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 20:32:41,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 20:32:41,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169336571] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:41,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1186435248] [2023-11-23 20:32:41,779 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-11-23 20:32:41,779 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:41,779 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:41,779 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:41,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:42,019 INFO L197 IcfgInterpreter]: Interpreting procedure selectionSort with input of size 16 for LOIs [2023-11-23 20:32:42,180 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:42,730 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1734#(and (<= 1 selectionSort_~index~0) (<= |selectionSort_#in~size| 2147483647) (<= 1 |#StackHeapBarrier|) (<= selectionSort_~size 2147483647) (= selectionSort_~array.offset 0) (<= 2147483647 |selectionSort_#t~post1|) (<= 2 |selectionSort_#in~size|) (= |selectionSort_#in~startIndex| 0) (= |selectionSort_#in~array.offset| 0) (<= 2 selectionSort_~size) (= selectionSort_~startIndex 0))' at error location [2023-11-23 20:32:42,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:32:42,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:42,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-11-23 20:32:42,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850350671] [2023-11-23 20:32:42,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:42,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 20:32:42,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:42,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 20:32:42,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2023-11-23 20:32:42,733 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 1 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) [2023-11-23 20:32:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:42,848 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2023-11-23 20:32:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:32:42,848 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 1 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 19 [2023-11-23 20:32:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:42,849 INFO L225 Difference]: With dead ends: 77 [2023-11-23 20:32:42,849 INFO L226 Difference]: Without dead ends: 44 [2023-11-23 20:32:42,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2023-11-23 20:32:42,851 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:42,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 141 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:42,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-23 20:32:42,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2023-11-23 20:32:42,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 39 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-11-23 20:32:42,856 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 19 [2023-11-23 20:32:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:42,857 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-11-23 20:32:42,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 1 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) [2023-11-23 20:32:42,857 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-11-23 20:32:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 20:32:42,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:42,859 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:42,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:43,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:43,070 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting selectionSortErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:43,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:43,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2064189033, now seen corresponding path program 2 times [2023-11-23 20:32:43,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:43,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647477706] [2023-11-23 20:32:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:43,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:32:43,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:43,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647477706] [2023-11-23 20:32:43,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647477706] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:43,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413531258] [2023-11-23 20:32:43,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:32:43,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:43,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:43,273 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:43,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 20:32:43,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 20:32:43,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 20:32:43,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 20:32:43,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 20:32:43,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 20:32:43,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413531258] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:43,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [495738064] [2023-11-23 20:32:43,508 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-11-23 20:32:43,508 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:43,508 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:32:43,508 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:32:43,509 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:32:43,774 INFO L197 IcfgInterpreter]: Interpreting procedure selectionSort with input of size 16 for LOIs [2023-11-23 20:32:43,889 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:32:44,484 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2037#(and (<= 1 selectionSort_~index~0) (<= |selectionSort_#in~size| 2147483647) (<= 1 |#StackHeapBarrier|) (<= selectionSort_~size 2147483647) (= selectionSort_~array.offset 0) (<= 2147483647 |selectionSort_#t~post1|) (<= 2 |selectionSort_#in~size|) (= |selectionSort_#in~startIndex| 0) (= |selectionSort_#in~array.offset| 0) (<= 2 selectionSort_~size) (= selectionSort_~startIndex 0))' at error location [2023-11-23 20:32:44,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:32:44,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:44,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 16 [2023-11-23 20:32:44,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018479145] [2023-11-23 20:32:44,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:44,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 20:32:44,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:44,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 20:32:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2023-11-23 20:32:44,489 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 17 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:44,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:44,809 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2023-11-23 20:32:44,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 20:32:44,809 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-23 20:32:44,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:44,812 INFO L225 Difference]: With dead ends: 80 [2023-11-23 20:32:44,812 INFO L226 Difference]: Without dead ends: 79 [2023-11-23 20:32:44,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 20:32:44,814 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 84 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:44,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 101 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:32:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-23 20:32:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 39. [2023-11-23 20:32:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.25) internal successors, (40), 36 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2023-11-23 20:32:44,831 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 22 [2023-11-23 20:32:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:44,831 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2023-11-23 20:32:44,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2023-11-23 20:32:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 20:32:44,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:44,835 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:44,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:45,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:45,036 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting selectionSortErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:45,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:45,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1332761930, now seen corresponding path program 1 times [2023-11-23 20:32:45,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:45,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081837583] [2023-11-23 20:32:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:45,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 20:32:45,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:45,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081837583] [2023-11-23 20:32:45,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081837583] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:45,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345373942] [2023-11-23 20:32:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:45,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:45,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:45,158 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:45,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 20:32:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:45,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:32:45,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 20:32:45,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:45,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345373942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:45,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 20:32:45,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-23 20:32:45,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237529726] [2023-11-23 20:32:45,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:45,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:32:45,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:32:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:32:45,276 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:45,317 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2023-11-23 20:32:45,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:32:45,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-23 20:32:45,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:45,318 INFO L225 Difference]: With dead ends: 39 [2023-11-23 20:32:45,318 INFO L226 Difference]: Without dead ends: 37 [2023-11-23 20:32:45,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-23 20:32:45,319 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:45,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 17 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:45,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-23 20:32:45,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-23 20:32:45,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.1875) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-11-23 20:32:45,326 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 28 [2023-11-23 20:32:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:45,326 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-11-23 20:32:45,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-11-23 20:32:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 20:32:45,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:45,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:45,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:45,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 20:32:45,542 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting selectionSortErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:45,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:45,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1634053057, now seen corresponding path program 1 times [2023-11-23 20:32:45,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:45,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104406112] [2023-11-23 20:32:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:45,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 20:32:45,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:45,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104406112] [2023-11-23 20:32:45,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104406112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:45,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:45,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:45,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541654483] [2023-11-23 20:32:45,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:45,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:32:45,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:45,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:32:45,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:32:45,587 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:45,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:45,611 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2023-11-23 20:32:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:32:45,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-23 20:32:45,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:45,612 INFO L225 Difference]: With dead ends: 37 [2023-11-23 20:32:45,612 INFO L226 Difference]: Without dead ends: 35 [2023-11-23 20:32:45,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:32:45,614 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:45,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:32:45,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-23 20:32:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-11-23 20:32:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-11-23 20:32:45,630 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2023-11-23 20:32:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:45,632 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-11-23 20:32:45,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:45,632 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-11-23 20:32:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 20:32:45,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:45,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:45,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 20:32:45,636 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting selectionSortErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-23 20:32:45,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1633046245, now seen corresponding path program 1 times [2023-11-23 20:32:45,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:45,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164058942] [2023-11-23 20:32:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:45,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 20:32:45,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:32:45,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164058942] [2023-11-23 20:32:45,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164058942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:32:45,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597892320] [2023-11-23 20:32:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:45,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:45,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:45,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:45,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 20:32:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:45,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 20:32:45,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 20:32:46,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 20:32:46,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597892320] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:46,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1266960092] [2023-11-23 20:32:46,267 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-11-23 20:32:46,267 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:32:46,268 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) [2023-11-23 20:32:46,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:32:46,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 22 [2023-11-23 20:32:46,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992824657] [2023-11-23 20:32:46,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:46,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 20:32:46,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:32:46,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 20:32:46,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-11-23 20:32:46,271 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 16 states have internal predecessors, (70), 5 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:46,661 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2023-11-23 20:32:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 20:32:46,661 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 16 states have internal predecessors, (70), 5 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-23 20:32:46,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:46,662 INFO L225 Difference]: With dead ends: 71 [2023-11-23 20:32:46,662 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 20:32:46,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2023-11-23 20:32:46,664 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 75 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:46,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 65 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 20:32:46,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 20:32:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 20:32:46,665 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) [2023-11-23 20:32:46,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 20:32:46,665 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2023-11-23 20:32:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:46,665 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 20:32:46,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 16 states have internal predecessors, (70), 5 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:32:46,665 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 20:32:46,665 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 20:32:46,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-11-23 20:32:46,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-11-23 20:32:46,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-23 20:32:46,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-23 20:32:46,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-23 20:32:46,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-23 20:32:46,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-23 20:32:46,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-23 20:32:46,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-23 20:32:46,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-11-23 20:32:46,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:46,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 20:32:46,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 20:32:47,586 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2023-11-23 20:32:47,586 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 20:32:47,586 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2023-11-23 20:32:47,586 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 20:32:47,586 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 26 45) no Hoare annotation was computed. [2023-11-23 20:32:47,587 INFO L895 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= (select |#valid| 0) 0)) [2023-11-23 20:32:47,587 INFO L899 garLoopResultBuilder]: For program point L40-1(line 40) no Hoare annotation was computed. [2023-11-23 20:32:47,587 INFO L899 garLoopResultBuilder]: For program point L36-3(line 36) no Hoare annotation was computed. [2023-11-23 20:32:47,587 INFO L899 garLoopResultBuilder]: For program point L36-4(line 36) no Hoare annotation was computed. [2023-11-23 20:32:47,587 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed. [2023-11-23 20:32:47,587 INFO L895 garLoopResultBuilder]: At program point L36-5(lines 36 38) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~n~0#1| 2147483647)) (.cse1 (<= 1 |#StackHeapBarrier|)) (.cse2 (= |ULTIMATE.start_main_~a~0#1.offset| 0)) (.cse3 (<= 1 |ULTIMATE.start_main_~n~0#1|)) (.cse4 (= (select |#valid| 0) 0))) (or (and .cse0 .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) .cse3 .cse4) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~i~0#1| 0) .cse3 .cse4))) [2023-11-23 20:32:47,587 INFO L899 garLoopResultBuilder]: For program point selectionSortFINAL(lines 9 23) no Hoare annotation was computed. [2023-11-23 20:32:47,587 INFO L899 garLoopResultBuilder]: For program point selectionSortErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2023-11-23 20:32:47,587 INFO L899 garLoopResultBuilder]: For program point selectionSortErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2023-11-23 20:32:47,588 INFO L899 garLoopResultBuilder]: For program point selectionSortErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-11-23 20:32:47,588 INFO L899 garLoopResultBuilder]: For program point selectionSortErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-11-23 20:32:47,588 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2023-11-23 20:32:47,588 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2023-11-23 20:32:47,588 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 23) the Hoare annotation is: (or (< |selectionSort_#in~size| 1) (not (= |selectionSort_#in~array.offset| 0)) (= |#memory_int| |old(#memory_int)|) (< 2147483647 |selectionSort_#in~size|) (not (= |selectionSort_#in~startIndex| 0)) (< |#StackHeapBarrier| 1)) [2023-11-23 20:32:47,588 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2023-11-23 20:32:47,588 INFO L899 garLoopResultBuilder]: For program point selectionSortErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-11-23 20:32:47,588 INFO L899 garLoopResultBuilder]: For program point selectionSortEXIT(lines 9 23) no Hoare annotation was computed. [2023-11-23 20:32:47,588 INFO L899 garLoopResultBuilder]: For program point selectionSortErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2023-11-23 20:32:47,588 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-11-23 20:32:47,589 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-11-23 20:32:47,589 INFO L899 garLoopResultBuilder]: For program point selectionSortErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-11-23 20:32:47,589 INFO L895 garLoopResultBuilder]: At program point L22-2(line 22) the Hoare annotation is: (let ((.cse2 (< |selectionSort_#in~startIndex| 1)) (.cse7 (< 2 |selectionSort_#in~size|)) (.cse1 (< 2147483647 |selectionSort_#in~size|)) (.cse3 (<= |selectionSort_#in~size| 2147483647)) (.cse4 (<= selectionSort_~size 2147483647)) (.cse5 (<= 1 |selectionSort_#in~size|)) (.cse6 (<= 1 selectionSort_~size)) (.cse0 (< |selectionSort_#in~size| 1)) (.cse8 (not (= |selectionSort_#in~array.offset| 0))) (.cse9 (not (= |selectionSort_#in~startIndex| 0))) (.cse10 (< |#StackHeapBarrier| 1))) (and (or .cse0 .cse1 .cse2 (and .cse3 .cse4 .cse5 (<= 1 selectionSort_~startIndex) (<= selectionSort_~startIndex 2147483646) .cse6)) (or .cse0 .cse1 .cse7 .cse2) (or .cse0 (<= selectionSort_~size 2) .cse8 .cse1 .cse7 .cse9 .cse10) (or .cse0 .cse8 .cse1 .cse9 (and .cse3 .cse4 .cse5 .cse6 (= selectionSort_~startIndex 0)) .cse10) (or .cse0 .cse8 .cse9 (< 1 |selectionSort_#in~size|) .cse10))) [2023-11-23 20:32:47,589 INFO L899 garLoopResultBuilder]: For program point selectionSortErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 11) no Hoare annotation was computed. [2023-11-23 20:32:47,589 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2023-11-23 20:32:47,589 INFO L899 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2023-11-23 20:32:47,589 INFO L899 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2023-11-23 20:32:47,589 INFO L899 garLoopResultBuilder]: For program point L14-6(line 14) no Hoare annotation was computed. [2023-11-23 20:32:47,590 INFO L895 garLoopResultBuilder]: At program point L14-7(lines 14 18) the Hoare annotation is: (let ((.cse2 (< |selectionSort_#in~startIndex| 1)) (.cse0 (< |selectionSort_#in~size| 1)) (.cse1 (< 2147483647 |selectionSort_#in~size|)) (.cse3 (<= 2 selectionSort_~index~0))) (and (or .cse0 .cse1 (< 2 |selectionSort_#in~size|) .cse2) (or .cse0 .cse1 (and (<= selectionSort_~size 2147483647) .cse3 (<= 1 selectionSort_~startIndex) (<= selectionSort_~startIndex 2147483646) (<= 1 selectionSort_~size)) .cse2) (or .cse0 (not (= |selectionSort_#in~array.offset| 0)) .cse1 (not (= |selectionSort_#in~startIndex| 0)) (< |#StackHeapBarrier| 1) (and (= selectionSort_~size |selectionSort_#in~size|) (= selectionSort_~array.offset 0) (let ((.cse4 (<= 2 selectionSort_~size))) (or (and .cse3 (<= selectionSort_~index~0 2147483647) .cse4) (and (= 0 selectionSort_~minIndex~0) .cse4 (= selectionSort_~index~0 1)))) (= |#memory_int| |old(#memory_int)|) (= selectionSort_~array.base |selectionSort_#in~array.base|) (= selectionSort_~startIndex 0))))) [2023-11-23 20:32:47,593 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:47,595 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:32:47,610 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~array!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-23 20:32:47,610 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~array!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-23 20:32:47,611 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~array!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-23 20:32:47,611 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression #in~array!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-23 20:32:47,612 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-23 20:32:47,612 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-23 20:32:47,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:32:47 BoogieIcfgContainer [2023-11-23 20:32:47,613 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:32:47,613 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:32:47,613 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:32:47,613 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:32:47,614 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:32" (3/4) ... [2023-11-23 20:32:47,616 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 20:32:47,619 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure selectionSort [2023-11-23 20:32:47,623 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-23 20:32:47,624 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-23 20:32:47,624 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 20:32:47,624 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:32:47,652 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\old(size) < 1) || (2147483647 < \old(size))) || (2 < \old(size))) || (\old(startIndex) < 1)) && ((((\old(size) < 1) || (2147483647 < \old(size))) || (((((size <= 2147483647) && (2 <= index)) && (1 <= startIndex)) && (startIndex <= 2147483646)) && (1 <= size))) || (\old(startIndex) < 1))) [2023-11-23 20:32:47,672 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\old(size) < 1) || (2147483647 < \old(size))) || (2 < \old(size))) || (\old(startIndex) < 1)) && ((((\old(size) < 1) || (2147483647 < \old(size))) || (((((size <= 2147483647) && (2 <= index)) && (1 <= startIndex)) && (startIndex <= 2147483646)) && (1 <= size))) || (\old(startIndex) < 1))) [2023-11-23 20:32:47,728 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 20:32:47,729 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 20:32:47,729 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:32:47,730 INFO L158 Benchmark]: Toolchain (without parser) took 15422.87ms. Allocated memory was 125.8MB in the beginning and 186.6MB in the end (delta: 60.8MB). Free memory was 79.5MB in the beginning and 58.6MB in the end (delta: 20.9MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. [2023-11-23 20:32:47,731 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:32:47,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.35ms. Allocated memory is still 125.8MB. Free memory was 79.1MB in the beginning and 69.4MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 20:32:47,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.98ms. Allocated memory is still 125.8MB. Free memory was 69.0MB in the beginning and 67.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:32:47,732 INFO L158 Benchmark]: Boogie Preprocessor took 25.37ms. Allocated memory is still 125.8MB. Free memory was 67.6MB in the beginning and 66.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:32:47,732 INFO L158 Benchmark]: RCFGBuilder took 394.79ms. Allocated memory is still 125.8MB. Free memory was 66.1MB in the beginning and 52.8MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 20:32:47,733 INFO L158 Benchmark]: TraceAbstraction took 14593.23ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 125.0MB in the beginning and 62.8MB in the end (delta: 62.2MB). Peak memory consumption was 92.1MB. Max. memory is 16.1GB. [2023-11-23 20:32:47,733 INFO L158 Benchmark]: Witness Printer took 115.96ms. Allocated memory is still 186.6MB. Free memory was 62.8MB in the beginning and 58.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:32:47,744 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.35ms. Allocated memory is still 125.8MB. Free memory was 79.1MB in the beginning and 69.4MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.98ms. Allocated memory is still 125.8MB. Free memory was 69.0MB in the beginning and 67.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.37ms. Allocated memory is still 125.8MB. Free memory was 67.6MB in the beginning and 66.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 394.79ms. Allocated memory is still 125.8MB. Free memory was 66.1MB in the beginning and 52.8MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 14593.23ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 125.0MB in the beginning and 62.8MB in the end (delta: 62.2MB). Peak memory consumption was 92.1MB. Max. memory is 16.1GB. * Witness Printer took 115.96ms. Allocated memory is still 186.6MB. Free memory was 62.8MB in the beginning and 58.6MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~array!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~array!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~array!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #in~array!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 36]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 11]: 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: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 14.5s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 398 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398 mSDsluCounter, 1090 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 853 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1310 IncrementalHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 237 mSDtfsCounter, 1310 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 538 GetRequests, 271 SyntacticMatches, 42 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1266 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=8, InterpolantAutomatonStates: 125, 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, 15 MinimizatonAttempts, 64 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 35 PreInvPairs, 45 NumberOfFragments, 299 HoareAnnotationTreeSize, 35 FomulaSimplifications, 1376 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1086 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 410 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 1470 SizeOfPredicates, 40 NumberOfNonLiveVariables, 703 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 32 InterpolantComputations, 8 PerfectInterpolantSequences, 131/234 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 31, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 54, TOOLS_POST_TIME: 0.5s, TOOLS_POST_CALL_APPLICATIONS: 2, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 56, TOOLS_QUANTIFIERELIM_TIME: 0.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 110, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 8, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 31, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME: 0.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 8, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 245, DAG_COMPRESSION_RETAINED_NODES: 96, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((\old(size) < 1) || (2147483647 < \old(size))) || (2 < \old(size))) || (\old(startIndex) < 1)) && ((((\old(size) < 1) || (2147483647 < \old(size))) || (((((size <= 2147483647) && (2 <= index)) && (1 <= startIndex)) && (startIndex <= 2147483646)) && (1 <= size))) || (\old(startIndex) < 1))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((n <= 2147483647) && (1 <= i)) && (i <= 2147483647)) && (1 <= n)) || (((n <= 2147483647) && (i == 0)) && (1 <= n))) RESULT: Ultimate proved your program to be correct! [2023-11-23 20:32:47,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5a799-81e1-4b1b-982d-d793a5f4a090/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE