./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1be5a7d97aa41e02c549ddce0b54861696e25bfa9b91d41dbf151eb81f7686c7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:39:34,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:39:34,275 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 20:39:34,279 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:39:34,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:39:34,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:39:34,303 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:39:34,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:39:34,304 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:39:34,305 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:39:34,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:39:34,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:39:34,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:39:34,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:39:34,308 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:39:34,308 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:39:34,309 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:39:34,309 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:39:34,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:39:34,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:39:34,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:39:34,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:39:34,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:39:34,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:39:34,314 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 20:39:34,315 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:39:34,315 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:39:34,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:39:34,316 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:39:34,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:39:34,317 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:39:34,317 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:39:34,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:39:34,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:39:34,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:39:34,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:39:34,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:39:34,319 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:39:34,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:39:34,319 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:39:34,319 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:39:34,320 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:39:34,320 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:39:34,320 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:39:34,321 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1be5a7d97aa41e02c549ddce0b54861696e25bfa9b91d41dbf151eb81f7686c7 [2023-11-28 20:39:34,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:39:34,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:39:34,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:39:34,568 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:39:34,568 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:39:34,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c [2023-11-28 20:39:37,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:39:37,408 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:39:37,409 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c [2023-11-28 20:39:37,414 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/data/aa8855ecb/bd9854d7509b4b548a82d1bc679f5d9b/FLAG4d97bd549 [2023-11-28 20:39:37,427 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/data/aa8855ecb/bd9854d7509b4b548a82d1bc679f5d9b [2023-11-28 20:39:37,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:39:37,431 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:39:37,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:39:37,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:39:37,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:39:37,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702ab065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37, skipping insertion in model container [2023-11-28 20:39:37,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,453 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:39:37,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:39:37,582 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:39:37,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:39:37,604 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:39:37,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37 WrapperNode [2023-11-28 20:39:37,604 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:39:37,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:39:37,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:39:37,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:39:37,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,628 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 19 [2023-11-28 20:39:37,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:39:37,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:39:37,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:39:37,630 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:39:37,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,639 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,648 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-28 20:39:37,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,652 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,654 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,655 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:39:37,656 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:39:37,656 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:39:37,657 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:39:37,657 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (1/1) ... [2023-11-28 20:39:37,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:39:37,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:37,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:39:37,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:39:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:39:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:39:37,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:39:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:39:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-11-28 20:39:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-11-28 20:39:37,788 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:39:37,791 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:39:37,887 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:39:37,908 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:39:37,908 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-28 20:39:37,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:39:37 BoogieIcfgContainer [2023-11-28 20:39:37,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:39:37,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:39:37,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:39:37,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:39:37,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:39:37" (1/3) ... [2023-11-28 20:39:37,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8956c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:39:37, skipping insertion in model container [2023-11-28 20:39:37,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:39:37" (2/3) ... [2023-11-28 20:39:37,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8956c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:39:37, skipping insertion in model container [2023-11-28 20:39:37,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:39:37" (3/3) ... [2023-11-28 20:39:37,917 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2023-11-28 20:39:37,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:39:37,933 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-28 20:39:37,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:39:37,981 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=PETRI_NET, 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;@3230602c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:39:37,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-28 20:39:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 16 states have internal predecessors, (18), 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) [2023-11-28 20:39:37,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-28 20:39:37,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:37,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 20:39:37,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-28 20:39:37,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:37,998 INFO L85 PathProgramCache]: Analyzing trace with hash 63799541, now seen corresponding path program 1 times [2023-11-28 20:39:38,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:38,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270059583] [2023-11-28 20:39:38,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:38,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:39:38,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:38,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270059583] [2023-11-28 20:39:38,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270059583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:38,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:39:38,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:39:38,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619773494] [2023-11-28 20:39:38,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:38,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:39:38,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:38,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:39:38,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:39:38,215 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 16 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:39:38,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:38,300 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2023-11-28 20:39:38,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:39:38,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-28 20:39:38,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:38,310 INFO L225 Difference]: With dead ends: 40 [2023-11-28 20:39:38,310 INFO L226 Difference]: Without dead ends: 27 [2023-11-28 20:39:38,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:39:38,317 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 22 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:38,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 50 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:39:38,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-28 20:39:38,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2023-11-28 20:39:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 20:39:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-11-28 20:39:38,346 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 5 [2023-11-28 20:39:38,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:38,346 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-11-28 20:39:38,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:39:38,347 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-28 20:39:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-28 20:39:38,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:38,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 20:39:38,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:39:38,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-28 20:39:38,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:38,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1977785826, now seen corresponding path program 1 times [2023-11-28 20:39:38,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:38,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278166289] [2023-11-28 20:39:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:38,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:39:38,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:38,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278166289] [2023-11-28 20:39:38,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278166289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:38,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:39:38,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:39:38,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507802420] [2023-11-28 20:39:38,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:38,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:39:38,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:38,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:39:38,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:39:38,425 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:39:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:38,460 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2023-11-28 20:39:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:39:38,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-28 20:39:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:38,462 INFO L225 Difference]: With dead ends: 24 [2023-11-28 20:39:38,462 INFO L226 Difference]: Without dead ends: 23 [2023-11-28 20:39:38,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:39:38,464 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:38,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 16 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:39:38,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-28 20:39:38,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-28 20:39:38,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 20:39:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-11-28 20:39:38,475 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2023-11-28 20:39:38,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:38,475 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-11-28 20:39:38,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:39:38,476 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-11-28 20:39:38,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-28 20:39:38,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:38,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:38,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 20:39:38,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-28 20:39:38,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:38,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1708859346, now seen corresponding path program 1 times [2023-11-28 20:39:38,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:38,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228671679] [2023-11-28 20:39:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:38,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:39:38,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:38,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228671679] [2023-11-28 20:39:38,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228671679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:38,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400240355] [2023-11-28 20:39:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:38,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:38,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:38,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:38,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:39:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:38,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:39:38,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:39:38,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:39:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:39:38,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400240355] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:39:38,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:39:38,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-28 20:39:38,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628670645] [2023-11-28 20:39:38,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:39:38,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:39:38,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:38,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:39:38,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:39:38,768 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:39:38,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:38,921 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2023-11-28 20:39:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:39:38,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-28 20:39:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:38,924 INFO L225 Difference]: With dead ends: 73 [2023-11-28 20:39:38,925 INFO L226 Difference]: Without dead ends: 65 [2023-11-28 20:39:38,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:39:38,927 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 101 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:38,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 92 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:39:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-28 20:39:38,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2023-11-28 20:39:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.325) internal successors, (53), 42 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-28 20:39:38,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2023-11-28 20:39:38,943 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 10 [2023-11-28 20:39:38,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:38,943 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2023-11-28 20:39:38,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:39:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2023-11-28 20:39:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-28 20:39:38,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:38,944 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:38,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:39:39,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:39,145 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-28 20:39:39,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:39,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1465280389, now seen corresponding path program 1 times [2023-11-28 20:39:39,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:39,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562608639] [2023-11-28 20:39:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:39,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:39,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 20:39:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-28 20:39:39,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:39,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562608639] [2023-11-28 20:39:39,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562608639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:39,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:39:39,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:39:39,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232102255] [2023-11-28 20:39:39,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:39,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:39:39,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:39,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:39:39,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:39:39,230 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:39:39,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:39,249 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2023-11-28 20:39:39,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:39:39,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-28 20:39:39,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:39,251 INFO L225 Difference]: With dead ends: 73 [2023-11-28 20:39:39,251 INFO L226 Difference]: Without dead ends: 71 [2023-11-28 20:39:39,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:39:39,253 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:39,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:39:39,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-28 20:39:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-11-28 20:39:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 56 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-28 20:39:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2023-11-28 20:39:39,265 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2023-11-28 20:39:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:39,266 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2023-11-28 20:39:39,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:39:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2023-11-28 20:39:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-28 20:39:39,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:39,267 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:39,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 20:39:39,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-28 20:39:39,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2013219646, now seen corresponding path program 1 times [2023-11-28 20:39:39,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:39,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761960378] [2023-11-28 20:39:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:39,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:39,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:39,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 20:39:39,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:39,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761960378] [2023-11-28 20:39:39,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761960378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:39,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:39:39,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:39:39,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241955659] [2023-11-28 20:39:39,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:39,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:39:39,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:39,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:39:39,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:39:39,317 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:39:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:39,329 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2023-11-28 20:39:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:39:39,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-28 20:39:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:39,331 INFO L225 Difference]: With dead ends: 71 [2023-11-28 20:39:39,331 INFO L226 Difference]: Without dead ends: 70 [2023-11-28 20:39:39,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:39:39,333 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:39,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:39:39,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-28 20:39:39,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-28 20:39:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-28 20:39:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2023-11-28 20:39:39,350 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2023-11-28 20:39:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:39,351 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2023-11-28 20:39:39,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:39:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2023-11-28 20:39:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-28 20:39:39,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:39,352 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2023-11-28 20:39:39,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 20:39:39,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-28 20:39:39,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1685904693, now seen corresponding path program 2 times [2023-11-28 20:39:39,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:39,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218054643] [2023-11-28 20:39:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:39,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:39:39,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:39,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218054643] [2023-11-28 20:39:39,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218054643] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:39,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493509249] [2023-11-28 20:39:39,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:39:39,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:39,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:39,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:39,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:39:39,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:39:39,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:39:39,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 20:39:39,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:39:39,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:39:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:39:39,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493509249] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:39:39,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:39:39,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-28 20:39:39,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619265615] [2023-11-28 20:39:39,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:39:39,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:39:39,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:39,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:39:39,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:39:39,840 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 24 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:39:40,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:40,235 INFO L93 Difference]: Finished difference Result 187 states and 203 transitions. [2023-11-28 20:39:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-28 20:39:40,236 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-28 20:39:40,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:40,238 INFO L225 Difference]: With dead ends: 187 [2023-11-28 20:39:40,238 INFO L226 Difference]: Without dead ends: 155 [2023-11-28 20:39:40,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=389, Invalid=1017, Unknown=0, NotChecked=0, Total=1406 [2023-11-28 20:39:40,240 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 255 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:40,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 182 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:39:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-28 20:39:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 145. [2023-11-28 20:39:40,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 115 states have internal predecessors, (132), 12 states have call successors, (12), 11 states have call predecessors, (12), 16 states have return successors, (18), 18 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-28 20:39:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2023-11-28 20:39:40,259 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 25 [2023-11-28 20:39:40,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:40,259 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2023-11-28 20:39:40,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:39:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2023-11-28 20:39:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-28 20:39:40,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:40,261 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-28 20:39:40,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 20:39:40,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-28 20:39:40,467 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-28 20:39:40,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:40,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1776865054, now seen corresponding path program 1 times [2023-11-28 20:39:40,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:40,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37860831] [2023-11-28 20:39:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:40,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 20:39:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-28 20:39:40,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:40,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37860831] [2023-11-28 20:39:40,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37860831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:40,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438184275] [2023-11-28 20:39:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:40,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:40,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:40,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:40,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:39:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:40,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:39:40,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-28 20:39:40,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:39:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-28 20:39:40,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438184275] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:39:40,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:39:40,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-11-28 20:39:40,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944042812] [2023-11-28 20:39:40,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:39:40,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 20:39:40,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:40,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 20:39:40,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-28 20:39:40,780 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:39:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:40,895 INFO L93 Difference]: Finished difference Result 275 states and 321 transitions. [2023-11-28 20:39:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 20:39:40,897 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2023-11-28 20:39:40,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:40,900 INFO L225 Difference]: With dead ends: 275 [2023-11-28 20:39:40,900 INFO L226 Difference]: Without dead ends: 274 [2023-11-28 20:39:40,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-11-28 20:39:40,902 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 26 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:40,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 24 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:39:40,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-28 20:39:40,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2023-11-28 20:39:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 220 states have (on average 1.0772727272727274) internal successors, (237), 217 states have internal predecessors, (237), 12 states have call successors, (12), 11 states have call predecessors, (12), 40 states have return successors, (45), 45 states have call predecessors, (45), 11 states have call successors, (45) [2023-11-28 20:39:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 294 transitions. [2023-11-28 20:39:40,927 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 294 transitions. Word has length 39 [2023-11-28 20:39:40,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:40,927 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 294 transitions. [2023-11-28 20:39:40,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:39:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 294 transitions. [2023-11-28 20:39:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-28 20:39:40,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:40,930 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1] [2023-11-28 20:39:40,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:39:41,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-28 20:39:41,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-28 20:39:41,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:41,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2091957141, now seen corresponding path program 3 times [2023-11-28 20:39:41,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:41,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024364656] [2023-11-28 20:39:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:41,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:39:41,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:41,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024364656] [2023-11-28 20:39:41,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024364656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:41,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664601499] [2023-11-28 20:39:41,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:39:41,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:41,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:41,548 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:41,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 20:39:41,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-28 20:39:41,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:39:41,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 20:39:41,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:39:41,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:39:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:39:42,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664601499] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:39:42,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:39:42,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2023-11-28 20:39:42,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269992788] [2023-11-28 20:39:42,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:39:42,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-28 20:39:42,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:42,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-28 20:39:42,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2023-11-28 20:39:42,309 INFO L87 Difference]: Start difference. First operand 274 states and 294 transitions. Second operand has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 25 states have internal predecessors, (88), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:39:42,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:42,476 INFO L93 Difference]: Finished difference Result 279 states and 294 transitions. [2023-11-28 20:39:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 20:39:42,477 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 25 states have internal predecessors, (88), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-28 20:39:42,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:42,479 INFO L225 Difference]: With dead ends: 279 [2023-11-28 20:39:42,479 INFO L226 Difference]: Without dead ends: 278 [2023-11-28 20:39:42,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=860, Invalid=2110, Unknown=0, NotChecked=0, Total=2970 [2023-11-28 20:39:42,482 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 215 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:42,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 141 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:39:42,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-28 20:39:42,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 273. [2023-11-28 20:39:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 220 states have (on average 1.0727272727272728) internal successors, (236), 216 states have internal predecessors, (236), 12 states have call successors, (12), 11 states have call predecessors, (12), 40 states have return successors, (45), 45 states have call predecessors, (45), 11 states have call successors, (45) [2023-11-28 20:39:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 293 transitions. [2023-11-28 20:39:42,501 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 293 transitions. Word has length 55 [2023-11-28 20:39:42,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:42,502 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 293 transitions. [2023-11-28 20:39:42,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 25 states have internal predecessors, (88), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:39:42,502 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 293 transitions. [2023-11-28 20:39:42,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-28 20:39:42,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:42,505 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2023-11-28 20:39:42,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 20:39:42,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:42,709 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-28 20:39:42,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1869126763, now seen corresponding path program 2 times [2023-11-28 20:39:42,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:42,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28753628] [2023-11-28 20:39:42,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:42,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:42,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:42,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:42,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:42,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:42,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-28 20:39:43,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:43,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28753628] [2023-11-28 20:39:43,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28753628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:43,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203497870] [2023-11-28 20:39:43,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:39:43,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:43,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:43,001 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:43,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 20:39:43,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:39:43,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:39:43,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 20:39:43,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-28 20:39:43,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:39:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-28 20:39:43,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203497870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:39:43,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:39:43,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2023-11-28 20:39:43,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189000841] [2023-11-28 20:39:43,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:39:43,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-28 20:39:43,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:43,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-28 20:39:43,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2023-11-28 20:39:43,719 INFO L87 Difference]: Start difference. First operand 273 states and 293 transitions. Second operand has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 25 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-28 20:39:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:43,970 INFO L93 Difference]: Finished difference Result 592 states and 677 transitions. [2023-11-28 20:39:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-28 20:39:43,971 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 25 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 54 [2023-11-28 20:39:43,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:43,974 INFO L225 Difference]: With dead ends: 592 [2023-11-28 20:39:43,974 INFO L226 Difference]: Without dead ends: 368 [2023-11-28 20:39:43,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=419, Invalid=1561, Unknown=0, NotChecked=0, Total=1980 [2023-11-28 20:39:43,977 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 49 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:43,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 30 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:39:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-11-28 20:39:43,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2023-11-28 20:39:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 299 states have (on average 1.0367892976588629) internal successors, (310), 290 states have internal predecessors, (310), 12 states have call successors, (12), 11 states have call predecessors, (12), 56 states have return successors, (66), 66 states have call predecessors, (66), 11 states have call successors, (66) [2023-11-28 20:39:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 388 transitions. [2023-11-28 20:39:43,996 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 388 transitions. Word has length 54 [2023-11-28 20:39:43,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:43,997 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 388 transitions. [2023-11-28 20:39:43,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 25 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-28 20:39:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 388 transitions. [2023-11-28 20:39:44,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-28 20:39:44,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:44,003 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1] [2023-11-28 20:39:44,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 20:39:44,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:44,205 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-28 20:39:44,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:44,205 INFO L85 PathProgramCache]: Analyzing trace with hash 612462997, now seen corresponding path program 3 times [2023-11-28 20:39:44,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:44,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391765962] [2023-11-28 20:39:44,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:44,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:44,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:44,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:44,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:45,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:45,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:45,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:45,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:45,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:45,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 11 proven. 275 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-28 20:39:45,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:45,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391765962] [2023-11-28 20:39:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391765962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:45,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585340932] [2023-11-28 20:39:45,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:39:45,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:45,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:45,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:45,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 20:39:45,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-28 20:39:45,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:39:45,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-28 20:39:45,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-28 20:39:45,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:39:50,359 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-28 20:39:50,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585340932] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:39:50,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:39:50,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 48 [2023-11-28 20:39:50,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13338382] [2023-11-28 20:39:50,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:39:50,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-28 20:39:50,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:50,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-28 20:39:50,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2023-11-28 20:39:50,363 INFO L87 Difference]: Start difference. First operand 368 states and 388 transitions. Second operand has 49 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 49 states have internal predecessors, (101), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:39:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:50,889 INFO L93 Difference]: Finished difference Result 1005 states and 1156 transitions. [2023-11-28 20:39:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-28 20:39:50,890 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 49 states have internal predecessors, (101), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) Word has length 114 [2023-11-28 20:39:50,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:50,893 INFO L225 Difference]: With dead ends: 1005 [2023-11-28 20:39:50,893 INFO L226 Difference]: Without dead ends: 428 [2023-11-28 20:39:50,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1703, Invalid=6853, Unknown=0, NotChecked=0, Total=8556 [2023-11-28 20:39:50,900 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 97 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:50,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 48 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:39:50,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-11-28 20:39:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2023-11-28 20:39:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 347 states have (on average 1.031700288184438) internal successors, (358), 338 states have internal predecessors, (358), 12 states have call successors, (12), 11 states have call predecessors, (12), 68 states have return successors, (78), 78 states have call predecessors, (78), 11 states have call successors, (78) [2023-11-28 20:39:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 448 transitions. [2023-11-28 20:39:50,920 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 448 transitions. Word has length 114 [2023-11-28 20:39:50,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:50,920 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 448 transitions. [2023-11-28 20:39:50,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 49 states have internal predecessors, (101), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:39:50,920 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 448 transitions. [2023-11-28 20:39:50,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-11-28 20:39:50,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:50,925 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 23, 23, 23, 23, 22, 1, 1, 1, 1] [2023-11-28 20:39:50,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 20:39:51,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 20:39:51,127 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-28 20:39:51,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:51,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1291648888, now seen corresponding path program 4 times [2023-11-28 20:39:51,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:51,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134108191] [2023-11-28 20:39:51,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:51,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:52,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-28 20:39:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:52,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:52,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:53,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:54,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:54,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:55,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:55,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:55,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:55,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:56,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:56,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:56,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:56,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:56,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:56,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4138 backedges. 34 proven. 1265 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2023-11-28 20:39:56,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:56,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134108191] [2023-11-28 20:39:56,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134108191] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:56,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145800250] [2023-11-28 20:39:56,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 20:39:56,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:56,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:56,743 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:56,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 20:39:56,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 20:39:56,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:39:56,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-28 20:39:56,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4138 backedges. 1595 proven. 1344 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2023-11-28 20:39:58,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:40:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4138 backedges. 1595 proven. 2290 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-28 20:40:57,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145800250] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:40:57,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:40:57,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 51, 73] total 146 [2023-11-28 20:40:57,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604728742] [2023-11-28 20:40:57,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:40:57,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2023-11-28 20:40:57,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:40:57,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2023-11-28 20:40:57,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2199, Invalid=18971, Unknown=0, NotChecked=0, Total=21170 [2023-11-28 20:40:57,815 INFO L87 Difference]: Start difference. First operand 428 states and 448 transitions. Second operand has 146 states, 144 states have (on average 2.6666666666666665) internal successors, (384), 122 states have internal predecessors, (384), 50 states have call successors, (51), 25 states have call predecessors, (51), 46 states have return successors, (69), 46 states have call predecessors, (69), 26 states have call successors, (69) [2023-11-28 20:40:58,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:40:58,301 INFO L93 Difference]: Finished difference Result 428 states and 448 transitions. [2023-11-28 20:40:58,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-28 20:40:58,302 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 144 states have (on average 2.6666666666666665) internal successors, (384), 122 states have internal predecessors, (384), 50 states have call successors, (51), 25 states have call predecessors, (51), 46 states have return successors, (69), 46 states have call predecessors, (69), 26 states have call successors, (69) Word has length 289 [2023-11-28 20:40:58,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:40:58,303 INFO L225 Difference]: With dead ends: 428 [2023-11-28 20:40:58,303 INFO L226 Difference]: Without dead ends: 0 [2023-11-28 20:40:58,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 502 SyntacticMatches, 23 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12821 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3033, Invalid=21773, Unknown=0, NotChecked=0, Total=24806 [2023-11-28 20:40:58,312 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 53 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:40:58,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 20 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:40:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-28 20:40:58,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-28 20:40:58,313 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) [2023-11-28 20:40:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-28 20:40:58,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 289 [2023-11-28 20:40:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:40:58,314 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-28 20:40:58,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 144 states have (on average 2.6666666666666665) internal successors, (384), 122 states have internal predecessors, (384), 50 states have call successors, (51), 25 states have call predecessors, (51), 46 states have return successors, (69), 46 states have call predecessors, (69), 26 states have call successors, (69) [2023-11-28 20:40:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-28 20:40:58,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-28 20:40:58,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-28 20:40:58,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-28 20:40:58,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-28 20:40:58,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-28 20:40:58,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 20:40:58,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-28 20:40:58,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-28 20:40:58,606 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-28 20:40:58,606 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2023-11-28 20:40:58,606 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (= 5 |ULTIMATE.start_main_~input~0#1|) [2023-11-28 20:40:58,606 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-11-28 20:40:58,607 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 17) no Hoare annotation was computed. [2023-11-28 20:40:58,607 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-28 20:40:58,607 INFO L899 garLoopResultBuilder]: For program point idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2023-11-28 20:40:58,607 INFO L899 garLoopResultBuilder]: For program point idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2023-11-28 20:40:58,607 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2023-11-28 20:40:58,607 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2023-11-28 20:40:58,607 INFO L899 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2023-11-28 20:40:58,607 INFO L899 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2023-11-28 20:40:58,607 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 9) the Hoare annotation is: true [2023-11-28 20:40:58,608 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-11-28 20:40:58,608 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-11-28 20:40:58,608 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2023-11-28 20:40:58,608 INFO L895 garLoopResultBuilder]: At program point L8-2(line 8) the Hoare annotation is: (and (or (< 1 |id_#in~x|) (< |id_#in~x| 1) (= id_~x 1)) (or (< 0 |id_#in~x|) (< |id_#in~x| 0)) (or (= |id_#in~x| id_~x) (< |id_#in~x| 2) (< 5 |id_#in~x|))) [2023-11-28 20:40:58,608 INFO L899 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2023-11-28 20:40:58,608 INFO L899 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2023-11-28 20:40:58,608 INFO L899 garLoopResultBuilder]: For program point L8-5(line 8) no Hoare annotation was computed. [2023-11-28 20:40:58,611 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1] [2023-11-28 20:40:58,614 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 20:40:58,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:40:58 BoogieIcfgContainer [2023-11-28 20:40:58,618 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 20:40:58,618 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 20:40:58,618 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 20:40:58,618 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 20:40:58,619 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:39:37" (3/4) ... [2023-11-28 20:40:58,621 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 20:40:58,624 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2023-11-28 20:40:58,628 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-28 20:40:58,628 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-28 20:40:58,628 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-28 20:40:58,629 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-28 20:40:58,706 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 20:40:58,706 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 20:40:58,706 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 20:40:58,707 INFO L158 Benchmark]: Toolchain (without parser) took 81275.61ms. Allocated memory was 127.9MB in the beginning and 358.6MB in the end (delta: 230.7MB). Free memory was 84.9MB in the beginning and 263.2MB in the end (delta: -178.3MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. [2023-11-28 20:40:58,707 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 127.9MB. Free memory was 68.9MB in the beginning and 68.8MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:40:58,707 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.50ms. Allocated memory is still 127.9MB. Free memory was 84.9MB in the beginning and 75.0MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-28 20:40:58,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.66ms. Allocated memory is still 127.9MB. Free memory was 75.0MB in the beginning and 73.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:40:58,708 INFO L158 Benchmark]: Boogie Preprocessor took 26.13ms. Allocated memory is still 127.9MB. Free memory was 73.8MB in the beginning and 72.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:40:58,708 INFO L158 Benchmark]: RCFGBuilder took 252.67ms. Allocated memory was 127.9MB in the beginning and 169.9MB in the end (delta: 41.9MB). Free memory was 71.9MB in the beginning and 139.3MB in the end (delta: -67.4MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2023-11-28 20:40:58,709 INFO L158 Benchmark]: TraceAbstraction took 80706.19ms. Allocated memory was 169.9MB in the beginning and 358.6MB in the end (delta: 188.7MB). Free memory was 138.3MB in the beginning and 268.4MB in the end (delta: -130.1MB). Peak memory consumption was 60.7MB. Max. memory is 16.1GB. [2023-11-28 20:40:58,709 INFO L158 Benchmark]: Witness Printer took 87.84ms. Allocated memory is still 358.6MB. Free memory was 267.4MB in the beginning and 263.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 20:40:58,711 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 127.9MB. Free memory was 68.9MB in the beginning and 68.8MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.50ms. Allocated memory is still 127.9MB. Free memory was 84.9MB in the beginning and 75.0MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.66ms. Allocated memory is still 127.9MB. Free memory was 75.0MB in the beginning and 73.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.13ms. Allocated memory is still 127.9MB. Free memory was 73.8MB in the beginning and 72.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 252.67ms. Allocated memory was 127.9MB in the beginning and 169.9MB in the end (delta: 41.9MB). Free memory was 71.9MB in the beginning and 139.3MB in the end (delta: -67.4MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * TraceAbstraction took 80706.19ms. Allocated memory was 169.9MB in the beginning and 358.6MB in the end (delta: 188.7MB). Free memory was 138.3MB in the beginning and 268.4MB in the end (delta: -130.1MB). Peak memory consumption was 60.7MB. Max. memory is 16.1GB. * Witness Printer took 87.84ms. Allocated memory is still 358.6MB. Free memory was 267.4MB in the beginning and 263.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 80.7s, OverallIterations: 11, TraceHistogramMax: 35, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 886 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 842 mSDsluCounter, 657 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 523 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1754 IncrementalHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 134 mSDtfsCounter, 1754 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1494 GetRequests, 1047 SyntacticMatches, 23 SemanticMatches, 424 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17911 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred in iteration=10, InterpolantAutomatonStates: 184, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 30 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 25 PreInvPairs, 25 NumberOfFragments, 32 HoareAnnotationTreeSize, 25 FomulaSimplifications, 419 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 357 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 75.6s InterpolantComputationTime, 1224 NumberOfCodeBlocks, 1219 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1785 ConstructedInterpolants, 0 QuantifiedInterpolants, 4879 SizeOfPredicates, 53 NumberOfNonLiveVariables, 1207 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 8788/15577 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-28 20:40:58,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e164de00-cd17-46dc-ab2b-0891532049da/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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