./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/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_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/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 64bit --witnessprinter.graph.data.programhash c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:37:49,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:37:50,015 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-29 03:37:50,020 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:37:50,021 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:37:50,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:37:50,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:37:50,051 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:37:50,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:37:50,052 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:37:50,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:37:50,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:37:50,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:37:50,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:37:50,055 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:37:50,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:37:50,057 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:37:50,057 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:37:50,058 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:37:50,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:37:50,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:37:50,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:37:50,060 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:37:50,060 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:37:50,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:37:50,061 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:37:50,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:37:50,062 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:37:50,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:37:50,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:37:50,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:37:50,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:37:50,064 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:37:50,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:37:50,065 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:37:50,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:37:50,065 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:37:50,065 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:37:50,066 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:37:50,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:37:50,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:37:50,066 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_f2e8394c-d19b-4657-88bc-5fe104c11fed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2023-11-29 03:37:50,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:37:50,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:37:50,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:37:50,323 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:37:50,323 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:37:50,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-numeric/Binomial.c [2023-11-29 03:37:53,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:37:53,279 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:37:53,279 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/sv-benchmarks/c/termination-numeric/Binomial.c [2023-11-29 03:37:53,285 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/data/310d668a1/5149156142d9415997b863bd887a7616/FLAGa388e062c [2023-11-29 03:37:53,296 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/data/310d668a1/5149156142d9415997b863bd887a7616 [2023-11-29 03:37:53,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:37:53,299 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:37:53,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:37:53,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:37:53,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:37:53,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556f84da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53, skipping insertion in model container [2023-11-29 03:37:53,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,322 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:37:53,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:37:53,446 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:37:53,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:37:53,475 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:37:53,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53 WrapperNode [2023-11-29 03:37:53,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:37:53,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:37:53,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:37:53,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:37:53,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,506 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-11-29 03:37:53,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:37:53,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:37:53,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:37:53,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:37:53,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,519 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,526 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 03:37:53,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:37:53,539 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:37:53,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:37:53,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:37:53,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (1/1) ... [2023-11-29 03:37:53,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:37:53,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:53,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:37:53,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:37:53,602 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2023-11-29 03:37:53,602 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2023-11-29 03:37:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2023-11-29 03:37:53,603 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2023-11-29 03:37:53,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:37:53,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:37:53,657 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:37:53,658 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:37:53,833 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:37:53,852 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:37:53,852 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 03:37:53,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:37:53 BoogieIcfgContainer [2023-11-29 03:37:53,853 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:37:53,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:37:53,856 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:37:53,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:37:53,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:37:53" (1/3) ... [2023-11-29 03:37:53,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e18352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:37:53, skipping insertion in model container [2023-11-29 03:37:53,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:37:53" (2/3) ... [2023-11-29 03:37:53,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e18352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:37:53, skipping insertion in model container [2023-11-29 03:37:53,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:37:53" (3/3) ... [2023-11-29 03:37:53,863 INFO L112 eAbstractionObserver]: Analyzing ICFG Binomial.c [2023-11-29 03:37:53,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:37:53,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 03:37:53,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:37:53,954 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;@66618638, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:37:53,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-29 03:37:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 48 states have internal predecessors, (56), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:37:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 03:37:53,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:53,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:53,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:53,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:53,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1861099633, now seen corresponding path program 1 times [2023-11-29 03:37:53,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:53,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039616061] [2023-11-29 03:37:53,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:53,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:54,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:54,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039616061] [2023-11-29 03:37:54,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039616061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:54,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:54,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:37:54,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074649257] [2023-11-29 03:37:54,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:54,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:37:54,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:54,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:37:54,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:37:54,140 INFO L87 Difference]: Start difference. First operand has 57 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 48 states have internal predecessors, (56), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:54,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:54,178 INFO L93 Difference]: Finished difference Result 111 states and 131 transitions. [2023-11-29 03:37:54,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:37:54,181 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 03:37:54,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:54,190 INFO L225 Difference]: With dead ends: 111 [2023-11-29 03:37:54,190 INFO L226 Difference]: Without dead ends: 54 [2023-11-29 03:37:54,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:37:54,198 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:54,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:54,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-29 03:37:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-29 03:37:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.53125) internal successors, (49), 45 states have internal predecessors, (49), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:37:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2023-11-29 03:37:54,232 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 7 [2023-11-29 03:37:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:54,233 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2023-11-29 03:37:54,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:54,233 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2023-11-29 03:37:54,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 03:37:54,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:54,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:54,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:37:54,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:54,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:54,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1861081374, now seen corresponding path program 1 times [2023-11-29 03:37:54,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:54,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820147854] [2023-11-29 03:37:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:54,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:54,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:54,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820147854] [2023-11-29 03:37:54,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820147854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:54,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:54,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:54,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930206844] [2023-11-29 03:37:54,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:54,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:54,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:54,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:54,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:54,304 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:54,373 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2023-11-29 03:37:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:37:54,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 03:37:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:54,375 INFO L225 Difference]: With dead ends: 106 [2023-11-29 03:37:54,375 INFO L226 Difference]: Without dead ends: 55 [2023-11-29 03:37:54,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:54,378 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 27 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:54,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 133 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:54,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-29 03:37:54,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-11-29 03:37:54,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 46 states have internal predecessors, (50), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:37:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2023-11-29 03:37:54,391 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 7 [2023-11-29 03:37:54,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:54,391 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2023-11-29 03:37:54,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:54,392 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2023-11-29 03:37:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 03:37:54,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:54,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:54,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:37:54,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:54,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:54,394 INFO L85 PathProgramCache]: Analyzing trace with hash 13084174, now seen corresponding path program 1 times [2023-11-29 03:37:54,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:54,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650925093] [2023-11-29 03:37:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:54,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:54,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:54,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650925093] [2023-11-29 03:37:54,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650925093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:54,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:54,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:37:54,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331673586] [2023-11-29 03:37:54,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:54,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:37:54,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:54,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:37:54,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:37:54,457 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:54,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:54,487 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2023-11-29 03:37:54,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:37:54,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-29 03:37:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:54,490 INFO L225 Difference]: With dead ends: 57 [2023-11-29 03:37:54,491 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 03:37:54,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:37:54,493 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 9 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:54,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 103 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:54,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 03:37:54,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2023-11-29 03:37:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 45 states have internal predecessors, (49), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 03:37:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2023-11-29 03:37:54,505 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 12 [2023-11-29 03:37:54,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:54,506 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2023-11-29 03:37:54,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:54,506 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2023-11-29 03:37:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 03:37:54,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:54,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:54,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:37:54,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:54,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:54,508 INFO L85 PathProgramCache]: Analyzing trace with hash 405609432, now seen corresponding path program 1 times [2023-11-29 03:37:54,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:54,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941175259] [2023-11-29 03:37:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:54,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:54,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:54,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941175259] [2023-11-29 03:37:54,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941175259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:54,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:54,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:37:54,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381583288] [2023-11-29 03:37:54,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:54,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:37:54,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:54,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:37:54,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:37:54,610 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:54,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:54,747 INFO L93 Difference]: Finished difference Result 149 states and 176 transitions. [2023-11-29 03:37:54,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:37:54,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-29 03:37:54,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:54,750 INFO L225 Difference]: With dead ends: 149 [2023-11-29 03:37:54,750 INFO L226 Difference]: Without dead ends: 98 [2023-11-29 03:37:54,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:37:54,752 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 50 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:54,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 291 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:37:54,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-29 03:37:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2023-11-29 03:37:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 67 states have internal predecessors, (81), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 03:37:54,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2023-11-29 03:37:54,769 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 13 [2023-11-29 03:37:54,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:54,769 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2023-11-29 03:37:54,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2023-11-29 03:37:54,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 03:37:54,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:54,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:54,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:37:54,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:54,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:54,772 INFO L85 PathProgramCache]: Analyzing trace with hash 561923542, now seen corresponding path program 1 times [2023-11-29 03:37:54,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:54,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369810902] [2023-11-29 03:37:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:54,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:54,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:54,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369810902] [2023-11-29 03:37:54,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369810902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:54,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:54,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:54,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934922220] [2023-11-29 03:37:54,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:54,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:54,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:54,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:54,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:54,812 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:54,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:54,868 INFO L93 Difference]: Finished difference Result 179 states and 218 transitions. [2023-11-29 03:37:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:54,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-29 03:37:54,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:54,870 INFO L225 Difference]: With dead ends: 179 [2023-11-29 03:37:54,870 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 03:37:54,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:54,873 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 34 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 159 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 [2023-11-29 03:37:54,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 159 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:54,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 03:37:54,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 84. [2023-11-29 03:37:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.4642857142857142) internal successors, (82), 68 states have internal predecessors, (82), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 03:37:54,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 104 transitions. [2023-11-29 03:37:54,886 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 104 transitions. Word has length 13 [2023-11-29 03:37:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:54,887 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 104 transitions. [2023-11-29 03:37:54,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:37:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 104 transitions. [2023-11-29 03:37:54,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 03:37:54,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:54,888 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:54,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:37:54,889 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:54,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:54,889 INFO L85 PathProgramCache]: Analyzing trace with hash -612428253, now seen corresponding path program 1 times [2023-11-29 03:37:54,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:54,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972666994] [2023-11-29 03:37:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:54,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:54,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 03:37:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:37:54,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:54,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972666994] [2023-11-29 03:37:54,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972666994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:54,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:54,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:37:54,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527407892] [2023-11-29 03:37:54,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:54,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:37:54,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:54,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:37:54,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:37:54,980 INFO L87 Difference]: Start difference. First operand 84 states and 104 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:37:55,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:55,113 INFO L93 Difference]: Finished difference Result 217 states and 285 transitions. [2023-11-29 03:37:55,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:37:55,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-29 03:37:55,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:55,115 INFO L225 Difference]: With dead ends: 217 [2023-11-29 03:37:55,115 INFO L226 Difference]: Without dead ends: 139 [2023-11-29 03:37:55,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:37:55,118 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 41 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:55,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 277 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:37:55,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-29 03:37:55,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2023-11-29 03:37:55,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 80 states have (on average 1.4875) internal successors, (119), 94 states have internal predecessors, (119), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-29 03:37:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2023-11-29 03:37:55,141 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 19 [2023-11-29 03:37:55,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:55,141 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2023-11-29 03:37:55,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:37:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2023-11-29 03:37:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 03:37:55,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:55,143 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:55,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:37:55,143 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:55,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:55,144 INFO L85 PathProgramCache]: Analyzing trace with hash -133595047, now seen corresponding path program 1 times [2023-11-29 03:37:55,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:55,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272339554] [2023-11-29 03:37:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:55,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:55,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 03:37:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:37:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:37:55,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:55,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272339554] [2023-11-29 03:37:55,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272339554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:55,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:55,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:37:55,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445272323] [2023-11-29 03:37:55,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:55,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:37:55,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:55,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:37:55,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:37:55,236 INFO L87 Difference]: Start difference. First operand 119 states and 157 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:37:55,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:55,331 INFO L93 Difference]: Finished difference Result 156 states and 194 transitions. [2023-11-29 03:37:55,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:37:55,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-11-29 03:37:55,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:55,334 INFO L225 Difference]: With dead ends: 156 [2023-11-29 03:37:55,335 INFO L226 Difference]: Without dead ends: 155 [2023-11-29 03:37:55,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:37:55,336 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 60 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:55,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 233 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:37:55,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-29 03:37:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 133. [2023-11-29 03:37:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 90 states have (on average 1.4555555555555555) internal successors, (131), 104 states have internal predecessors, (131), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 03:37:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 175 transitions. [2023-11-29 03:37:55,356 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 175 transitions. Word has length 21 [2023-11-29 03:37:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:55,357 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 175 transitions. [2023-11-29 03:37:55,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:37:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 175 transitions. [2023-11-29 03:37:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 03:37:55,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:55,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:55,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:37:55,358 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:55,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:55,359 INFO L85 PathProgramCache]: Analyzing trace with hash 153520893, now seen corresponding path program 1 times [2023-11-29 03:37:55,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:55,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405832437] [2023-11-29 03:37:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:55,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:55,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 03:37:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:37:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:37:55,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:55,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405832437] [2023-11-29 03:37:55,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405832437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:55,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:55,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:37:55,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675292663] [2023-11-29 03:37:55,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:55,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:37:55,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:55,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:37:55,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:37:55,437 INFO L87 Difference]: Start difference. First operand 133 states and 175 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:37:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:55,534 INFO L93 Difference]: Finished difference Result 156 states and 191 transitions. [2023-11-29 03:37:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:37:55,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-11-29 03:37:55,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:55,536 INFO L225 Difference]: With dead ends: 156 [2023-11-29 03:37:55,536 INFO L226 Difference]: Without dead ends: 155 [2023-11-29 03:37:55,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:37:55,538 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 58 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:55,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 237 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:37:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-29 03:37:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 133. [2023-11-29 03:37:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 104 states have internal predecessors, (130), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 03:37:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2023-11-29 03:37:55,554 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 22 [2023-11-29 03:37:55,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:55,555 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2023-11-29 03:37:55,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:37:55,555 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2023-11-29 03:37:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 03:37:55,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:55,556 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:55,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:37:55,557 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:55,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash -226875282, now seen corresponding path program 1 times [2023-11-29 03:37:55,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:55,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25954949] [2023-11-29 03:37:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:55,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:55,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 03:37:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:37:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:37:55,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:55,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25954949] [2023-11-29 03:37:55,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25954949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:55,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:55,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:37:55,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212888732] [2023-11-29 03:37:55,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:55,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:37:55,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:55,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:37:55,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:37:55,659 INFO L87 Difference]: Start difference. First operand 133 states and 174 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:37:55,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:55,818 INFO L93 Difference]: Finished difference Result 279 states and 363 transitions. [2023-11-29 03:37:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:37:55,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-11-29 03:37:55,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:55,821 INFO L225 Difference]: With dead ends: 279 [2023-11-29 03:37:55,821 INFO L226 Difference]: Without dead ends: 161 [2023-11-29 03:37:55,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:37:55,823 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:55,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 312 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:37:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-29 03:37:55,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 137. [2023-11-29 03:37:55,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 107 states have internal predecessors, (133), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 03:37:55,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 177 transitions. [2023-11-29 03:37:55,840 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 177 transitions. Word has length 27 [2023-11-29 03:37:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:55,840 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 177 transitions. [2023-11-29 03:37:55,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:37:55,840 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 177 transitions. [2023-11-29 03:37:55,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 03:37:55,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:55,841 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:55,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:37:55,842 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:55,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:55,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1015624742, now seen corresponding path program 1 times [2023-11-29 03:37:55,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:55,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197155236] [2023-11-29 03:37:55,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:55,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:55,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:37:55,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319485608] [2023-11-29 03:37:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:55,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:55,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:55,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:55,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:37:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:55,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:37:55,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:37:55,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:37:55,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:55,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197155236] [2023-11-29 03:37:55,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:37:55,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319485608] [2023-11-29 03:37:55,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319485608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:55,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:55,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:55,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182399123] [2023-11-29 03:37:55,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:55,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:37:55,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:55,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:37:55,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:56,000 INFO L87 Difference]: Start difference. First operand 137 states and 177 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:37:56,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:56,427 INFO L93 Difference]: Finished difference Result 195 states and 274 transitions. [2023-11-29 03:37:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:56,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-11-29 03:37:56,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:56,431 INFO L225 Difference]: With dead ends: 195 [2023-11-29 03:37:56,431 INFO L226 Difference]: Without dead ends: 194 [2023-11-29 03:37:56,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:56,432 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 22 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:56,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 147 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:37:56,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-29 03:37:56,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 159. [2023-11-29 03:37:56,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 111 states have (on average 1.3873873873873874) internal successors, (154), 122 states have internal predecessors, (154), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (39), 27 states have call predecessors, (39), 25 states have call successors, (39) [2023-11-29 03:37:56,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 218 transitions. [2023-11-29 03:37:56,454 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 218 transitions. Word has length 29 [2023-11-29 03:37:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:56,454 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 218 transitions. [2023-11-29 03:37:56,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:37:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 218 transitions. [2023-11-29 03:37:56,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 03:37:56,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:56,456 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:56,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:37:56,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:56,662 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:56,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:56,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1419595990, now seen corresponding path program 1 times [2023-11-29 03:37:56,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:56,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804294895] [2023-11-29 03:37:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:56,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:56,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:37:56,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690235911] [2023-11-29 03:37:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:56,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:56,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:56,678 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:56,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:37:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:56,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:37:56,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:37:56,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:37:56,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:56,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804294895] [2023-11-29 03:37:56,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:37:56,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690235911] [2023-11-29 03:37:56,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690235911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:56,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:56,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:37:56,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530346954] [2023-11-29 03:37:56,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:56,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:37:56,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:56,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:37:56,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:56,775 INFO L87 Difference]: Start difference. First operand 159 states and 218 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:37:56,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:56,837 INFO L93 Difference]: Finished difference Result 195 states and 269 transitions. [2023-11-29 03:37:56,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:37:56,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-11-29 03:37:56,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:56,840 INFO L225 Difference]: With dead ends: 195 [2023-11-29 03:37:56,840 INFO L226 Difference]: Without dead ends: 194 [2023-11-29 03:37:56,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:56,841 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 18 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:56,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 147 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:56,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-29 03:37:56,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 163. [2023-11-29 03:37:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 115 states have (on average 1.3652173913043477) internal successors, (157), 126 states have internal predecessors, (157), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (39), 27 states have call predecessors, (39), 25 states have call successors, (39) [2023-11-29 03:37:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 221 transitions. [2023-11-29 03:37:56,859 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 221 transitions. Word has length 30 [2023-11-29 03:37:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:56,859 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 221 transitions. [2023-11-29 03:37:56,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:37:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 221 transitions. [2023-11-29 03:37:56,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 03:37:56,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:56,860 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:56,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:37:57,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:57,066 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:57,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:57,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1057802792, now seen corresponding path program 1 times [2023-11-29 03:37:57,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:57,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059670627] [2023-11-29 03:37:57,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:57,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:57,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:37:57,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198039132] [2023-11-29 03:37:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:57,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:57,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:57,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:57,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:37:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:57,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:37:57,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:37:57,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:37:57,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:57,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059670627] [2023-11-29 03:37:57,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:37:57,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198039132] [2023-11-29 03:37:57,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198039132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:57,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:57,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:37:57,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920813111] [2023-11-29 03:37:57,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:57,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:37:57,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:57,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:37:57,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:37:57,231 INFO L87 Difference]: Start difference. First operand 163 states and 221 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:37:57,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:57,319 INFO L93 Difference]: Finished difference Result 250 states and 348 transitions. [2023-11-29 03:37:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:37:57,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2023-11-29 03:37:57,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:57,322 INFO L225 Difference]: With dead ends: 250 [2023-11-29 03:37:57,322 INFO L226 Difference]: Without dead ends: 249 [2023-11-29 03:37:57,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:37:57,323 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 37 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:57,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 160 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:37:57,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-29 03:37:57,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 194. [2023-11-29 03:37:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 140 states have (on average 1.3214285714285714) internal successors, (185), 148 states have internal predecessors, (185), 31 states have call successors, (31), 9 states have call predecessors, (31), 10 states have return successors, (50), 36 states have call predecessors, (50), 31 states have call successors, (50) [2023-11-29 03:37:57,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 266 transitions. [2023-11-29 03:37:57,343 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 266 transitions. Word has length 31 [2023-11-29 03:37:57,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:57,343 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 266 transitions. [2023-11-29 03:37:57,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:37:57,344 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 266 transitions. [2023-11-29 03:37:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 03:37:57,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:57,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:57,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:37:57,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:57,548 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:57,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:57,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1567851752, now seen corresponding path program 1 times [2023-11-29 03:37:57,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:57,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108898214] [2023-11-29 03:37:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:57,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:57,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:37:57,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085053526] [2023-11-29 03:37:57,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:57,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:57,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:57,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:57,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:37:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:57,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:37:57,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:37:57,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:37:59,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:59,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108898214] [2023-11-29 03:37:59,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:37:59,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085053526] [2023-11-29 03:37:59,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085053526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:37:59,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:37:59,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 03:37:59,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705121840] [2023-11-29 03:37:59,044 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:37:59,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:37:59,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:59,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:37:59,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:37:59,045 INFO L87 Difference]: Start difference. First operand 194 states and 266 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:37:59,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:59,147 INFO L93 Difference]: Finished difference Result 249 states and 343 transitions. [2023-11-29 03:37:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:37:59,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-11-29 03:37:59,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:59,152 INFO L225 Difference]: With dead ends: 249 [2023-11-29 03:37:59,152 INFO L226 Difference]: Without dead ends: 248 [2023-11-29 03:37:59,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:37:59,153 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 23 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:59,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 251 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:37:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-11-29 03:37:59,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 198. [2023-11-29 03:37:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 144 states have (on average 1.3055555555555556) internal successors, (188), 152 states have internal predecessors, (188), 31 states have call successors, (31), 9 states have call predecessors, (31), 10 states have return successors, (50), 36 states have call predecessors, (50), 31 states have call successors, (50) [2023-11-29 03:37:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 269 transitions. [2023-11-29 03:37:59,175 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 269 transitions. Word has length 32 [2023-11-29 03:37:59,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:59,175 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 269 transitions. [2023-11-29 03:37:59,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:37:59,176 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 269 transitions. [2023-11-29 03:37:59,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 03:37:59,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:59,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:59,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:37:59,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:59,382 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:59,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:59,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1200186656, now seen corresponding path program 1 times [2023-11-29 03:37:59,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:59,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259797702] [2023-11-29 03:37:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:59,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:59,391 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:37:59,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987696804] [2023-11-29 03:37:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:59,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:59,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:59,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:59,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:37:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:59,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:37:59,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:37:59,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:37:59,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:59,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259797702] [2023-11-29 03:37:59,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:37:59,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987696804] [2023-11-29 03:37:59,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987696804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:59,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:59,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:37:59,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988042049] [2023-11-29 03:37:59,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:59,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:59,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:59,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:59,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:59,466 INFO L87 Difference]: Start difference. First operand 198 states and 269 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:37:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:59,499 INFO L93 Difference]: Finished difference Result 198 states and 269 transitions. [2023-11-29 03:37:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:37:59,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2023-11-29 03:37:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:59,502 INFO L225 Difference]: With dead ends: 198 [2023-11-29 03:37:59,502 INFO L226 Difference]: Without dead ends: 197 [2023-11-29 03:37:59,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:59,503 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 8 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:59,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 139 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:59,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-29 03:37:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2023-11-29 03:37:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 144 states have (on average 1.2916666666666667) internal successors, (186), 151 states have internal predecessors, (186), 31 states have call successors, (31), 9 states have call predecessors, (31), 10 states have return successors, (50), 36 states have call predecessors, (50), 31 states have call successors, (50) [2023-11-29 03:37:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 267 transitions. [2023-11-29 03:37:59,520 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 267 transitions. Word has length 36 [2023-11-29 03:37:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:59,521 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 267 transitions. [2023-11-29 03:37:59,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:37:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 267 transitions. [2023-11-29 03:37:59,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 03:37:59,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:59,522 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:59,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:37:59,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:59,727 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:37:59,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:59,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1448919219, now seen corresponding path program 1 times [2023-11-29 03:37:59,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:59,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598617101] [2023-11-29 03:37:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:59,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:59,735 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:37:59,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499638111] [2023-11-29 03:37:59,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:59,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:59,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:59,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:59,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:37:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:59,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:37:59,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:37:59,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:37:59,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:59,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598617101] [2023-11-29 03:37:59,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:37:59,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499638111] [2023-11-29 03:37:59,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499638111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:59,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:59,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:37:59,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046325586] [2023-11-29 03:37:59,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:59,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:37:59,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:59,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:37:59,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:37:59,815 INFO L87 Difference]: Start difference. First operand 197 states and 267 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:37:59,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:59,856 INFO L93 Difference]: Finished difference Result 208 states and 280 transitions. [2023-11-29 03:37:59,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:37:59,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2023-11-29 03:37:59,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:59,858 INFO L225 Difference]: With dead ends: 208 [2023-11-29 03:37:59,858 INFO L226 Difference]: Without dead ends: 207 [2023-11-29 03:37:59,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:37:59,859 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 4 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:59,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 157 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:37:59,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-29 03:37:59,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-11-29 03:37:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.2745098039215685) internal successors, (195), 158 states have internal predecessors, (195), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2023-11-29 03:37:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 278 transitions. [2023-11-29 03:37:59,875 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 278 transitions. Word has length 37 [2023-11-29 03:37:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:59,875 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 278 transitions. [2023-11-29 03:37:59,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:37:59,875 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 278 transitions. [2023-11-29 03:37:59,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 03:37:59,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:59,876 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:59,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:38:00,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:00,077 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:00,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash -331035498, now seen corresponding path program 1 times [2023-11-29 03:38:00,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:00,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800042276] [2023-11-29 03:38:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:00,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:00,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:00,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891398148] [2023-11-29 03:38:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:00,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:00,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:00,086 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:00,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:38:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:00,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:38:00,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 03:38:00,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:38:00,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:00,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800042276] [2023-11-29 03:38:00,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:00,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891398148] [2023-11-29 03:38:00,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891398148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:38:00,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:38:00,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:38:00,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253965468] [2023-11-29 03:38:00,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:38:00,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:38:00,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:00,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:38:00,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:38:00,168 INFO L87 Difference]: Start difference. First operand 207 states and 278 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:38:00,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:00,194 INFO L93 Difference]: Finished difference Result 207 states and 278 transitions. [2023-11-29 03:38:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:38:00,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-11-29 03:38:00,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:00,197 INFO L225 Difference]: With dead ends: 207 [2023-11-29 03:38:00,197 INFO L226 Difference]: Without dead ends: 206 [2023-11-29 03:38:00,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:38:00,198 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 8 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:00,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 136 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:38:00,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-29 03:38:00,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2023-11-29 03:38:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 153 states have (on average 1.2679738562091503) internal successors, (194), 157 states have internal predecessors, (194), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2023-11-29 03:38:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 277 transitions. [2023-11-29 03:38:00,211 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 277 transitions. Word has length 40 [2023-11-29 03:38:00,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:00,212 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 277 transitions. [2023-11-29 03:38:00,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:38:00,212 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 277 transitions. [2023-11-29 03:38:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 03:38:00,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:00,213 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:00,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:38:00,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:00,414 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:00,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:00,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1672165727, now seen corresponding path program 1 times [2023-11-29 03:38:00,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:00,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461936622] [2023-11-29 03:38:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:00,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:00,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:00,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655628385] [2023-11-29 03:38:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:00,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:00,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:00,423 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:00,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:38:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:00,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:38:00,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 03:38:00,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:38:00,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:00,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461936622] [2023-11-29 03:38:00,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:00,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655628385] [2023-11-29 03:38:00,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655628385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:38:00,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:38:00,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:38:00,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6281227] [2023-11-29 03:38:00,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:38:00,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:38:00,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:00,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:38:00,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:38:00,503 INFO L87 Difference]: Start difference. First operand 206 states and 277 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:38:00,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:00,537 INFO L93 Difference]: Finished difference Result 211 states and 281 transitions. [2023-11-29 03:38:00,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:38:00,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2023-11-29 03:38:00,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:00,539 INFO L225 Difference]: With dead ends: 211 [2023-11-29 03:38:00,539 INFO L226 Difference]: Without dead ends: 210 [2023-11-29 03:38:00,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:38:00,540 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 5 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:00,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 153 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:38:00,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-29 03:38:00,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2023-11-29 03:38:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 156 states have (on average 1.2628205128205128) internal successors, (197), 160 states have internal predecessors, (197), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2023-11-29 03:38:00,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 280 transitions. [2023-11-29 03:38:00,557 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 280 transitions. Word has length 41 [2023-11-29 03:38:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:00,557 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 280 transitions. [2023-11-29 03:38:00,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 03:38:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 280 transitions. [2023-11-29 03:38:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 03:38:00,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:00,559 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:00,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:38:00,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:00,761 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:00,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:00,761 INFO L85 PathProgramCache]: Analyzing trace with hash 478068558, now seen corresponding path program 1 times [2023-11-29 03:38:00,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:00,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96485114] [2023-11-29 03:38:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:00,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:00,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:00,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342162461] [2023-11-29 03:38:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:00,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:00,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:00,770 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:00,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:38:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:00,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:38:00,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:38:00,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:38:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:38:01,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:01,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96485114] [2023-11-29 03:38:01,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:01,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342162461] [2023-11-29 03:38:01,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342162461] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:38:01,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:38:01,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 03:38:01,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441200194] [2023-11-29 03:38:01,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:38:01,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:38:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:01,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:38:01,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:38:01,014 INFO L87 Difference]: Start difference. First operand 209 states and 280 transitions. Second operand has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:38:01,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:01,446 INFO L93 Difference]: Finished difference Result 302 states and 395 transitions. [2023-11-29 03:38:01,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 03:38:01,447 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2023-11-29 03:38:01,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:01,460 INFO L225 Difference]: With dead ends: 302 [2023-11-29 03:38:01,461 INFO L226 Difference]: Without dead ends: 301 [2023-11-29 03:38:01,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:38:01,462 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 140 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:01,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 562 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:38:01,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-29 03:38:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 271. [2023-11-29 03:38:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 203 states have (on average 1.3004926108374384) internal successors, (264), 209 states have internal predecessors, (264), 42 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (69), 49 states have call predecessors, (69), 42 states have call successors, (69) [2023-11-29 03:38:01,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 375 transitions. [2023-11-29 03:38:01,483 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 375 transitions. Word has length 46 [2023-11-29 03:38:01,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:01,483 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 375 transitions. [2023-11-29 03:38:01,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:38:01,484 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 375 transitions. [2023-11-29 03:38:01,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 03:38:01,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:01,485 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:01,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:38:01,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:38:01,691 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:01,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash 879531419, now seen corresponding path program 1 times [2023-11-29 03:38:01,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:01,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411186844] [2023-11-29 03:38:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:01,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:01,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:01,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809507602] [2023-11-29 03:38:01,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:01,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:01,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:01,701 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:01,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:38:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:01,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:38:01,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:01,816 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 03:38:01,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:38:01,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:01,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411186844] [2023-11-29 03:38:01,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:01,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809507602] [2023-11-29 03:38:01,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809507602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:38:01,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:38:01,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:38:01,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626472719] [2023-11-29 03:38:01,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:38:01,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:38:01,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:01,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:38:01,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:38:01,819 INFO L87 Difference]: Start difference. First operand 271 states and 375 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:38:01,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:01,894 INFO L93 Difference]: Finished difference Result 486 states and 675 transitions. [2023-11-29 03:38:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:38:01,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2023-11-29 03:38:01,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:01,897 INFO L225 Difference]: With dead ends: 486 [2023-11-29 03:38:01,897 INFO L226 Difference]: Without dead ends: 247 [2023-11-29 03:38:01,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:38:01,899 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 15 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:01,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 185 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:38:01,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-29 03:38:01,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2023-11-29 03:38:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 184 states have (on average 1.2880434782608696) internal successors, (237), 191 states have internal predecessors, (237), 37 states have call successors, (37), 11 states have call predecessors, (37), 14 states have return successors, (61), 43 states have call predecessors, (61), 37 states have call successors, (61) [2023-11-29 03:38:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2023-11-29 03:38:01,915 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 52 [2023-11-29 03:38:01,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:01,916 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2023-11-29 03:38:01,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:38:01,916 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2023-11-29 03:38:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 03:38:01,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:01,917 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:01,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:38:02,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:02,117 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:02,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:02,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1729509095, now seen corresponding path program 2 times [2023-11-29 03:38:02,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:02,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114737991] [2023-11-29 03:38:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:02,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:02,124 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:02,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542159858] [2023-11-29 03:38:02,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:38:02,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:02,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:02,126 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:02,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:38:02,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:38:02,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:38:02,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:38:02,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 03:38:02,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:38:02,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:02,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114737991] [2023-11-29 03:38:02,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:02,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542159858] [2023-11-29 03:38:02,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542159858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:38:02,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:38:02,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:38:02,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800907864] [2023-11-29 03:38:02,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:38:02,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:38:02,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:02,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:38:02,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:38:02,242 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:38:02,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:02,422 INFO L93 Difference]: Finished difference Result 505 states and 705 transitions. [2023-11-29 03:38:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:38:02,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2023-11-29 03:38:02,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:02,425 INFO L225 Difference]: With dead ends: 505 [2023-11-29 03:38:02,426 INFO L226 Difference]: Without dead ends: 295 [2023-11-29 03:38:02,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:38:02,428 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 53 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:02,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 308 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:38:02,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-29 03:38:02,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 288. [2023-11-29 03:38:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 216 states have (on average 1.3194444444444444) internal successors, (285), 221 states have internal predecessors, (285), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2023-11-29 03:38:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 405 transitions. [2023-11-29 03:38:02,447 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 405 transitions. Word has length 52 [2023-11-29 03:38:02,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:02,448 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 405 transitions. [2023-11-29 03:38:02,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:38:02,448 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 405 transitions. [2023-11-29 03:38:02,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 03:38:02,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:02,449 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:02,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:38:02,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:02,649 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:02,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:02,650 INFO L85 PathProgramCache]: Analyzing trace with hash -493314104, now seen corresponding path program 1 times [2023-11-29 03:38:02,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:02,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618507893] [2023-11-29 03:38:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:02,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:02,656 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:02,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869038410] [2023-11-29 03:38:02,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:02,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:02,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:02,658 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:02,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:38:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:02,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:38:02,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:38:02,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:38:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:38:02,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:02,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618507893] [2023-11-29 03:38:02,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:02,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869038410] [2023-11-29 03:38:02,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869038410] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:38:02,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:38:02,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-29 03:38:02,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659833154] [2023-11-29 03:38:02,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:38:02,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:38:02,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:02,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:38:02,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:38:02,908 INFO L87 Difference]: Start difference. First operand 288 states and 405 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:38:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:03,101 INFO L93 Difference]: Finished difference Result 521 states and 726 transitions. [2023-11-29 03:38:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:38:03,102 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2023-11-29 03:38:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:03,104 INFO L225 Difference]: With dead ends: 521 [2023-11-29 03:38:03,104 INFO L226 Difference]: Without dead ends: 316 [2023-11-29 03:38:03,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:38:03,107 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 50 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:03,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 319 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:38:03,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-29 03:38:03,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 299. [2023-11-29 03:38:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 227 states have (on average 1.3127753303964758) internal successors, (298), 232 states have internal predecessors, (298), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2023-11-29 03:38:03,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 418 transitions. [2023-11-29 03:38:03,128 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 418 transitions. Word has length 51 [2023-11-29 03:38:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:03,128 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 418 transitions. [2023-11-29 03:38:03,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:38:03,128 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 418 transitions. [2023-11-29 03:38:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 03:38:03,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:03,129 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:03,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:38:03,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:03,330 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:03,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:03,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1809303895, now seen corresponding path program 1 times [2023-11-29 03:38:03,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:03,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208104934] [2023-11-29 03:38:03,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:03,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:03,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857242317] [2023-11-29 03:38:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:03,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:03,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:03,339 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:03,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:38:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:03,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:38:03,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 03:38:03,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:38:03,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:03,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208104934] [2023-11-29 03:38:03,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:03,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857242317] [2023-11-29 03:38:03,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857242317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:38:03,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:38:03,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:38:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168784263] [2023-11-29 03:38:03,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:38:03,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:38:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:03,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:38:03,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:38:03,444 INFO L87 Difference]: Start difference. First operand 299 states and 418 transitions. Second operand has 6 states, 4 states have (on average 7.75) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:38:03,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:03,486 INFO L93 Difference]: Finished difference Result 299 states and 418 transitions. [2023-11-29 03:38:03,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:38:03,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.75) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2023-11-29 03:38:03,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:03,489 INFO L225 Difference]: With dead ends: 299 [2023-11-29 03:38:03,489 INFO L226 Difference]: Without dead ends: 298 [2023-11-29 03:38:03,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:38:03,490 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:03,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 148 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:38:03,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-29 03:38:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2023-11-29 03:38:03,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 227 states have (on average 1.2995594713656389) internal successors, (295), 231 states have internal predecessors, (295), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2023-11-29 03:38:03,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 415 transitions. [2023-11-29 03:38:03,511 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 415 transitions. Word has length 53 [2023-11-29 03:38:03,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:03,511 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 415 transitions. [2023-11-29 03:38:03,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.75) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:38:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 415 transitions. [2023-11-29 03:38:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 03:38:03,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:03,512 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:03,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 03:38:03,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 03:38:03,713 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:03,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:03,713 INFO L85 PathProgramCache]: Analyzing trace with hash -253845853, now seen corresponding path program 1 times [2023-11-29 03:38:03,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:03,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339873154] [2023-11-29 03:38:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:03,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:03,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:03,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698950461] [2023-11-29 03:38:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:03,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:03,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:03,720 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:03,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:38:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:03,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:38:03,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 03:38:03,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:38:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 03:38:04,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:04,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339873154] [2023-11-29 03:38:04,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:04,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698950461] [2023-11-29 03:38:04,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698950461] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:38:04,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:38:04,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-29 03:38:04,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038809013] [2023-11-29 03:38:04,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:38:04,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:38:04,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:38:04,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:38:04,664 INFO L87 Difference]: Start difference. First operand 298 states and 415 transitions. Second operand has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 03:38:06,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:06,803 INFO L93 Difference]: Finished difference Result 589 states and 807 transitions. [2023-11-29 03:38:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:38:06,804 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 54 [2023-11-29 03:38:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:06,807 INFO L225 Difference]: With dead ends: 589 [2023-11-29 03:38:06,807 INFO L226 Difference]: Without dead ends: 379 [2023-11-29 03:38:06,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:38:06,809 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 138 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:06,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 647 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 03:38:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-11-29 03:38:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 358. [2023-11-29 03:38:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 277 states have (on average 1.2815884476534296) internal successors, (355), 276 states have internal predecessors, (355), 52 states have call successors, (52), 16 states have call predecessors, (52), 19 states have return successors, (85), 65 states have call predecessors, (85), 52 states have call successors, (85) [2023-11-29 03:38:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 492 transitions. [2023-11-29 03:38:06,836 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 492 transitions. Word has length 54 [2023-11-29 03:38:06,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:06,836 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 492 transitions. [2023-11-29 03:38:06,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 03:38:06,836 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 492 transitions. [2023-11-29 03:38:06,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 03:38:06,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:06,837 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:06,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:38:07,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 03:38:07,038 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:07,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1335824881, now seen corresponding path program 1 times [2023-11-29 03:38:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:07,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073879779] [2023-11-29 03:38:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:07,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:07,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278308250] [2023-11-29 03:38:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:07,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:07,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:07,048 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:07,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:38:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:07,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:38:07,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 03:38:07,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:38:07,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:07,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073879779] [2023-11-29 03:38:07,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:07,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278308250] [2023-11-29 03:38:07,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278308250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:38:07,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:38:07,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:38:07,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333895493] [2023-11-29 03:38:07,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:38:07,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:38:07,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:07,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:38:07,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:38:07,153 INFO L87 Difference]: Start difference. First operand 358 states and 492 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 03:38:07,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:07,265 INFO L93 Difference]: Finished difference Result 674 states and 921 transitions. [2023-11-29 03:38:07,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:38:07,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 62 [2023-11-29 03:38:07,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:07,268 INFO L225 Difference]: With dead ends: 674 [2023-11-29 03:38:07,268 INFO L226 Difference]: Without dead ends: 363 [2023-11-29 03:38:07,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:38:07,271 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 39 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:07,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 320 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:38:07,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-29 03:38:07,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 354. [2023-11-29 03:38:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 274 states have (on average 1.27007299270073) internal successors, (348), 273 states have internal predecessors, (348), 50 states have call successors, (50), 17 states have call predecessors, (50), 20 states have return successors, (79), 63 states have call predecessors, (79), 50 states have call successors, (79) [2023-11-29 03:38:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 477 transitions. [2023-11-29 03:38:07,294 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 477 transitions. Word has length 62 [2023-11-29 03:38:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:07,295 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 477 transitions. [2023-11-29 03:38:07,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 03:38:07,295 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 477 transitions. [2023-11-29 03:38:07,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 03:38:07,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:07,296 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:07,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 03:38:07,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 03:38:07,496 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:07,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:07,497 INFO L85 PathProgramCache]: Analyzing trace with hash -468074329, now seen corresponding path program 1 times [2023-11-29 03:38:07,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:07,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161397099] [2023-11-29 03:38:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:07,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:07,504 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:07,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228119353] [2023-11-29 03:38:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:07,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:07,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:07,505 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:07,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:38:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:07,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:38:07,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:07,647 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-29 03:38:07,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:38:07,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:07,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161397099] [2023-11-29 03:38:07,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:07,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228119353] [2023-11-29 03:38:07,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228119353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:38:07,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:38:07,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:38:07,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122020079] [2023-11-29 03:38:07,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:38:07,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:38:07,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:07,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:38:07,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:38:07,650 INFO L87 Difference]: Start difference. First operand 354 states and 477 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 03:38:07,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:07,804 INFO L93 Difference]: Finished difference Result 361 states and 477 transitions. [2023-11-29 03:38:07,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:38:07,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2023-11-29 03:38:07,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:07,808 INFO L225 Difference]: With dead ends: 361 [2023-11-29 03:38:07,808 INFO L226 Difference]: Without dead ends: 360 [2023-11-29 03:38:07,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:38:07,809 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 37 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:07,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 363 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:38:07,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-29 03:38:07,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 354. [2023-11-29 03:38:07,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 274 states have (on average 1.2627737226277371) internal successors, (346), 273 states have internal predecessors, (346), 50 states have call successors, (50), 17 states have call predecessors, (50), 20 states have return successors, (79), 63 states have call predecessors, (79), 50 states have call successors, (79) [2023-11-29 03:38:07,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 475 transitions. [2023-11-29 03:38:07,832 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 475 transitions. Word has length 64 [2023-11-29 03:38:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:07,832 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 475 transitions. [2023-11-29 03:38:07,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 03:38:07,833 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 475 transitions. [2023-11-29 03:38:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 03:38:07,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:07,834 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:07,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:38:08,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 03:38:08,035 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:08,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:08,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1625402257, now seen corresponding path program 1 times [2023-11-29 03:38:08,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:08,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260016688] [2023-11-29 03:38:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:08,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:08,042 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:08,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341043112] [2023-11-29 03:38:08,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:08,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:08,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:08,043 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:08,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:38:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:08,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:38:08,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-29 03:38:08,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:38:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-29 03:38:08,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:08,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260016688] [2023-11-29 03:38:08,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:08,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341043112] [2023-11-29 03:38:08,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341043112] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:38:08,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:38:08,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 03:38:08,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830925163] [2023-11-29 03:38:08,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:38:08,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:38:08,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:38:08,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:38:08,265 INFO L87 Difference]: Start difference. First operand 354 states and 475 transitions. Second operand has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 03:38:08,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:08,465 INFO L93 Difference]: Finished difference Result 432 states and 580 transitions. [2023-11-29 03:38:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:38:08,465 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 65 [2023-11-29 03:38:08,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:08,468 INFO L225 Difference]: With dead ends: 432 [2023-11-29 03:38:08,468 INFO L226 Difference]: Without dead ends: 431 [2023-11-29 03:38:08,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:38:08,469 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 124 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:08,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 437 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:38:08,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-11-29 03:38:08,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 411. [2023-11-29 03:38:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 317 states have (on average 1.2681388012618298) internal successors, (402), 315 states have internal predecessors, (402), 62 states have call successors, (62), 19 states have call predecessors, (62), 22 states have return successors, (100), 76 states have call predecessors, (100), 62 states have call successors, (100) [2023-11-29 03:38:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 564 transitions. [2023-11-29 03:38:08,498 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 564 transitions. Word has length 65 [2023-11-29 03:38:08,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:08,498 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 564 transitions. [2023-11-29 03:38:08,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 03:38:08,498 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 564 transitions. [2023-11-29 03:38:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 03:38:08,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:08,499 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:08,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 03:38:08,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 03:38:08,700 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:08,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:08,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1470442923, now seen corresponding path program 1 times [2023-11-29 03:38:08,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:08,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033909852] [2023-11-29 03:38:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:08,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:08,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:08,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685757864] [2023-11-29 03:38:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:08,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:08,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:08,710 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:08,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:38:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:08,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:38:08,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 03:38:08,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:38:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-29 03:38:08,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:08,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033909852] [2023-11-29 03:38:08,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:08,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685757864] [2023-11-29 03:38:08,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685757864] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:38:08,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:38:08,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2023-11-29 03:38:08,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776721237] [2023-11-29 03:38:08,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:38:08,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:38:08,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:08,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:38:08,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:38:08,921 INFO L87 Difference]: Start difference. First operand 411 states and 564 transitions. Second operand has 11 states, 10 states have (on average 4.8) internal successors, (48), 8 states have internal predecessors, (48), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 03:38:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:09,126 INFO L93 Difference]: Finished difference Result 795 states and 1100 transitions. [2023-11-29 03:38:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:38:09,127 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 8 states have internal predecessors, (48), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 74 [2023-11-29 03:38:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:09,130 INFO L225 Difference]: With dead ends: 795 [2023-11-29 03:38:09,130 INFO L226 Difference]: Without dead ends: 422 [2023-11-29 03:38:09,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 130 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:38:09,132 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:09,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 387 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:38:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-29 03:38:09,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 412. [2023-11-29 03:38:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 317 states have (on average 1.2649842271293374) internal successors, (401), 316 states have internal predecessors, (401), 62 states have call successors, (62), 20 states have call predecessors, (62), 23 states have return successors, (98), 75 states have call predecessors, (98), 62 states have call successors, (98) [2023-11-29 03:38:09,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 561 transitions. [2023-11-29 03:38:09,152 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 561 transitions. Word has length 74 [2023-11-29 03:38:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:09,152 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 561 transitions. [2023-11-29 03:38:09,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 8 states have internal predecessors, (48), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 03:38:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 561 transitions. [2023-11-29 03:38:09,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 03:38:09,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:09,153 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:09,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 03:38:09,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 03:38:09,354 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:09,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1065383484, now seen corresponding path program 2 times [2023-11-29 03:38:09,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:09,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013535654] [2023-11-29 03:38:09,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:09,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:09,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:09,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693542002] [2023-11-29 03:38:09,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:38:09,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:09,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:09,361 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:09,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 03:38:09,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:38:09,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:38:09,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:38:09,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:09,504 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-29 03:38:09,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:38:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-29 03:38:09,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013535654] [2023-11-29 03:38:09,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693542002] [2023-11-29 03:38:09,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693542002] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:38:09,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:38:09,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 03:38:09,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332066544] [2023-11-29 03:38:09,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:38:09,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:38:09,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:09,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:38:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:38:09,618 INFO L87 Difference]: Start difference. First operand 412 states and 561 transitions. Second operand has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 03:38:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:09,935 INFO L93 Difference]: Finished difference Result 470 states and 616 transitions. [2023-11-29 03:38:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:38:09,936 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 70 [2023-11-29 03:38:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:09,938 INFO L225 Difference]: With dead ends: 470 [2023-11-29 03:38:09,938 INFO L226 Difference]: Without dead ends: 469 [2023-11-29 03:38:09,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:38:09,939 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 137 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:09,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 479 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:38:09,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-11-29 03:38:09,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 461. [2023-11-29 03:38:09,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 355 states have (on average 1.2535211267605635) internal successors, (445), 356 states have internal predecessors, (445), 66 states have call successors, (66), 24 states have call predecessors, (66), 30 states have return successors, (103), 80 states have call predecessors, (103), 66 states have call successors, (103) [2023-11-29 03:38:09,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 614 transitions. [2023-11-29 03:38:09,960 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 614 transitions. Word has length 70 [2023-11-29 03:38:09,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:09,960 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 614 transitions. [2023-11-29 03:38:09,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 03:38:09,960 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 614 transitions. [2023-11-29 03:38:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 03:38:09,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:09,961 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:09,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 03:38:10,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 03:38:10,162 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:10,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:10,162 INFO L85 PathProgramCache]: Analyzing trace with hash -511999754, now seen corresponding path program 1 times [2023-11-29 03:38:10,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:10,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732357238] [2023-11-29 03:38:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:10,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:10,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:10,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365281015] [2023-11-29 03:38:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:10,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:10,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:10,170 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:10,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 03:38:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:10,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:38:10,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-29 03:38:10,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:38:10,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:10,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732357238] [2023-11-29 03:38:10,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:10,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365281015] [2023-11-29 03:38:10,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365281015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:38:10,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:38:10,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 03:38:10,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230824637] [2023-11-29 03:38:10,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:38:10,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:38:10,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:10,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:38:10,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:38:10,329 INFO L87 Difference]: Start difference. First operand 461 states and 614 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 03:38:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:10,527 INFO L93 Difference]: Finished difference Result 866 states and 1164 transitions. [2023-11-29 03:38:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:38:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2023-11-29 03:38:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:10,531 INFO L225 Difference]: With dead ends: 866 [2023-11-29 03:38:10,531 INFO L226 Difference]: Without dead ends: 460 [2023-11-29 03:38:10,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:38:10,533 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 48 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:10,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 255 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:38:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-11-29 03:38:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 453. [2023-11-29 03:38:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 348 states have (on average 1.2557471264367817) internal successors, (437), 350 states have internal predecessors, (437), 66 states have call successors, (66), 24 states have call predecessors, (66), 29 states have return successors, (101), 78 states have call predecessors, (101), 66 states have call successors, (101) [2023-11-29 03:38:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 604 transitions. [2023-11-29 03:38:10,562 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 604 transitions. Word has length 74 [2023-11-29 03:38:10,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:10,563 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 604 transitions. [2023-11-29 03:38:10,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 03:38:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 604 transitions. [2023-11-29 03:38:10,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 03:38:10,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:10,564 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:10,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 03:38:10,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 03:38:10,771 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:10,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:10,771 INFO L85 PathProgramCache]: Analyzing trace with hash 23693201, now seen corresponding path program 2 times [2023-11-29 03:38:10,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:10,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303584483] [2023-11-29 03:38:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:10,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:10,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:10,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158490197] [2023-11-29 03:38:10,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:38:10,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:10,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:10,778 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:10,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 03:38:10,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:38:10,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:38:10,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:38:10,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 03:38:10,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:38:11,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:11,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303584483] [2023-11-29 03:38:11,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:11,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158490197] [2023-11-29 03:38:11,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158490197] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:38:11,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:38:11,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 03:38:11,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410184645] [2023-11-29 03:38:11,329 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:38:11,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:38:11,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:11,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:38:11,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:38:11,331 INFO L87 Difference]: Start difference. First operand 453 states and 604 transitions. Second operand has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 03:38:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:11,517 INFO L93 Difference]: Finished difference Result 487 states and 638 transitions. [2023-11-29 03:38:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:38:11,517 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 78 [2023-11-29 03:38:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:11,521 INFO L225 Difference]: With dead ends: 487 [2023-11-29 03:38:11,521 INFO L226 Difference]: Without dead ends: 486 [2023-11-29 03:38:11,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:38:11,522 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 52 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:11,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 433 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:38:11,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-29 03:38:11,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 477. [2023-11-29 03:38:11,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 367 states have (on average 1.2452316076294279) internal successors, (457), 369 states have internal predecessors, (457), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (103), 80 states have call predecessors, (103), 68 states have call successors, (103) [2023-11-29 03:38:11,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 628 transitions. [2023-11-29 03:38:11,552 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 628 transitions. Word has length 78 [2023-11-29 03:38:11,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:11,552 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 628 transitions. [2023-11-29 03:38:11,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 03:38:11,553 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 628 transitions. [2023-11-29 03:38:11,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 03:38:11,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:11,554 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:11,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 03:38:11,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:11,754 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:11,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:11,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1688221236, now seen corresponding path program 1 times [2023-11-29 03:38:11,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:11,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577358207] [2023-11-29 03:38:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:11,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:11,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:11,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752072005] [2023-11-29 03:38:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:11,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:11,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:11,762 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:11,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 03:38:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:11,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:38:11,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-29 03:38:11,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:38:12,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:12,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577358207] [2023-11-29 03:38:12,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:12,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752072005] [2023-11-29 03:38:12,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752072005] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:38:12,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:38:12,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-11-29 03:38:12,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943238389] [2023-11-29 03:38:12,058 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:38:12,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:38:12,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:12,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:38:12,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:38:12,059 INFO L87 Difference]: Start difference. First operand 477 states and 628 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:38:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:12,109 INFO L93 Difference]: Finished difference Result 517 states and 690 transitions. [2023-11-29 03:38:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:38:12,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2023-11-29 03:38:12,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:12,113 INFO L225 Difference]: With dead ends: 517 [2023-11-29 03:38:12,113 INFO L226 Difference]: Without dead ends: 516 [2023-11-29 03:38:12,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:38:12,114 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 8 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:12,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 179 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:38:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-11-29 03:38:12,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 489. [2023-11-29 03:38:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 379 states have (on average 1.229551451187335) internal successors, (466), 375 states have internal predecessors, (466), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (103), 86 states have call predecessors, (103), 68 states have call successors, (103) [2023-11-29 03:38:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 637 transitions. [2023-11-29 03:38:12,151 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 637 transitions. Word has length 82 [2023-11-29 03:38:12,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:12,151 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 637 transitions. [2023-11-29 03:38:12,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:38:12,152 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 637 transitions. [2023-11-29 03:38:12,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 03:38:12,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:12,153 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:12,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 03:38:12,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 03:38:12,358 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:12,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:12,358 INFO L85 PathProgramCache]: Analyzing trace with hash -795250704, now seen corresponding path program 1 times [2023-11-29 03:38:12,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:12,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901884483] [2023-11-29 03:38:12,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:12,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:12,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:12,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237670204] [2023-11-29 03:38:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:12,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:12,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:12,366 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:12,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 03:38:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:12,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:38:12,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-29 03:38:12,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:38:12,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:12,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901884483] [2023-11-29 03:38:12,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:12,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237670204] [2023-11-29 03:38:12,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237670204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:38:12,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:38:12,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-11-29 03:38:12,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453376457] [2023-11-29 03:38:12,682 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:38:12,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:38:12,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:12,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:38:12,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:38:12,683 INFO L87 Difference]: Start difference. First operand 489 states and 637 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:38:12,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:12,738 INFO L93 Difference]: Finished difference Result 516 states and 681 transitions. [2023-11-29 03:38:12,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:38:12,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2023-11-29 03:38:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:12,741 INFO L225 Difference]: With dead ends: 516 [2023-11-29 03:38:12,741 INFO L226 Difference]: Without dead ends: 515 [2023-11-29 03:38:12,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:38:12,742 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:12,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 181 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:38:12,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-11-29 03:38:12,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 474. [2023-11-29 03:38:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 364 states have (on average 1.2307692307692308) internal successors, (448), 367 states have internal predecessors, (448), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (103), 79 states have call predecessors, (103), 68 states have call successors, (103) [2023-11-29 03:38:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 619 transitions. [2023-11-29 03:38:12,773 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 619 transitions. Word has length 83 [2023-11-29 03:38:12,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:12,773 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 619 transitions. [2023-11-29 03:38:12,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:38:12,774 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 619 transitions. [2023-11-29 03:38:12,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-29 03:38:12,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:12,775 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:12,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 03:38:12,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 03:38:12,975 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:12,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:12,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1117032014, now seen corresponding path program 2 times [2023-11-29 03:38:12,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:12,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646274304] [2023-11-29 03:38:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:12,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:12,982 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:12,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914649198] [2023-11-29 03:38:12,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:38:12,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:12,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:12,983 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:12,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 03:38:13,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:38:13,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:38:13,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:38:13,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-29 03:38:13,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:38:13,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:38:13,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646274304] [2023-11-29 03:38:13,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:38:13,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914649198] [2023-11-29 03:38:13,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914649198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:38:13,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:38:13,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:38:13,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114863627] [2023-11-29 03:38:13,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:38:13,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:38:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:38:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:38:13,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:38:13,261 INFO L87 Difference]: Start difference. First operand 474 states and 619 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 03:38:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:38:14,082 INFO L93 Difference]: Finished difference Result 478 states and 627 transitions. [2023-11-29 03:38:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:38:14,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 84 [2023-11-29 03:38:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:38:14,085 INFO L225 Difference]: With dead ends: 478 [2023-11-29 03:38:14,085 INFO L226 Difference]: Without dead ends: 476 [2023-11-29 03:38:14,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:38:14,086 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 12 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:38:14,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 226 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:38:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-11-29 03:38:14,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 472. [2023-11-29 03:38:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 364 states have (on average 1.1895604395604396) internal successors, (433), 365 states have internal predecessors, (433), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (103), 79 states have call predecessors, (103), 68 states have call successors, (103) [2023-11-29 03:38:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 604 transitions. [2023-11-29 03:38:14,116 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 604 transitions. Word has length 84 [2023-11-29 03:38:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:38:14,116 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 604 transitions. [2023-11-29 03:38:14,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 03:38:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 604 transitions. [2023-11-29 03:38:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 03:38:14,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:38:14,117 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:38:14,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 03:38:14,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:14,320 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:38:14,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:38:14,320 INFO L85 PathProgramCache]: Analyzing trace with hash 268254130, now seen corresponding path program 1 times [2023-11-29 03:38:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:38:14,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559700246] [2023-11-29 03:38:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:14,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:38:14,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:38:14,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663850517] [2023-11-29 03:38:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:38:14,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:38:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:38:14,330 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:38:14,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 03:38:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:38:14,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 03:38:14,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:38:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 59 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 03:38:14,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:39:14,509 WARN L293 SmtUtils]: Spent 9.40s on a formula simplification. DAG size of input: 114 DAG size of output: 108 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:40:10,972 WARN L293 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:41:23,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:41:23,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559700246] [2023-11-29 03:41:23,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:41:23,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663850517] [2023-11-29 03:41:23,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663850517] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:41:23,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:41:23,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-29 03:41:23,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477491847] [2023-11-29 03:41:23,115 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:41:23,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:41:23,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:41:23,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:41:23,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=519, Unknown=15, NotChecked=0, Total=600 [2023-11-29 03:41:23,116 INFO L87 Difference]: Start difference. First operand 472 states and 604 transitions. Second operand has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 8 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-29 03:42:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:39,910 INFO L93 Difference]: Finished difference Result 519 states and 691 transitions. [2023-11-29 03:42:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:42:39,911 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 8 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 85 [2023-11-29 03:42:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:39,914 INFO L225 Difference]: With dead ends: 519 [2023-11-29 03:42:39,914 INFO L226 Difference]: Without dead ends: 518 [2023-11-29 03:42:39,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 248.5s TimeCoverageRelationStatistics Valid=151, Invalid=1080, Unknown=29, NotChecked=0, Total=1260 [2023-11-29 03:42:39,916 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 76 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:39,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 333 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:42:39,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2023-11-29 03:42:39,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 484. [2023-11-29 03:42:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 374 states have (on average 1.1844919786096257) internal successors, (443), 375 states have internal predecessors, (443), 68 states have call successors, (68), 27 states have call predecessors, (68), 34 states have return successors, (106), 81 states have call predecessors, (106), 68 states have call successors, (106) [2023-11-29 03:42:39,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 617 transitions. [2023-11-29 03:42:39,948 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 617 transitions. Word has length 85 [2023-11-29 03:42:39,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:39,949 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 617 transitions. [2023-11-29 03:42:39,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 18 states have internal predecessors, (54), 8 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-29 03:42:39,949 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 617 transitions. [2023-11-29 03:42:39,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 03:42:39,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:39,950 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:39,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-29 03:42:40,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:40,151 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:40,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:40,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1314241226, now seen corresponding path program 2 times [2023-11-29 03:42:40,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:40,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948321737] [2023-11-29 03:42:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:40,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:40,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:40,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899336490] [2023-11-29 03:42:40,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:42:40,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:40,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:40,160 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:40,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 03:42:40,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:42:40,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:42:40,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:42:40,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 70 proven. 7 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 03:42:40,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-29 03:42:40,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:40,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948321737] [2023-11-29 03:42:40,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:40,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899336490] [2023-11-29 03:42:40,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899336490] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:40,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:42:40,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2023-11-29 03:42:40,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398250726] [2023-11-29 03:42:40,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:40,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:42:40,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:40,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:42:40,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:42:40,852 INFO L87 Difference]: Start difference. First operand 484 states and 617 transitions. Second operand has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 16 states have internal predecessors, (76), 10 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-29 03:42:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:41,673 INFO L93 Difference]: Finished difference Result 919 states and 1217 transitions. [2023-11-29 03:42:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:42:41,673 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 16 states have internal predecessors, (76), 10 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 95 [2023-11-29 03:42:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:41,677 INFO L225 Difference]: With dead ends: 919 [2023-11-29 03:42:41,677 INFO L226 Difference]: Without dead ends: 507 [2023-11-29 03:42:41,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 172 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:42:41,679 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 87 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:41,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 530 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:42:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2023-11-29 03:42:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 473. [2023-11-29 03:42:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 364 states have (on average 1.1868131868131868) internal successors, (432), 366 states have internal predecessors, (432), 67 states have call successors, (67), 27 states have call predecessors, (67), 34 states have return successors, (119), 79 states have call predecessors, (119), 67 states have call successors, (119) [2023-11-29 03:42:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 618 transitions. [2023-11-29 03:42:41,705 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 618 transitions. Word has length 95 [2023-11-29 03:42:41,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:41,705 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 618 transitions. [2023-11-29 03:42:41,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 16 states have internal predecessors, (76), 10 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-29 03:42:41,706 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 618 transitions. [2023-11-29 03:42:41,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 03:42:41,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:41,707 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:41,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 03:42:41,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 03:42:41,913 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:41,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2065227540, now seen corresponding path program 1 times [2023-11-29 03:42:41,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:41,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76569889] [2023-11-29 03:42:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:41,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:41,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:41,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402012449] [2023-11-29 03:42:41,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:41,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:41,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:41,923 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:41,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 03:42:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:41,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:42:41,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-29 03:42:42,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-29 03:42:42,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:42,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76569889] [2023-11-29 03:42:42,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:42,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402012449] [2023-11-29 03:42:42,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402012449] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:42,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:42:42,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 03:42:42,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927957138] [2023-11-29 03:42:42,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:42,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:42:42,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:42,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:42:42,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:42:42,364 INFO L87 Difference]: Start difference. First operand 473 states and 618 transitions. Second operand has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 03:42:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:42,917 INFO L93 Difference]: Finished difference Result 642 states and 836 transitions. [2023-11-29 03:42:42,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 03:42:42,918 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 104 [2023-11-29 03:42:42,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:42,921 INFO L225 Difference]: With dead ends: 642 [2023-11-29 03:42:42,921 INFO L226 Difference]: Without dead ends: 639 [2023-11-29 03:42:42,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:42:42,922 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 131 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:42,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 384 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:42:42,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-11-29 03:42:42,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 620. [2023-11-29 03:42:42,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 480 states have (on average 1.1958333333333333) internal successors, (574), 482 states have internal predecessors, (574), 90 states have call successors, (90), 33 states have call predecessors, (90), 42 states have return successors, (158), 104 states have call predecessors, (158), 90 states have call successors, (158) [2023-11-29 03:42:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 822 transitions. [2023-11-29 03:42:42,968 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 822 transitions. Word has length 104 [2023-11-29 03:42:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:42,968 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 822 transitions. [2023-11-29 03:42:42,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 03:42:42,969 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 822 transitions. [2023-11-29 03:42:42,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 03:42:42,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:42,970 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:42,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 03:42:43,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:43,171 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:43,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1515925429, now seen corresponding path program 2 times [2023-11-29 03:42:43,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:43,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425130726] [2023-11-29 03:42:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:43,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:43,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157436037] [2023-11-29 03:42:43,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:42:43,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:43,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:43,181 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:43,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 03:42:43,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:42:43,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:42:43,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:42:43,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-11-29 03:42:43,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:42:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425130726] [2023-11-29 03:42:43,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:43,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157436037] [2023-11-29 03:42:43,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157436037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:43,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:43,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:42:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408508270] [2023-11-29 03:42:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:43,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:42:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:43,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:42:43,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:42:43,354 INFO L87 Difference]: Start difference. First operand 620 states and 822 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 03:42:43,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:43,487 INFO L93 Difference]: Finished difference Result 991 states and 1322 transitions. [2023-11-29 03:42:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:42:43,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 110 [2023-11-29 03:42:43,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:43,490 INFO L225 Difference]: With dead ends: 991 [2023-11-29 03:42:43,490 INFO L226 Difference]: Without dead ends: 540 [2023-11-29 03:42:43,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:42:43,492 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 23 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:43,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 202 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:42:43,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2023-11-29 03:42:43,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 539. [2023-11-29 03:42:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 418 states have (on average 1.174641148325359) internal successors, (491), 420 states have internal predecessors, (491), 75 states have call successors, (75), 30 states have call predecessors, (75), 38 states have return successors, (129), 88 states have call predecessors, (129), 75 states have call successors, (129) [2023-11-29 03:42:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 695 transitions. [2023-11-29 03:42:43,516 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 695 transitions. Word has length 110 [2023-11-29 03:42:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:43,516 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 695 transitions. [2023-11-29 03:42:43,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 03:42:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 695 transitions. [2023-11-29 03:42:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 03:42:43,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:43,518 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:43,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 03:42:43,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:43,718 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:43,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:43,719 INFO L85 PathProgramCache]: Analyzing trace with hash -510492095, now seen corresponding path program 1 times [2023-11-29 03:42:43,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:43,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173040567] [2023-11-29 03:42:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:43,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:43,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:43,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472346085] [2023-11-29 03:42:43,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:43,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:43,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:43,726 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:43,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 03:42:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:43,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:42:43,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-11-29 03:42:43,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-11-29 03:42:44,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:44,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173040567] [2023-11-29 03:42:44,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:44,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472346085] [2023-11-29 03:42:44,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472346085] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:44,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:42:44,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-29 03:42:44,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507133529] [2023-11-29 03:42:44,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:44,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:42:44,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:44,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:42:44,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:42:44,906 INFO L87 Difference]: Start difference. First operand 539 states and 695 transitions. Second operand has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 03:42:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:47,353 INFO L93 Difference]: Finished difference Result 952 states and 1238 transitions. [2023-11-29 03:42:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:42:47,354 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 112 [2023-11-29 03:42:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:47,357 INFO L225 Difference]: With dead ends: 952 [2023-11-29 03:42:47,357 INFO L226 Difference]: Without dead ends: 555 [2023-11-29 03:42:47,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:42:47,359 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 126 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:47,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 717 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 03:42:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-11-29 03:42:47,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 541. [2023-11-29 03:42:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 421 states have (on average 1.163895486935867) internal successors, (490), 423 states have internal predecessors, (490), 72 states have call successors, (72), 31 states have call predecessors, (72), 40 states have return successors, (122), 86 states have call predecessors, (122), 72 states have call successors, (122) [2023-11-29 03:42:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 684 transitions. [2023-11-29 03:42:47,384 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 684 transitions. Word has length 112 [2023-11-29 03:42:47,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:47,384 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 684 transitions. [2023-11-29 03:42:47,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 03:42:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 684 transitions. [2023-11-29 03:42:47,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 03:42:47,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:47,385 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:47,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 03:42:47,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 03:42:47,591 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:47,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:47,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1621865831, now seen corresponding path program 1 times [2023-11-29 03:42:47,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:47,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377888601] [2023-11-29 03:42:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:47,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:47,600 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:47,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499937229] [2023-11-29 03:42:47,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:47,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:47,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:47,601 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:47,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 03:42:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:47,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 03:42:47,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 84 proven. 23 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-29 03:42:47,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:48,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:48,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377888601] [2023-11-29 03:42:48,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:48,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499937229] [2023-11-29 03:42:48,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499937229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:42:48,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:42:48,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-29 03:42:48,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631767939] [2023-11-29 03:42:48,140 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:48,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:42:48,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:48,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:42:48,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:42:48,142 INFO L87 Difference]: Start difference. First operand 541 states and 684 transitions. Second operand has 16 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 03:42:49,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:49,098 INFO L93 Difference]: Finished difference Result 1088 states and 1432 transitions. [2023-11-29 03:42:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:42:49,099 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 117 [2023-11-29 03:42:49,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:49,102 INFO L225 Difference]: With dead ends: 1088 [2023-11-29 03:42:49,102 INFO L226 Difference]: Without dead ends: 714 [2023-11-29 03:42:49,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:42:49,104 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 80 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:49,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 611 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:42:49,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2023-11-29 03:42:49,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 640. [2023-11-29 03:42:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 496 states have (on average 1.1814516129032258) internal successors, (586), 500 states have internal predecessors, (586), 90 states have call successors, (90), 36 states have call predecessors, (90), 46 states have return successors, (155), 103 states have call predecessors, (155), 90 states have call successors, (155) [2023-11-29 03:42:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 831 transitions. [2023-11-29 03:42:49,141 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 831 transitions. Word has length 117 [2023-11-29 03:42:49,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:49,142 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 831 transitions. [2023-11-29 03:42:49,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 03:42:49,142 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 831 transitions. [2023-11-29 03:42:49,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 03:42:49,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:49,143 INFO L195 NwaCegarLoop]: trace histogram [13, 10, 7, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:49,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 03:42:49,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 03:42:49,343 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:49,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:49,343 INFO L85 PathProgramCache]: Analyzing trace with hash 919446535, now seen corresponding path program 2 times [2023-11-29 03:42:49,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:49,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234591846] [2023-11-29 03:42:49,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:49,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:49,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:49,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [457094333] [2023-11-29 03:42:49,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:42:49,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:49,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:49,353 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:49,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 03:42:49,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:42:49,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:42:49,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:42:49,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 185 proven. 10 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-29 03:42:49,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 94 proven. 31 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-11-29 03:42:49,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:49,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234591846] [2023-11-29 03:42:49,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457094333] [2023-11-29 03:42:49,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457094333] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:49,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:42:49,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2023-11-29 03:42:49,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870734629] [2023-11-29 03:42:49,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:49,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:42:49,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:49,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:42:49,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:42:49,809 INFO L87 Difference]: Start difference. First operand 640 states and 831 transitions. Second operand has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 11 states have internal predecessors, (58), 8 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 03:42:50,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:50,297 INFO L93 Difference]: Finished difference Result 1227 states and 1611 transitions. [2023-11-29 03:42:50,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:42:50,297 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 11 states have internal predecessors, (58), 8 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 127 [2023-11-29 03:42:50,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:50,301 INFO L225 Difference]: With dead ends: 1227 [2023-11-29 03:42:50,301 INFO L226 Difference]: Without dead ends: 682 [2023-11-29 03:42:50,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 228 SyntacticMatches, 12 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:42:50,303 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 77 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:50,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 433 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:42:50,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-29 03:42:50,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 646. [2023-11-29 03:42:50,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 500 states have (on average 1.178) internal successors, (589), 505 states have internal predecessors, (589), 91 states have call successors, (91), 38 states have call predecessors, (91), 47 states have return successors, (149), 102 states have call predecessors, (149), 91 states have call successors, (149) [2023-11-29 03:42:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 829 transitions. [2023-11-29 03:42:50,343 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 829 transitions. Word has length 127 [2023-11-29 03:42:50,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:50,343 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 829 transitions. [2023-11-29 03:42:50,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.142857142857143) internal successors, (58), 11 states have internal predecessors, (58), 8 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 03:42:50,343 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 829 transitions. [2023-11-29 03:42:50,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 03:42:50,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:50,344 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:50,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 03:42:50,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 03:42:50,545 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:50,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:50,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1781358063, now seen corresponding path program 1 times [2023-11-29 03:42:50,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:50,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156868096] [2023-11-29 03:42:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:50,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:50,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:50,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912985462] [2023-11-29 03:42:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:50,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:50,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:50,555 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:50,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 03:42:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:50,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:42:50,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-11-29 03:42:50,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-11-29 03:42:50,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:50,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156868096] [2023-11-29 03:42:50,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:50,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912985462] [2023-11-29 03:42:50,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912985462] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:50,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:42:50,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 03:42:50,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887663318] [2023-11-29 03:42:50,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:50,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:42:50,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:50,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:42:50,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:42:50,991 INFO L87 Difference]: Start difference. First operand 646 states and 829 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-29 03:42:51,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:51,374 INFO L93 Difference]: Finished difference Result 653 states and 829 transitions. [2023-11-29 03:42:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:42:51,375 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 123 [2023-11-29 03:42:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:51,378 INFO L225 Difference]: With dead ends: 653 [2023-11-29 03:42:51,378 INFO L226 Difference]: Without dead ends: 652 [2023-11-29 03:42:51,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:42:51,379 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 114 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:51,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 419 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:42:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-11-29 03:42:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 646. [2023-11-29 03:42:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 500 states have (on average 1.172) internal successors, (586), 505 states have internal predecessors, (586), 91 states have call successors, (91), 38 states have call predecessors, (91), 47 states have return successors, (149), 102 states have call predecessors, (149), 91 states have call successors, (149) [2023-11-29 03:42:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 826 transitions. [2023-11-29 03:42:51,427 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 826 transitions. Word has length 123 [2023-11-29 03:42:51,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:51,428 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 826 transitions. [2023-11-29 03:42:51,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-29 03:42:51,428 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 826 transitions. [2023-11-29 03:42:51,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 03:42:51,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:51,429 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 7, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:51,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 03:42:51,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-29 03:42:51,630 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:51,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1883098410, now seen corresponding path program 2 times [2023-11-29 03:42:51,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:51,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308663549] [2023-11-29 03:42:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:51,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:51,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:51,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99505511] [2023-11-29 03:42:51,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:42:51,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:51,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:51,640 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:51,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 03:42:51,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:42:51,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:42:51,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:42:51,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 146 proven. 7 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-29 03:42:51,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 62 proven. 21 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-29 03:42:52,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308663549] [2023-11-29 03:42:52,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99505511] [2023-11-29 03:42:52,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99505511] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:52,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:42:52,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2023-11-29 03:42:52,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656281346] [2023-11-29 03:42:52,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:52,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:42:52,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:42:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:42:52,040 INFO L87 Difference]: Start difference. First operand 646 states and 826 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 03:42:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:52,377 INFO L93 Difference]: Finished difference Result 1122 states and 1463 transitions. [2023-11-29 03:42:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:42:52,377 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 127 [2023-11-29 03:42:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:52,381 INFO L225 Difference]: With dead ends: 1122 [2023-11-29 03:42:52,381 INFO L226 Difference]: Without dead ends: 642 [2023-11-29 03:42:52,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 236 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:42:52,383 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 63 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:52,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 345 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:42:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-11-29 03:42:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 635. [2023-11-29 03:42:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 491 states have (on average 1.1710794297352343) internal successors, (575), 496 states have internal predecessors, (575), 90 states have call successors, (90), 38 states have call predecessors, (90), 46 states have return successors, (146), 100 states have call predecessors, (146), 90 states have call successors, (146) [2023-11-29 03:42:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 811 transitions. [2023-11-29 03:42:52,420 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 811 transitions. Word has length 127 [2023-11-29 03:42:52,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:52,421 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 811 transitions. [2023-11-29 03:42:52,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 03:42:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 811 transitions. [2023-11-29 03:42:52,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 03:42:52,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:52,422 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:52,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 03:42:52,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:52,623 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:52,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:52,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1871220755, now seen corresponding path program 3 times [2023-11-29 03:42:52,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:52,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255535562] [2023-11-29 03:42:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:52,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:52,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:52,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262812989] [2023-11-29 03:42:52,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:42:52,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:52,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:52,631 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:52,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 03:42:52,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 03:42:52,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:42:52,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:42:52,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-29 03:42:52,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:42:52,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:52,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255535562] [2023-11-29 03:42:52,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:52,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262812989] [2023-11-29 03:42:52,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262812989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:52,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:52,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:42:52,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335447575] [2023-11-29 03:42:52,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:52,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:42:52,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:52,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:42:52,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:42:52,739 INFO L87 Difference]: Start difference. First operand 635 states and 811 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:42:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:52,932 INFO L93 Difference]: Finished difference Result 653 states and 832 transitions. [2023-11-29 03:42:52,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:42:52,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2023-11-29 03:42:52,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:52,936 INFO L225 Difference]: With dead ends: 653 [2023-11-29 03:42:52,936 INFO L226 Difference]: Without dead ends: 652 [2023-11-29 03:42:52,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:42:52,936 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:52,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 182 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:42:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-11-29 03:42:52,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 644. [2023-11-29 03:42:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 500 states have (on average 1.166) internal successors, (583), 502 states have internal predecessors, (583), 90 states have call successors, (90), 38 states have call predecessors, (90), 46 states have return successors, (146), 103 states have call predecessors, (146), 90 states have call successors, (146) [2023-11-29 03:42:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 819 transitions. [2023-11-29 03:42:52,966 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 819 transitions. Word has length 131 [2023-11-29 03:42:52,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:52,966 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 819 transitions. [2023-11-29 03:42:52,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:42:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 819 transitions. [2023-11-29 03:42:52,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 03:42:52,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:52,967 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:52,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 03:42:53,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:53,168 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:53,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:53,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1982187820, now seen corresponding path program 1 times [2023-11-29 03:42:53,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:53,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257384299] [2023-11-29 03:42:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:53,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:53,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:53,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114049314] [2023-11-29 03:42:53,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:53,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:53,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:53,178 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:53,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 03:42:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:53,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:42:53,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-11-29 03:42:53,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:42:53,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:53,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257384299] [2023-11-29 03:42:53,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:53,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114049314] [2023-11-29 03:42:53,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114049314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:53,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:53,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 03:42:53,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670998819] [2023-11-29 03:42:53,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:53,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:42:53,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:53,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:42:53,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:42:53,461 INFO L87 Difference]: Start difference. First operand 644 states and 819 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 03:42:53,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:53,912 INFO L93 Difference]: Finished difference Result 1108 states and 1433 transitions. [2023-11-29 03:42:53,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:42:53,912 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 133 [2023-11-29 03:42:53,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:53,916 INFO L225 Difference]: With dead ends: 1108 [2023-11-29 03:42:53,917 INFO L226 Difference]: Without dead ends: 639 [2023-11-29 03:42:53,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:42:53,918 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 51 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:53,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 351 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:42:53,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-11-29 03:42:53,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 633. [2023-11-29 03:42:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 491 states have (on average 1.1690427698574337) internal successors, (574), 494 states have internal predecessors, (574), 88 states have call successors, (88), 38 states have call predecessors, (88), 46 states have return successors, (139), 100 states have call predecessors, (139), 88 states have call successors, (139) [2023-11-29 03:42:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 801 transitions. [2023-11-29 03:42:53,948 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 801 transitions. Word has length 133 [2023-11-29 03:42:53,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:53,949 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 801 transitions. [2023-11-29 03:42:53,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 03:42:53,949 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 801 transitions. [2023-11-29 03:42:53,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 03:42:53,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:53,950 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:53,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-29 03:42:54,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-29 03:42:54,150 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:54,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:54,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1306948566, now seen corresponding path program 1 times [2023-11-29 03:42:54,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:54,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128299258] [2023-11-29 03:42:54,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:54,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:54,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:54,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322737462] [2023-11-29 03:42:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:54,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:54,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:54,160 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:54,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 03:42:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:54,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:42:54,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-29 03:42:54,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 96 proven. 27 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-11-29 03:42:54,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:54,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128299258] [2023-11-29 03:42:54,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:54,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322737462] [2023-11-29 03:42:54,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322737462] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:54,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:42:54,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2023-11-29 03:42:54,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410036743] [2023-11-29 03:42:54,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:54,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:42:54,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:54,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:42:54,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:42:54,759 INFO L87 Difference]: Start difference. First operand 633 states and 801 transitions. Second operand has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 8 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-29 03:42:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:55,318 INFO L93 Difference]: Finished difference Result 1180 states and 1523 transitions. [2023-11-29 03:42:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:42:55,319 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 8 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) Word has length 138 [2023-11-29 03:42:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:55,323 INFO L225 Difference]: With dead ends: 1180 [2023-11-29 03:42:55,323 INFO L226 Difference]: Without dead ends: 620 [2023-11-29 03:42:55,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 254 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:42:55,326 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 70 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:55,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 434 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:42:55,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-11-29 03:42:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 603. [2023-11-29 03:42:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 466 states have (on average 1.167381974248927) internal successors, (544), 472 states have internal predecessors, (544), 84 states have call successors, (84), 38 states have call predecessors, (84), 45 states have return successors, (126), 92 states have call predecessors, (126), 84 states have call successors, (126) [2023-11-29 03:42:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 754 transitions. [2023-11-29 03:42:55,355 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 754 transitions. Word has length 138 [2023-11-29 03:42:55,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:55,356 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 754 transitions. [2023-11-29 03:42:55,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 8 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-29 03:42:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 754 transitions. [2023-11-29 03:42:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 03:42:55,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:55,357 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:55,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 03:42:55,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 03:42:55,558 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:55,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1621859244, now seen corresponding path program 2 times [2023-11-29 03:42:55,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:55,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294523920] [2023-11-29 03:42:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:55,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:55,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:55,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929755686] [2023-11-29 03:42:55,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:42:55,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:55,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:55,566 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:55,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 03:42:55,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:42:55,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:42:55,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:42:55,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-29 03:42:55,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:42:55,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:55,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294523920] [2023-11-29 03:42:55,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:55,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929755686] [2023-11-29 03:42:55,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929755686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:55,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:55,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:42:55,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831348918] [2023-11-29 03:42:55,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:55,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:42:55,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:55,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:42:55,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:42:55,991 INFO L87 Difference]: Start difference. First operand 603 states and 754 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 03:42:56,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:56,115 INFO L93 Difference]: Finished difference Result 603 states and 754 transitions. [2023-11-29 03:42:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:42:56,115 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 143 [2023-11-29 03:42:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:56,119 INFO L225 Difference]: With dead ends: 603 [2023-11-29 03:42:56,119 INFO L226 Difference]: Without dead ends: 602 [2023-11-29 03:42:56,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:42:56,120 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:56,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 154 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:42:56,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2023-11-29 03:42:56,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 591. [2023-11-29 03:42:56,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 457 states have (on average 1.1444201312910285) internal successors, (523), 463 states have internal predecessors, (523), 82 states have call successors, (82), 38 states have call predecessors, (82), 45 states have return successors, (121), 89 states have call predecessors, (121), 82 states have call successors, (121) [2023-11-29 03:42:56,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 726 transitions. [2023-11-29 03:42:56,163 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 726 transitions. Word has length 143 [2023-11-29 03:42:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:56,163 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 726 transitions. [2023-11-29 03:42:56,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 03:42:56,163 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 726 transitions. [2023-11-29 03:42:56,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-29 03:42:56,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:56,164 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 9, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:56,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 03:42:56,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-29 03:42:56,365 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:56,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:56,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1730621545, now seen corresponding path program 3 times [2023-11-29 03:42:56,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:56,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237865068] [2023-11-29 03:42:56,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:56,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:56,372 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:56,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694289892] [2023-11-29 03:42:56,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:42:56,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:56,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:56,373 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:56,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 03:42:56,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 03:42:56,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:42:56,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:42:56,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-29 03:42:56,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-29 03:42:58,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237865068] [2023-11-29 03:42:58,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694289892] [2023-11-29 03:42:58,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694289892] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:58,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:42:58,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 03:42:58,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582311684] [2023-11-29 03:42:58,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:58,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:42:58,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:42:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:42:58,039 INFO L87 Difference]: Start difference. First operand 591 states and 726 transitions. Second operand has 16 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 3 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 03:42:59,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:59,568 INFO L93 Difference]: Finished difference Result 676 states and 866 transitions. [2023-11-29 03:42:59,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:42:59,569 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 3 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 146 [2023-11-29 03:42:59,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:59,572 INFO L225 Difference]: With dead ends: 676 [2023-11-29 03:42:59,572 INFO L226 Difference]: Without dead ends: 675 [2023-11-29 03:42:59,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:42:59,573 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 34 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:59,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 344 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 03:42:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-11-29 03:42:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 630. [2023-11-29 03:42:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 490 states have (on average 1.1346938775510205) internal successors, (556), 493 states have internal predecessors, (556), 82 states have call successors, (82), 38 states have call predecessors, (82), 51 states have return successors, (139), 98 states have call predecessors, (139), 82 states have call successors, (139) [2023-11-29 03:42:59,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 777 transitions. [2023-11-29 03:42:59,626 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 777 transitions. Word has length 146 [2023-11-29 03:42:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:59,626 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 777 transitions. [2023-11-29 03:42:59,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 3 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 03:42:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 777 transitions. [2023-11-29 03:42:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-29 03:42:59,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:59,627 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 9, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:42:59,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 03:42:59,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 03:42:59,828 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:42:59,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:59,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1853172683, now seen corresponding path program 1 times [2023-11-29 03:42:59,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:59,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004151684] [2023-11-29 03:42:59,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:59,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:59,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:59,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796458299] [2023-11-29 03:42:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:59,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:59,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:59,840 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:59,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 03:42:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:59,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:42:59,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-29 03:43:00,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 139 proven. 3 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-11-29 03:43:00,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:00,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004151684] [2023-11-29 03:43:00,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:00,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796458299] [2023-11-29 03:43:00,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796458299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:00,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:43:00,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2023-11-29 03:43:00,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243284333] [2023-11-29 03:43:00,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:00,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 03:43:00,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:00,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:43:00,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:43:00,984 INFO L87 Difference]: Start difference. First operand 630 states and 777 transitions. Second operand has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 21 states have internal predecessors, (87), 11 states have call successors, (18), 1 states have call predecessors, (18), 4 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-29 03:43:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:01,616 INFO L93 Difference]: Finished difference Result 1238 states and 1540 transitions. [2023-11-29 03:43:01,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 03:43:01,616 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 21 states have internal predecessors, (87), 11 states have call successors, (18), 1 states have call predecessors, (18), 4 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) Word has length 153 [2023-11-29 03:43:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:01,619 INFO L225 Difference]: With dead ends: 1238 [2023-11-29 03:43:01,619 INFO L226 Difference]: Without dead ends: 688 [2023-11-29 03:43:01,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 282 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:43:01,621 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 80 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:01,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 201 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:43:01,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-11-29 03:43:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 633. [2023-11-29 03:43:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 493 states have (on average 1.1257606490872212) internal successors, (555), 495 states have internal predecessors, (555), 82 states have call successors, (82), 38 states have call predecessors, (82), 51 states have return successors, (134), 99 states have call predecessors, (134), 82 states have call successors, (134) [2023-11-29 03:43:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 771 transitions. [2023-11-29 03:43:01,667 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 771 transitions. Word has length 153 [2023-11-29 03:43:01,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:01,667 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 771 transitions. [2023-11-29 03:43:01,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 21 states have internal predecessors, (87), 11 states have call successors, (18), 1 states have call predecessors, (18), 4 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-29 03:43:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 771 transitions. [2023-11-29 03:43:01,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 03:43:01,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:01,669 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 9, 8, 8, 8, 8, 8, 8, 8, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:01,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 03:43:01,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 03:43:01,870 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:01,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:01,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2141943171, now seen corresponding path program 4 times [2023-11-29 03:43:01,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:01,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612773582] [2023-11-29 03:43:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:01,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:01,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:01,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765220517] [2023-11-29 03:43:01,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:43:01,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:01,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:01,880 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:01,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 03:43:01,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:43:01,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:01,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 03:43:01,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 257 proven. 133 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-29 03:43:02,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 257 proven. 140 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2023-11-29 03:43:02,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:02,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612773582] [2023-11-29 03:43:02,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:02,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765220517] [2023-11-29 03:43:02,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765220517] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:02,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:43:02,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 21 [2023-11-29 03:43:02,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079832201] [2023-11-29 03:43:02,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:02,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 03:43:02,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:02,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:43:02,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:43:02,974 INFO L87 Difference]: Start difference. First operand 633 states and 771 transitions. Second operand has 21 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-29 03:43:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:03,863 INFO L93 Difference]: Finished difference Result 1344 states and 1697 transitions. [2023-11-29 03:43:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 03:43:03,864 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 12 states have call successors, (18) Word has length 171 [2023-11-29 03:43:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:03,867 INFO L225 Difference]: With dead ends: 1344 [2023-11-29 03:43:03,867 INFO L226 Difference]: Without dead ends: 814 [2023-11-29 03:43:03,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 315 SyntacticMatches, 11 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=976, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 03:43:03,870 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 179 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:03,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 379 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:43:03,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2023-11-29 03:43:03,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 707. [2023-11-29 03:43:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 549 states have (on average 1.1202185792349726) internal successors, (615), 550 states have internal predecessors, (615), 95 states have call successors, (95), 42 states have call predecessors, (95), 56 states have return successors, (168), 114 states have call predecessors, (168), 95 states have call successors, (168) [2023-11-29 03:43:03,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 878 transitions. [2023-11-29 03:43:03,905 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 878 transitions. Word has length 171 [2023-11-29 03:43:03,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:03,905 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 878 transitions. [2023-11-29 03:43:03,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-29 03:43:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 878 transitions. [2023-11-29 03:43:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 03:43:03,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:03,906 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:03,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-29 03:43:04,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 03:43:04,107 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:04,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:04,107 INFO L85 PathProgramCache]: Analyzing trace with hash -427696355, now seen corresponding path program 2 times [2023-11-29 03:43:04,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:04,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542628534] [2023-11-29 03:43:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:04,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:04,118 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:04,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2981599] [2023-11-29 03:43:04,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:43:04,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:04,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:04,119 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:04,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 03:43:04,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:43:04,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:04,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:43:04,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-29 03:43:04,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-29 03:43:04,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:04,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542628534] [2023-11-29 03:43:04,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:04,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2981599] [2023-11-29 03:43:04,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2981599] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:04,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:43:04,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 03:43:04,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027327160] [2023-11-29 03:43:04,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:04,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:43:04,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:04,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:43:04,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:43:04,463 INFO L87 Difference]: Start difference. First operand 707 states and 878 transitions. Second operand has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 03:43:04,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:04,668 INFO L93 Difference]: Finished difference Result 858 states and 1089 transitions. [2023-11-29 03:43:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:43:04,668 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 163 [2023-11-29 03:43:04,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:04,673 INFO L225 Difference]: With dead ends: 858 [2023-11-29 03:43:04,673 INFO L226 Difference]: Without dead ends: 857 [2023-11-29 03:43:04,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:43:04,674 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 41 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:04,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 223 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:43:04,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2023-11-29 03:43:04,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 840. [2023-11-29 03:43:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 659 states have (on average 1.127465857359636) internal successors, (743), 663 states have internal predecessors, (743), 118 states have call successors, (118), 42 states have call predecessors, (118), 56 states have return successors, (191), 134 states have call predecessors, (191), 118 states have call successors, (191) [2023-11-29 03:43:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1052 transitions. [2023-11-29 03:43:04,723 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1052 transitions. Word has length 163 [2023-11-29 03:43:04,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:04,724 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1052 transitions. [2023-11-29 03:43:04,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 03:43:04,724 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1052 transitions. [2023-11-29 03:43:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-29 03:43:04,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:04,725 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 10, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:04,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-11-29 03:43:04,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-29 03:43:04,925 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:04,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:04,926 INFO L85 PathProgramCache]: Analyzing trace with hash 915323951, now seen corresponding path program 3 times [2023-11-29 03:43:04,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:04,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18825814] [2023-11-29 03:43:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:04,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:04,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:04,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978816459] [2023-11-29 03:43:04,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:43:04,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:04,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:04,935 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:04,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 03:43:04,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 03:43:04,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:04,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:43:04,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2023-11-29 03:43:05,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2023-11-29 03:43:05,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:05,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18825814] [2023-11-29 03:43:05,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:05,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978816459] [2023-11-29 03:43:05,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978816459] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:05,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:43:05,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 03:43:05,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483356998] [2023-11-29 03:43:05,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:05,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:43:05,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:05,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:43:05,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:43:05,299 INFO L87 Difference]: Start difference. First operand 840 states and 1052 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 03:43:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:05,884 INFO L93 Difference]: Finished difference Result 945 states and 1190 transitions. [2023-11-29 03:43:05,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 03:43:05,884 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 173 [2023-11-29 03:43:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:05,896 INFO L225 Difference]: With dead ends: 945 [2023-11-29 03:43:05,897 INFO L226 Difference]: Without dead ends: 944 [2023-11-29 03:43:05,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:43:05,898 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 111 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:05,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 393 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:43:05,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-11-29 03:43:05,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 937. [2023-11-29 03:43:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 735 states have (on average 1.1306122448979592) internal successors, (831), 737 states have internal predecessors, (831), 129 states have call successors, (129), 47 states have call predecessors, (129), 66 states have return successors, (227), 152 states have call predecessors, (227), 129 states have call successors, (227) [2023-11-29 03:43:05,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1187 transitions. [2023-11-29 03:43:05,968 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1187 transitions. Word has length 173 [2023-11-29 03:43:05,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:05,968 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1187 transitions. [2023-11-29 03:43:05,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 03:43:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1187 transitions. [2023-11-29 03:43:05,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-29 03:43:05,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:05,970 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:05,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-29 03:43:06,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:06,171 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:06,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:06,171 INFO L85 PathProgramCache]: Analyzing trace with hash -349005455, now seen corresponding path program 2 times [2023-11-29 03:43:06,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:06,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239563906] [2023-11-29 03:43:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:06,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:06,178 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:06,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504127555] [2023-11-29 03:43:06,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:43:06,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:06,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:06,180 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:06,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 03:43:06,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:43:06,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:06,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:43:06,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-11-29 03:43:06,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-11-29 03:43:06,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:06,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239563906] [2023-11-29 03:43:06,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:06,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504127555] [2023-11-29 03:43:06,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504127555] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:06,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:43:06,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-11-29 03:43:06,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818414691] [2023-11-29 03:43:06,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:06,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:43:06,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:06,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:43:06,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:43:06,671 INFO L87 Difference]: Start difference. First operand 937 states and 1187 transitions. Second operand has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-29 03:43:07,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:07,244 INFO L93 Difference]: Finished difference Result 942 states and 1187 transitions. [2023-11-29 03:43:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:43:07,245 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 176 [2023-11-29 03:43:07,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:07,250 INFO L225 Difference]: With dead ends: 942 [2023-11-29 03:43:07,250 INFO L226 Difference]: Without dead ends: 941 [2023-11-29 03:43:07,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2023-11-29 03:43:07,251 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 96 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:07,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 498 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:43:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-11-29 03:43:07,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 937. [2023-11-29 03:43:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 735 states have (on average 1.1197278911564625) internal successors, (823), 737 states have internal predecessors, (823), 129 states have call successors, (129), 47 states have call predecessors, (129), 66 states have return successors, (227), 152 states have call predecessors, (227), 129 states have call successors, (227) [2023-11-29 03:43:07,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1179 transitions. [2023-11-29 03:43:07,313 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1179 transitions. Word has length 176 [2023-11-29 03:43:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:07,314 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1179 transitions. [2023-11-29 03:43:07,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-29 03:43:07,314 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1179 transitions. [2023-11-29 03:43:07,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-29 03:43:07,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:07,315 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 10, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:07,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-29 03:43:07,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:07,516 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:07,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:07,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1158141395, now seen corresponding path program 4 times [2023-11-29 03:43:07,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:07,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766757944] [2023-11-29 03:43:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:07,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:07,524 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:07,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372142870] [2023-11-29 03:43:07,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:43:07,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:07,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:07,525 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:07,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 03:43:07,585 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:43:07,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:07,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:43:07,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 220 proven. 31 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-11-29 03:43:07,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 220 proven. 32 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-11-29 03:43:08,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766757944] [2023-11-29 03:43:08,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372142870] [2023-11-29 03:43:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372142870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:08,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:43:08,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2023-11-29 03:43:08,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599825543] [2023-11-29 03:43:08,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:08,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:43:08,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:08,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:43:08,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:43:08,387 INFO L87 Difference]: Start difference. First operand 937 states and 1179 transitions. Second operand has 17 states, 13 states have (on average 6.461538461538462) internal successors, (84), 16 states have internal predecessors, (84), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-29 03:43:09,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:09,206 INFO L93 Difference]: Finished difference Result 1508 states and 1907 transitions. [2023-11-29 03:43:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:43:09,207 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 6.461538461538462) internal successors, (84), 16 states have internal predecessors, (84), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 173 [2023-11-29 03:43:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:09,211 INFO L225 Difference]: With dead ends: 1508 [2023-11-29 03:43:09,211 INFO L226 Difference]: Without dead ends: 888 [2023-11-29 03:43:09,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 325 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:43:09,213 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 86 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:09,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 684 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:43:09,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-11-29 03:43:09,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 865. [2023-11-29 03:43:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 680 states have (on average 1.1147058823529412) internal successors, (758), 682 states have internal predecessors, (758), 116 states have call successors, (116), 43 states have call predecessors, (116), 62 states have return successors, (208), 139 states have call predecessors, (208), 116 states have call successors, (208) [2023-11-29 03:43:09,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1082 transitions. [2023-11-29 03:43:09,258 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1082 transitions. Word has length 173 [2023-11-29 03:43:09,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:09,259 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1082 transitions. [2023-11-29 03:43:09,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 6.461538461538462) internal successors, (84), 16 states have internal predecessors, (84), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-29 03:43:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1082 transitions. [2023-11-29 03:43:09,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 03:43:09,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:09,260 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:09,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-29 03:43:09,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-11-29 03:43:09,461 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:09,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:09,461 INFO L85 PathProgramCache]: Analyzing trace with hash -742533454, now seen corresponding path program 1 times [2023-11-29 03:43:09,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:09,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321448315] [2023-11-29 03:43:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:09,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:09,470 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:09,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054411803] [2023-11-29 03:43:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:09,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:09,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:09,472 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:09,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-29 03:43:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:09,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:43:09,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2023-11-29 03:43:09,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:43:09,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:09,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321448315] [2023-11-29 03:43:09,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:09,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054411803] [2023-11-29 03:43:09,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054411803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:09,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:43:09,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:43:09,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923761455] [2023-11-29 03:43:09,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:09,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:43:09,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:09,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:43:09,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:43:09,614 INFO L87 Difference]: Start difference. First operand 865 states and 1082 transitions. Second operand has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:43:09,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:09,713 INFO L93 Difference]: Finished difference Result 917 states and 1139 transitions. [2023-11-29 03:43:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:43:09,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 194 [2023-11-29 03:43:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:09,718 INFO L225 Difference]: With dead ends: 917 [2023-11-29 03:43:09,718 INFO L226 Difference]: Without dead ends: 913 [2023-11-29 03:43:09,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:43:09,718 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 9 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:09,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 171 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:43:09,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2023-11-29 03:43:09,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 865. [2023-11-29 03:43:09,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 680 states have (on average 1.1147058823529412) internal successors, (758), 682 states have internal predecessors, (758), 116 states have call successors, (116), 43 states have call predecessors, (116), 62 states have return successors, (206), 139 states have call predecessors, (206), 116 states have call successors, (206) [2023-11-29 03:43:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1080 transitions. [2023-11-29 03:43:09,763 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1080 transitions. Word has length 194 [2023-11-29 03:43:09,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:09,763 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1080 transitions. [2023-11-29 03:43:09,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 03:43:09,763 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1080 transitions. [2023-11-29 03:43:09,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-29 03:43:09,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:09,765 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 12, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:09,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-29 03:43:09,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-11-29 03:43:09,965 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:09,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:09,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1437974054, now seen corresponding path program 2 times [2023-11-29 03:43:09,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:09,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192565957] [2023-11-29 03:43:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:09,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:09,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:09,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295933649] [2023-11-29 03:43:09,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:43:09,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:09,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:09,977 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:09,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-29 03:43:10,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:43:10,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:10,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:43:10,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 125 proven. 21 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2023-11-29 03:43:10,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 125 proven. 21 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2023-11-29 03:43:10,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:10,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192565957] [2023-11-29 03:43:10,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:10,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295933649] [2023-11-29 03:43:10,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295933649] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:10,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:43:10,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2023-11-29 03:43:10,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275478232] [2023-11-29 03:43:10,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:10,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:43:10,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:10,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:43:10,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:43:10,736 INFO L87 Difference]: Start difference. First operand 865 states and 1080 transitions. Second operand has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 16 states have internal predecessors, (76), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 03:43:11,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:11,671 INFO L93 Difference]: Finished difference Result 1489 states and 1879 transitions. [2023-11-29 03:43:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:43:11,672 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 16 states have internal predecessors, (76), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 204 [2023-11-29 03:43:11,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:11,677 INFO L225 Difference]: With dead ends: 1489 [2023-11-29 03:43:11,678 INFO L226 Difference]: Without dead ends: 870 [2023-11-29 03:43:11,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 387 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:43:11,681 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 86 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:11,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 380 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:43:11,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2023-11-29 03:43:11,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 859. [2023-11-29 03:43:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 674 states have (on average 1.1157270029673592) internal successors, (752), 678 states have internal predecessors, (752), 114 states have call successors, (114), 45 states have call predecessors, (114), 64 states have return successors, (192), 135 states have call predecessors, (192), 114 states have call successors, (192) [2023-11-29 03:43:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1058 transitions. [2023-11-29 03:43:11,741 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1058 transitions. Word has length 204 [2023-11-29 03:43:11,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:11,742 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1058 transitions. [2023-11-29 03:43:11,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 16 states have internal predecessors, (76), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 03:43:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1058 transitions. [2023-11-29 03:43:11,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 03:43:11,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:11,743 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 10, 10, 10, 10, 10, 10, 10, 10, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:11,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-29 03:43:11,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-11-29 03:43:11,944 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:11,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash 839032955, now seen corresponding path program 5 times [2023-11-29 03:43:11,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:11,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966113102] [2023-11-29 03:43:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:11,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:11,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:11,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430850431] [2023-11-29 03:43:11,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:43:11,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:11,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:11,954 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:11,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-29 03:43:12,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-11-29 03:43:12,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:12,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 03:43:12,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 343 proven. 124 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-11-29 03:43:12,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 343 proven. 130 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2023-11-29 03:43:13,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:13,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966113102] [2023-11-29 03:43:13,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:13,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430850431] [2023-11-29 03:43:13,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430850431] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:13,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:43:13,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 26 [2023-11-29 03:43:13,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562027897] [2023-11-29 03:43:13,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:13,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 03:43:13,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:13,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 03:43:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:43:13,550 INFO L87 Difference]: Start difference. First operand 859 states and 1058 transitions. Second operand has 26 states, 25 states have (on average 3.88) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-29 03:43:15,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:15,376 INFO L93 Difference]: Finished difference Result 2291 states and 3064 transitions. [2023-11-29 03:43:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 03:43:15,377 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.88) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) Word has length 210 [2023-11-29 03:43:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:15,386 INFO L225 Difference]: With dead ends: 2291 [2023-11-29 03:43:15,387 INFO L226 Difference]: Without dead ends: 1543 [2023-11-29 03:43:15,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 384 SyntacticMatches, 16 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=254, Invalid=1552, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 03:43:15,390 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 214 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:15,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 605 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:43:15,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-11-29 03:43:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1258. [2023-11-29 03:43:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 990 states have (on average 1.1333333333333333) internal successors, (1122), 1002 states have internal predecessors, (1122), 184 states have call successors, (184), 51 states have call predecessors, (184), 77 states have return successors, (316), 204 states have call predecessors, (316), 184 states have call successors, (316) [2023-11-29 03:43:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1622 transitions. [2023-11-29 03:43:15,469 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1622 transitions. Word has length 210 [2023-11-29 03:43:15,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:15,470 INFO L495 AbstractCegarLoop]: Abstraction has 1258 states and 1622 transitions. [2023-11-29 03:43:15,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.88) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-29 03:43:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1622 transitions. [2023-11-29 03:43:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-29 03:43:15,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:15,472 INFO L195 NwaCegarLoop]: trace histogram [22, 19, 11, 11, 11, 11, 11, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:15,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-11-29 03:43:15,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:15,673 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:15,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:15,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1325935924, now seen corresponding path program 4 times [2023-11-29 03:43:15,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:15,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635428364] [2023-11-29 03:43:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:15,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:15,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:15,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038316642] [2023-11-29 03:43:15,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:43:15,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:15,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:15,684 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:15,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-29 03:43:15,775 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:43:15,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:15,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:43:15,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 621 proven. 54 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2023-11-29 03:43:16,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 275 proven. 148 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2023-11-29 03:43:16,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:16,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635428364] [2023-11-29 03:43:16,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:16,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038316642] [2023-11-29 03:43:16,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038316642] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:16,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:43:16,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 16 [2023-11-29 03:43:16,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851031864] [2023-11-29 03:43:16,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:16,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:43:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:16,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:43:16,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:43:16,665 INFO L87 Difference]: Start difference. First operand 1258 states and 1622 transitions. Second operand has 16 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 10 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-29 03:43:17,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:17,573 INFO L93 Difference]: Finished difference Result 3102 states and 4295 transitions. [2023-11-29 03:43:17,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:43:17,574 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 10 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) Word has length 221 [2023-11-29 03:43:17,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:17,584 INFO L225 Difference]: With dead ends: 3102 [2023-11-29 03:43:17,584 INFO L226 Difference]: Without dead ends: 2139 [2023-11-29 03:43:17,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 422 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:43:17,590 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 172 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:17,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 319 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:43:17,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2023-11-29 03:43:17,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 1759. [2023-11-29 03:43:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1385 states have (on average 1.1509025270758122) internal successors, (1594), 1394 states have internal predecessors, (1594), 273 states have call successors, (273), 62 states have call predecessors, (273), 94 states have return successors, (527), 302 states have call predecessors, (527), 273 states have call successors, (527) [2023-11-29 03:43:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2394 transitions. [2023-11-29 03:43:17,729 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2394 transitions. Word has length 221 [2023-11-29 03:43:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:17,729 INFO L495 AbstractCegarLoop]: Abstraction has 1759 states and 2394 transitions. [2023-11-29 03:43:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 6.615384615384615) internal successors, (86), 15 states have internal predecessors, (86), 10 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-29 03:43:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2394 transitions. [2023-11-29 03:43:17,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-11-29 03:43:17,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:17,731 INFO L195 NwaCegarLoop]: trace histogram [23, 20, 12, 11, 11, 11, 11, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:17,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-11-29 03:43:17,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-11-29 03:43:17,932 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:17,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1569601303, now seen corresponding path program 5 times [2023-11-29 03:43:17,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:17,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597839400] [2023-11-29 03:43:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:17,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:17,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:17,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144706787] [2023-11-29 03:43:17,943 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:43:17,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:17,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:17,944 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:17,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 03:43:18,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-29 03:43:18,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:18,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:43:18,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 593 proven. 0 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2023-11-29 03:43:18,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:43:18,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:18,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597839400] [2023-11-29 03:43:18,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:18,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144706787] [2023-11-29 03:43:18,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144706787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:18,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:43:18,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 03:43:18,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881536611] [2023-11-29 03:43:18,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:18,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:43:18,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:18,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:43:18,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:43:18,178 INFO L87 Difference]: Start difference. First operand 1759 states and 2394 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 03:43:18,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:18,599 INFO L93 Difference]: Finished difference Result 2905 states and 4011 transitions. [2023-11-29 03:43:18,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:43:18,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 229 [2023-11-29 03:43:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:18,608 INFO L225 Difference]: With dead ends: 2905 [2023-11-29 03:43:18,609 INFO L226 Difference]: Without dead ends: 1462 [2023-11-29 03:43:18,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:43:18,615 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 41 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:18,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 287 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:43:18,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2023-11-29 03:43:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1457. [2023-11-29 03:43:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1141 states have (on average 1.1437335670464506) internal successors, (1305), 1140 states have internal predecessors, (1305), 223 states have call successors, (223), 60 states have call predecessors, (223), 86 states have return successors, (413), 256 states have call predecessors, (413), 223 states have call successors, (413) [2023-11-29 03:43:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1941 transitions. [2023-11-29 03:43:18,710 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1941 transitions. Word has length 229 [2023-11-29 03:43:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:18,710 INFO L495 AbstractCegarLoop]: Abstraction has 1457 states and 1941 transitions. [2023-11-29 03:43:18,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 03:43:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1941 transitions. [2023-11-29 03:43:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-29 03:43:18,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:18,712 INFO L195 NwaCegarLoop]: trace histogram [26, 24, 14, 14, 14, 14, 13, 13, 13, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:18,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-29 03:43:18,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-29 03:43:18,913 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:18,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:18,913 INFO L85 PathProgramCache]: Analyzing trace with hash -333716010, now seen corresponding path program 6 times [2023-11-29 03:43:18,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:18,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417549025] [2023-11-29 03:43:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:18,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:18,923 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:18,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143599229] [2023-11-29 03:43:18,923 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:43:18,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:18,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:18,924 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:18,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 03:43:19,021 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-11-29 03:43:19,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:19,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:43:19,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 457 proven. 41 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2023-11-29 03:43:29,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:31,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:31,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417549025] [2023-11-29 03:43:31,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:31,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143599229] [2023-11-29 03:43:31,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143599229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:43:31,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:43:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-29 03:43:31,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515278432] [2023-11-29 03:43:31,041 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:31,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:43:31,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:31,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:43:31,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=244, Unknown=6, NotChecked=0, Total=306 [2023-11-29 03:43:31,042 INFO L87 Difference]: Start difference. First operand 1457 states and 1941 transitions. Second operand has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 03:43:32,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:43:34,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:43:36,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:43:38,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:43:40,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:43:42,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:43:44,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:43:46,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:43:47,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:43:49,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:43:50,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:43:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:52,630 INFO L93 Difference]: Finished difference Result 1533 states and 2082 transitions. [2023-11-29 03:43:52,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:43:52,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 259 [2023-11-29 03:43:52,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:52,636 INFO L225 Difference]: With dead ends: 1533 [2023-11-29 03:43:52,637 INFO L226 Difference]: Without dead ends: 1532 [2023-11-29 03:43:52,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=144, Invalid=500, Unknown=6, NotChecked=0, Total=650 [2023-11-29 03:43:52,638 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 47 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:52,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 311 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 10 Unknown, 0 Unchecked, 20.8s Time] [2023-11-29 03:43:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2023-11-29 03:43:52,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1477. [2023-11-29 03:43:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1157 states have (on average 1.1417458945548833) internal successors, (1321), 1156 states have internal predecessors, (1321), 223 states have call successors, (223), 60 states have call predecessors, (223), 90 states have return successors, (425), 260 states have call predecessors, (425), 223 states have call successors, (425) [2023-11-29 03:43:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 1969 transitions. [2023-11-29 03:43:52,736 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 1969 transitions. Word has length 259 [2023-11-29 03:43:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:52,736 INFO L495 AbstractCegarLoop]: Abstraction has 1477 states and 1969 transitions. [2023-11-29 03:43:52,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 03:43:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 1969 transitions. [2023-11-29 03:43:52,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-29 03:43:52,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:52,738 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 14, 14, 14, 14, 14, 14, 14, 13, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:52,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-29 03:43:52,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-11-29 03:43:52,939 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:52,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:52,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1569899391, now seen corresponding path program 7 times [2023-11-29 03:43:52,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:52,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533505126] [2023-11-29 03:43:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:52,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:52,950 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:52,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620983151] [2023-11-29 03:43:52,951 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:43:52,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:52,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:52,952 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:52,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-29 03:43:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:53,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 03:43:53,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 508 proven. 68 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2023-11-29 03:43:53,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 508 proven. 74 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2023-11-29 03:43:54,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:54,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533505126] [2023-11-29 03:43:54,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:54,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620983151] [2023-11-29 03:43:54,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620983151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:54,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:43:54,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 30 [2023-11-29 03:43:54,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829886980] [2023-11-29 03:43:54,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:54,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 03:43:54,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:54,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 03:43:54,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2023-11-29 03:43:54,257 INFO L87 Difference]: Start difference. First operand 1477 states and 1969 transitions. Second operand has 30 states, 30 states have (on average 3.6666666666666665) internal successors, (110), 27 states have internal predecessors, (110), 16 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 03:43:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:55,793 INFO L93 Difference]: Finished difference Result 3183 states and 4295 transitions. [2023-11-29 03:43:55,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 03:43:55,793 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.6666666666666665) internal successors, (110), 27 states have internal predecessors, (110), 16 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) Word has length 264 [2023-11-29 03:43:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:55,801 INFO L225 Difference]: With dead ends: 3183 [2023-11-29 03:43:55,801 INFO L226 Difference]: Without dead ends: 1846 [2023-11-29 03:43:55,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 494 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=322, Invalid=2030, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 03:43:55,808 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 199 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:55,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 487 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:43:55,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2023-11-29 03:43:55,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1791. [2023-11-29 03:43:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1415 states have (on average 1.1406360424028268) internal successors, (1614), 1408 states have internal predecessors, (1614), 263 states have call successors, (263), 72 states have call predecessors, (263), 106 states have return successors, (487), 310 states have call predecessors, (487), 263 states have call successors, (487) [2023-11-29 03:43:55,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2364 transitions. [2023-11-29 03:43:55,931 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2364 transitions. Word has length 264 [2023-11-29 03:43:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:55,932 INFO L495 AbstractCegarLoop]: Abstraction has 1791 states and 2364 transitions. [2023-11-29 03:43:55,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.6666666666666665) internal successors, (110), 27 states have internal predecessors, (110), 16 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 03:43:55,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2364 transitions. [2023-11-29 03:43:55,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-29 03:43:55,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:55,934 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 12, 11, 11, 11, 11, 11, 11, 11, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:55,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-29 03:43:56,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-11-29 03:43:56,134 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:43:56,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:56,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1387575321, now seen corresponding path program 6 times [2023-11-29 03:43:56,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:56,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820553342] [2023-11-29 03:43:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:56,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:56,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:56,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620708912] [2023-11-29 03:43:56,145 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:43:56,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:56,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:56,146 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:56,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-29 03:43:56,273 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-11-29 03:43:56,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:43:56,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 03:43:56,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:44:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 479 proven. 72 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2023-11-29 03:44:12,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:44:37,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:44:37,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820553342] [2023-11-29 03:44:37,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:44:37,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620708912] [2023-11-29 03:44:37,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620708912] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:44:37,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:44:37,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-11-29 03:44:37,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64147159] [2023-11-29 03:44:37,577 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:44:37,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 03:44:37,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:44:37,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 03:44:37,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=759, Unknown=1, NotChecked=0, Total=870 [2023-11-29 03:44:37,578 INFO L87 Difference]: Start difference. First operand 1791 states and 2364 transitions. Second operand has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 22 states have internal predecessors, (78), 7 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 03:44:42,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:44:48,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:45:04,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:45:07,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:45:10,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:45:14,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:45:14,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:14,281 INFO L93 Difference]: Finished difference Result 1904 states and 2526 transitions. [2023-11-29 03:45:14,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 03:45:14,282 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 22 states have internal predecessors, (78), 7 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) Word has length 239 [2023-11-29 03:45:14,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:14,288 INFO L225 Difference]: With dead ends: 1904 [2023-11-29 03:45:14,288 INFO L226 Difference]: Without dead ends: 1852 [2023-11-29 03:45:14,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=244, Invalid=1824, Unknown=2, NotChecked=0, Total=2070 [2023-11-29 03:45:14,290 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 70 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:14,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 448 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 780 Invalid, 3 Unknown, 0 Unchecked, 23.4s Time] [2023-11-29 03:45:14,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2023-11-29 03:45:14,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1795. [2023-11-29 03:45:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1418 states have (on average 1.1403385049365302) internal successors, (1617), 1411 states have internal predecessors, (1617), 263 states have call successors, (263), 73 states have call predecessors, (263), 107 states have return successors, (487), 310 states have call predecessors, (487), 263 states have call successors, (487) [2023-11-29 03:45:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2367 transitions. [2023-11-29 03:45:14,427 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2367 transitions. Word has length 239 [2023-11-29 03:45:14,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:14,427 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 2367 transitions. [2023-11-29 03:45:14,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 22 states have internal predecessors, (78), 7 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 03:45:14,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2367 transitions. [2023-11-29 03:45:14,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 03:45:14,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:14,430 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 14, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:14,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-29 03:45:14,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:14,631 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:45:14,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:14,631 INFO L85 PathProgramCache]: Analyzing trace with hash 893904875, now seen corresponding path program 1 times [2023-11-29 03:45:14,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:14,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960737540] [2023-11-29 03:45:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:14,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:14,641 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:14,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143763638] [2023-11-29 03:45:14,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:14,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:14,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:14,643 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:14,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-29 03:45:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:14,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:45:14,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1251 backedges. 399 proven. 36 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2023-11-29 03:45:15,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1251 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 1176 trivial. 0 not checked. [2023-11-29 03:45:15,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:15,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960737540] [2023-11-29 03:45:15,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:45:15,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143763638] [2023-11-29 03:45:15,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143763638] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:45:15,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:45:15,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2023-11-29 03:45:15,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327006259] [2023-11-29 03:45:15,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:45:15,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:45:15,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:15,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:45:15,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:45:15,434 INFO L87 Difference]: Start difference. First operand 1795 states and 2367 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-29 03:45:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:16,008 INFO L93 Difference]: Finished difference Result 3275 states and 4380 transitions. [2023-11-29 03:45:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:45:16,009 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 238 [2023-11-29 03:45:16,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:16,015 INFO L225 Difference]: With dead ends: 3275 [2023-11-29 03:45:16,015 INFO L226 Difference]: Without dead ends: 1800 [2023-11-29 03:45:16,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 452 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:45:16,022 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 30 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:16,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 457 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:45:16,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2023-11-29 03:45:16,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1795. [2023-11-29 03:45:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1418 states have (on average 1.1396332863187588) internal successors, (1616), 1411 states have internal predecessors, (1616), 263 states have call successors, (263), 73 states have call predecessors, (263), 107 states have return successors, (487), 310 states have call predecessors, (487), 263 states have call successors, (487) [2023-11-29 03:45:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2366 transitions. [2023-11-29 03:45:16,157 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2366 transitions. Word has length 238 [2023-11-29 03:45:16,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:16,157 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 2366 transitions. [2023-11-29 03:45:16,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-29 03:45:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2366 transitions. [2023-11-29 03:45:16,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-11-29 03:45:16,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:16,160 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 17, 17, 17, 17, 15, 15, 15, 14, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:16,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-29 03:45:16,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2023-11-29 03:45:16,361 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:45:16,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:16,361 INFO L85 PathProgramCache]: Analyzing trace with hash -104340321, now seen corresponding path program 8 times [2023-11-29 03:45:16,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:16,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467374873] [2023-11-29 03:45:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:16,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:16,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:16,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328764317] [2023-11-29 03:45:16,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:45:16,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:16,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:16,378 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:16,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-29 03:45:16,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:45:16,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:45:16,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 03:45:16,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2434 backedges. 1233 proven. 69 refuted. 0 times theorem prover too weak. 1132 trivial. 0 not checked. [2023-11-29 03:45:16,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2434 backedges. 565 proven. 234 refuted. 0 times theorem prover too weak. 1635 trivial. 0 not checked. [2023-11-29 03:45:17,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:17,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467374873] [2023-11-29 03:45:17,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:45:17,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328764317] [2023-11-29 03:45:17,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328764317] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:45:17,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:45:17,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 19 [2023-11-29 03:45:17,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961948544] [2023-11-29 03:45:17,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:45:17,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:45:17,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:17,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:45:17,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:45:17,937 INFO L87 Difference]: Start difference. First operand 1795 states and 2366 transitions. Second operand has 19 states, 17 states have (on average 5.588235294117647) internal successors, (95), 19 states have internal predecessors, (95), 12 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-29 03:45:18,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:18,923 INFO L93 Difference]: Finished difference Result 3598 states and 4849 transitions. [2023-11-29 03:45:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:45:18,924 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.588235294117647) internal successors, (95), 19 states have internal predecessors, (95), 12 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) Word has length 303 [2023-11-29 03:45:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:18,931 INFO L225 Difference]: With dead ends: 3598 [2023-11-29 03:45:18,931 INFO L226 Difference]: Without dead ends: 1886 [2023-11-29 03:45:18,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 577 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:45:18,939 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 71 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:18,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 314 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:45:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2023-11-29 03:45:19,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1689. [2023-11-29 03:45:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1341 states have (on average 1.134973900074571) internal successors, (1522), 1333 states have internal predecessors, (1522), 237 states have call successors, (237), 72 states have call predecessors, (237), 104 states have return successors, (438), 283 states have call predecessors, (438), 237 states have call successors, (438) [2023-11-29 03:45:19,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2197 transitions. [2023-11-29 03:45:19,071 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2197 transitions. Word has length 303 [2023-11-29 03:45:19,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:19,072 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 2197 transitions. [2023-11-29 03:45:19,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.588235294117647) internal successors, (95), 19 states have internal predecessors, (95), 12 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-29 03:45:19,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2197 transitions. [2023-11-29 03:45:19,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-11-29 03:45:19,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:19,074 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 16, 16, 16, 16, 16, 16, 16, 15, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:19,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-11-29 03:45:19,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2023-11-29 03:45:19,275 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:45:19,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:19,275 INFO L85 PathProgramCache]: Analyzing trace with hash 949271591, now seen corresponding path program 9 times [2023-11-29 03:45:19,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:19,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748229925] [2023-11-29 03:45:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:19,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:19,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:19,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939997725] [2023-11-29 03:45:19,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:45:19,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:19,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:19,293 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:19,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-29 03:45:19,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 03:45:19,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:45:19,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 03:45:19,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2427 backedges. 692 proven. 122 refuted. 0 times theorem prover too weak. 1613 trivial. 0 not checked. [2023-11-29 03:45:20,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:21,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:21,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748229925] [2023-11-29 03:45:21,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:45:21,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939997725] [2023-11-29 03:45:21,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939997725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:45:21,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:45:21,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2023-11-29 03:45:21,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755387875] [2023-11-29 03:45:21,818 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:45:21,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 03:45:21,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 03:45:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2023-11-29 03:45:21,820 INFO L87 Difference]: Start difference. First operand 1689 states and 2197 transitions. Second operand has 29 states, 27 states have (on average 3.074074074074074) internal successors, (83), 27 states have internal predecessors, (83), 10 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (13), 10 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-29 03:45:23,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:23,740 INFO L93 Difference]: Finished difference Result 2241 states and 3145 transitions. [2023-11-29 03:45:23,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 03:45:23,741 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.074074074074074) internal successors, (83), 27 states have internal predecessors, (83), 10 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (13), 10 states have call predecessors, (13), 8 states have call successors, (13) Word has length 303 [2023-11-29 03:45:23,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:23,746 INFO L225 Difference]: With dead ends: 2241 [2023-11-29 03:45:23,746 INFO L226 Difference]: Without dead ends: 2240 [2023-11-29 03:45:23,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=282, Invalid=1698, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 03:45:23,748 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 126 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:23,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 520 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:45:23,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2023-11-29 03:45:23,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 1881. [2023-11-29 03:45:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1489 states have (on average 1.1376762928139692) internal successors, (1694), 1475 states have internal predecessors, (1694), 268 states have call successors, (268), 82 states have call predecessors, (268), 117 states have return successors, (525), 323 states have call predecessors, (525), 268 states have call successors, (525) [2023-11-29 03:45:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2487 transitions. [2023-11-29 03:45:23,912 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2487 transitions. Word has length 303 [2023-11-29 03:45:23,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:23,912 INFO L495 AbstractCegarLoop]: Abstraction has 1881 states and 2487 transitions. [2023-11-29 03:45:23,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.074074074074074) internal successors, (83), 27 states have internal predecessors, (83), 10 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (13), 10 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-29 03:45:23,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2487 transitions. [2023-11-29 03:45:23,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-11-29 03:45:23,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:23,915 INFO L195 NwaCegarLoop]: trace histogram [32, 29, 19, 19, 19, 19, 17, 17, 17, 16, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:23,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-11-29 03:45:24,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:24,115 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:45:24,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash -430265041, now seen corresponding path program 10 times [2023-11-29 03:45:24,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:24,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816841761] [2023-11-29 03:45:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:24,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:24,126 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:24,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463169368] [2023-11-29 03:45:24,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:45:24,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:24,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:24,127 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:24,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-29 03:45:24,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:45:24,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:45:24,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 03:45:24,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2864 backedges. 1685 proven. 190 refuted. 0 times theorem prover too weak. 989 trivial. 0 not checked. [2023-11-29 03:45:24,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2864 backedges. 818 proven. 561 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2023-11-29 03:45:26,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:26,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816841761] [2023-11-29 03:45:26,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:45:26,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463169368] [2023-11-29 03:45:26,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463169368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:45:26,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:45:26,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 25 [2023-11-29 03:45:26,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106303552] [2023-11-29 03:45:26,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:45:26,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 03:45:26,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:26,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 03:45:26,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:45:26,421 INFO L87 Difference]: Start difference. First operand 1881 states and 2487 transitions. Second operand has 25 states, 21 states have (on average 6.095238095238095) internal successors, (128), 25 states have internal predecessors, (128), 17 states have call successors, (27), 2 states have call predecessors, (27), 10 states have return successors, (28), 12 states have call predecessors, (28), 17 states have call successors, (28) [2023-11-29 03:45:28,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:28,619 INFO L93 Difference]: Finished difference Result 4057 states and 5523 transitions. [2023-11-29 03:45:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:45:28,619 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 6.095238095238095) internal successors, (128), 25 states have internal predecessors, (128), 17 states have call successors, (27), 2 states have call predecessors, (27), 10 states have return successors, (28), 12 states have call predecessors, (28), 17 states have call successors, (28) Word has length 323 [2023-11-29 03:45:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:28,625 INFO L225 Difference]: With dead ends: 4057 [2023-11-29 03:45:28,625 INFO L226 Difference]: Without dead ends: 2344 [2023-11-29 03:45:28,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 618 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=246, Invalid=1236, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 03:45:28,629 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 124 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:28,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 976 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 03:45:28,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2023-11-29 03:45:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 2169. [2023-11-29 03:45:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 1728 states have (on average 1.1458333333333333) internal successors, (1980), 1709 states have internal predecessors, (1980), 304 states have call successors, (304), 83 states have call predecessors, (304), 130 states have return successors, (652), 376 states have call predecessors, (652), 300 states have call successors, (652) [2023-11-29 03:45:28,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 2936 transitions. [2023-11-29 03:45:28,805 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 2936 transitions. Word has length 323 [2023-11-29 03:45:28,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:28,805 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 2936 transitions. [2023-11-29 03:45:28,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 6.095238095238095) internal successors, (128), 25 states have internal predecessors, (128), 17 states have call successors, (27), 2 states have call predecessors, (27), 10 states have return successors, (28), 12 states have call predecessors, (28), 17 states have call successors, (28) [2023-11-29 03:45:28,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 2936 transitions. [2023-11-29 03:45:28,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-11-29 03:45:28,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:28,808 INFO L195 NwaCegarLoop]: trace histogram [33, 30, 20, 20, 20, 20, 18, 18, 18, 17, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:28,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-11-29 03:45:29,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:29,008 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:45:29,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:29,009 INFO L85 PathProgramCache]: Analyzing trace with hash -283708713, now seen corresponding path program 11 times [2023-11-29 03:45:29,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:29,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822325656] [2023-11-29 03:45:29,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:29,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:29,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:29,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029875400] [2023-11-29 03:45:29,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:45:29,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:29,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:29,024 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:29,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-11-29 03:45:29,202 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 03:45:29,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:45:29,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 03:45:29,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3094 backedges. 1085 proven. 409 refuted. 0 times theorem prover too weak. 1600 trivial. 0 not checked. [2023-11-29 03:45:30,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3094 backedges. 1085 proven. 438 refuted. 0 times theorem prover too weak. 1571 trivial. 0 not checked. [2023-11-29 03:45:32,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:32,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822325656] [2023-11-29 03:45:32,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:45:32,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029875400] [2023-11-29 03:45:32,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029875400] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:45:32,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:45:32,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 33] total 50 [2023-11-29 03:45:32,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585276061] [2023-11-29 03:45:32,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:45:32,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 03:45:32,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:32,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 03:45:32,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 03:45:32,803 INFO L87 Difference]: Start difference. First operand 2169 states and 2936 transitions. Second operand has 50 states, 46 states have (on average 3.8260869565217392) internal successors, (176), 43 states have internal predecessors, (176), 27 states have call successors, (34), 9 states have call predecessors, (34), 10 states have return successors, (30), 16 states have call predecessors, (30), 19 states have call successors, (30) [2023-11-29 03:45:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:37,319 INFO L93 Difference]: Finished difference Result 5689 states and 8663 transitions. [2023-11-29 03:45:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 03:45:37,320 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 46 states have (on average 3.8260869565217392) internal successors, (176), 43 states have internal predecessors, (176), 27 states have call successors, (34), 9 states have call predecessors, (34), 10 states have return successors, (30), 16 states have call predecessors, (30), 19 states have call successors, (30) Word has length 333 [2023-11-29 03:45:37,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:37,332 INFO L225 Difference]: With dead ends: 5689 [2023-11-29 03:45:37,332 INFO L226 Difference]: Without dead ends: 3695 [2023-11-29 03:45:37,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 614 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=954, Invalid=5852, Unknown=0, NotChecked=0, Total=6806 [2023-11-29 03:45:37,340 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 371 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:37,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 857 Invalid, 2689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 03:45:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2023-11-29 03:45:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 2780. [2023-11-29 03:45:37,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2211 states have (on average 1.1659882406151063) internal successors, (2578), 2190 states have internal predecessors, (2578), 407 states have call successors, (407), 105 states have call predecessors, (407), 155 states have return successors, (980), 484 states have call predecessors, (980), 401 states have call successors, (980) [2023-11-29 03:45:37,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3965 transitions. [2023-11-29 03:45:37,654 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3965 transitions. Word has length 333 [2023-11-29 03:45:37,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:37,655 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 3965 transitions. [2023-11-29 03:45:37,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 46 states have (on average 3.8260869565217392) internal successors, (176), 43 states have internal predecessors, (176), 27 states have call successors, (34), 9 states have call predecessors, (34), 10 states have return successors, (30), 16 states have call predecessors, (30), 19 states have call successors, (30) [2023-11-29 03:45:37,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3965 transitions. [2023-11-29 03:45:37,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-11-29 03:45:37,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:37,657 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 17, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:37,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-11-29 03:45:37,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:37,858 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:45:37,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:37,858 INFO L85 PathProgramCache]: Analyzing trace with hash -887641705, now seen corresponding path program 2 times [2023-11-29 03:45:37,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:37,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999538777] [2023-11-29 03:45:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:37,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:37,873 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:37,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94796625] [2023-11-29 03:45:37,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:45:37,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:37,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:37,874 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:37,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-11-29 03:45:37,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:45:37,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:45:37,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:45:37,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2267 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2023-11-29 03:45:38,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:45:38,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:38,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999538777] [2023-11-29 03:45:38,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:45:38,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94796625] [2023-11-29 03:45:38,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94796625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:45:38,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:45:38,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:45:38,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570110885] [2023-11-29 03:45:38,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:38,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:45:38,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:38,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:45:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:45:38,027 INFO L87 Difference]: Start difference. First operand 2780 states and 3965 transitions. Second operand has 5 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 03:45:38,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:38,341 INFO L93 Difference]: Finished difference Result 2782 states and 3965 transitions. [2023-11-29 03:45:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:45:38,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 311 [2023-11-29 03:45:38,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:38,356 INFO L225 Difference]: With dead ends: 2782 [2023-11-29 03:45:38,357 INFO L226 Difference]: Without dead ends: 2779 [2023-11-29 03:45:38,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:45:38,360 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 25 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:38,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 212 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:45:38,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2023-11-29 03:45:38,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2777. [2023-11-29 03:45:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2209 states have (on average 1.133997283838841) internal successors, (2505), 2188 states have internal predecessors, (2505), 407 states have call successors, (407), 105 states have call predecessors, (407), 155 states have return successors, (974), 483 states have call predecessors, (974), 401 states have call successors, (974) [2023-11-29 03:45:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 3886 transitions. [2023-11-29 03:45:38,798 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 3886 transitions. Word has length 311 [2023-11-29 03:45:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:38,799 INFO L495 AbstractCegarLoop]: Abstraction has 2777 states and 3886 transitions. [2023-11-29 03:45:38,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 03:45:38,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 3886 transitions. [2023-11-29 03:45:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-11-29 03:45:38,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:38,801 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 18, 14, 14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:38,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2023-11-29 03:45:39,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-11-29 03:45:39,002 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:45:39,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:39,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1015787752, now seen corresponding path program 3 times [2023-11-29 03:45:39,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:39,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546553027] [2023-11-29 03:45:39,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:39,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:39,022 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:39,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156316272] [2023-11-29 03:45:39,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:45:39,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:39,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:39,024 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:39,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-11-29 03:45:39,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 03:45:39,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:45:39,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 03:45:39,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 283 proven. 60 refuted. 0 times theorem prover too weak. 2459 trivial. 0 not checked. [2023-11-29 03:45:39,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:42,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:42,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546553027] [2023-11-29 03:45:42,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:45:42,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156316272] [2023-11-29 03:45:42,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156316272] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:45:42,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:45:42,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-29 03:45:42,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520781903] [2023-11-29 03:45:42,872 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:45:42,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:45:42,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:45:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=449, Unknown=1, NotChecked=0, Total=506 [2023-11-29 03:45:42,874 INFO L87 Difference]: Start difference. First operand 2777 states and 3886 transitions. Second operand has 18 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-29 03:45:44,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:44,551 INFO L93 Difference]: Finished difference Result 5069 states and 7168 transitions. [2023-11-29 03:45:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:45:44,551 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 340 [2023-11-29 03:45:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:44,561 INFO L225 Difference]: With dead ends: 5069 [2023-11-29 03:45:44,561 INFO L226 Difference]: Without dead ends: 2689 [2023-11-29 03:45:44,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=102, Invalid=827, Unknown=1, NotChecked=0, Total=930 [2023-11-29 03:45:44,569 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 48 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:44,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 671 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:45:44,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2023-11-29 03:45:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2674. [2023-11-29 03:45:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2125 states have (on average 1.1308235294117648) internal successors, (2403), 2099 states have internal predecessors, (2403), 388 states have call successors, (388), 105 states have call predecessors, (388), 155 states have return successors, (938), 469 states have call predecessors, (938), 382 states have call successors, (938) [2023-11-29 03:45:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 3729 transitions. [2023-11-29 03:45:44,805 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 3729 transitions. Word has length 340 [2023-11-29 03:45:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:44,806 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 3729 transitions. [2023-11-29 03:45:44,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-29 03:45:44,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 3729 transitions. [2023-11-29 03:45:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-29 03:45:44,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:44,809 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 22, 22, 22, 22, 20, 20, 20, 19, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:44,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2023-11-29 03:45:45,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-11-29 03:45:45,009 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:45:45,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2028818461, now seen corresponding path program 12 times [2023-11-29 03:45:45,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:45,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181859426] [2023-11-29 03:45:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:45,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:45,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:45,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015197238] [2023-11-29 03:45:45,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:45:45,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:45,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:45,025 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:45,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-11-29 03:45:45,229 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-11-29 03:45:45,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:45:45,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:45:45,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3880 backedges. 1963 proven. 21 refuted. 0 times theorem prover too weak. 1896 trivial. 0 not checked. [2023-11-29 03:45:45,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:46,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3880 backedges. 949 proven. 246 refuted. 0 times theorem prover too weak. 2685 trivial. 0 not checked. [2023-11-29 03:45:46,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:46,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181859426] [2023-11-29 03:45:46,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:45:46,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015197238] [2023-11-29 03:45:46,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015197238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:45:46,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:45:46,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 22 [2023-11-29 03:45:46,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646340383] [2023-11-29 03:45:46,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:45:46,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 03:45:46,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:46,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 03:45:46,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:45:46,822 INFO L87 Difference]: Start difference. First operand 2674 states and 3729 transitions. Second operand has 22 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) [2023-11-29 03:45:48,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:48,094 INFO L93 Difference]: Finished difference Result 5137 states and 7366 transitions. [2023-11-29 03:45:48,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 03:45:48,095 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) Word has length 367 [2023-11-29 03:45:48,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:48,105 INFO L225 Difference]: With dead ends: 5137 [2023-11-29 03:45:48,105 INFO L226 Difference]: Without dead ends: 2622 [2023-11-29 03:45:48,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 698 SyntacticMatches, 15 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:45:48,113 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 88 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:48,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 606 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:45:48,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2023-11-29 03:45:48,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2473. [2023-11-29 03:45:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 1966 states have (on average 1.118006103763988) internal successors, (2198), 1935 states have internal predecessors, (2198), 349 states have call successors, (349), 100 states have call predecessors, (349), 152 states have return successors, (838), 437 states have call predecessors, (838), 345 states have call successors, (838) [2023-11-29 03:45:48,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3385 transitions. [2023-11-29 03:45:48,347 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3385 transitions. Word has length 367 [2023-11-29 03:45:48,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:48,348 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 3385 transitions. [2023-11-29 03:45:48,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 states have internal predecessors, (96), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) [2023-11-29 03:45:48,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3385 transitions. [2023-11-29 03:45:48,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-29 03:45:48,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:48,353 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 21, 21, 21, 21, 21, 21, 21, 20, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:48,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2023-11-29 03:45:48,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-11-29 03:45:48,554 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:45:48,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:48,554 INFO L85 PathProgramCache]: Analyzing trace with hash -555103387, now seen corresponding path program 13 times [2023-11-29 03:45:48,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:48,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072351872] [2023-11-29 03:45:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:48,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:48,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:48,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022357690] [2023-11-29 03:45:48,580 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:45:48,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:48,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:48,582 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:48,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-11-29 03:45:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 03:45:48,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:49,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3873 backedges. 982 proven. 82 refuted. 0 times theorem prover too weak. 2809 trivial. 0 not checked. [2023-11-29 03:45:49,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3873 backedges. 982 proven. 97 refuted. 0 times theorem prover too weak. 2794 trivial. 0 not checked. [2023-11-29 03:45:51,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:51,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072351872] [2023-11-29 03:45:51,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:45:51,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022357690] [2023-11-29 03:45:51,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022357690] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:45:51,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:45:51,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24] total 36 [2023-11-29 03:45:51,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190038112] [2023-11-29 03:45:51,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:45:51,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 03:45:51,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:51,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 03:45:51,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1103, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 03:45:51,060 INFO L87 Difference]: Start difference. First operand 2473 states and 3385 transitions. Second operand has 36 states, 36 states have (on average 3.611111111111111) internal successors, (130), 33 states have internal predecessors, (130), 19 states have call successors, (26), 4 states have call predecessors, (26), 5 states have return successors, (24), 16 states have call predecessors, (24), 17 states have call successors, (24) [2023-11-29 03:45:53,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:53,400 INFO L93 Difference]: Finished difference Result 5188 states and 7267 transitions. [2023-11-29 03:45:53,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 03:45:53,401 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.611111111111111) internal successors, (130), 33 states have internal predecessors, (130), 19 states have call successors, (26), 4 states have call predecessors, (26), 5 states have return successors, (24), 16 states have call predecessors, (24), 17 states have call successors, (24) Word has length 367 [2023-11-29 03:45:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:53,410 INFO L225 Difference]: With dead ends: 5188 [2023-11-29 03:45:53,410 INFO L226 Difference]: Without dead ends: 2926 [2023-11-29 03:45:53,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 693 SyntacticMatches, 7 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=476, Invalid=3064, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 03:45:53,418 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 179 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:53,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 583 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 03:45:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2023-11-29 03:45:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2782. [2023-11-29 03:45:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2782 states, 2214 states have (on average 1.1156278229448962) internal successors, (2470), 2178 states have internal predecessors, (2470), 389 states have call successors, (389), 111 states have call predecessors, (389), 173 states have return successors, (943), 492 states have call predecessors, (943), 385 states have call successors, (943) [2023-11-29 03:45:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 3802 transitions. [2023-11-29 03:45:53,690 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 3802 transitions. Word has length 367 [2023-11-29 03:45:53,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:53,691 INFO L495 AbstractCegarLoop]: Abstraction has 2782 states and 3802 transitions. [2023-11-29 03:45:53,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.611111111111111) internal successors, (130), 33 states have internal predecessors, (130), 19 states have call successors, (26), 4 states have call predecessors, (26), 5 states have return successors, (24), 16 states have call predecessors, (24), 17 states have call successors, (24) [2023-11-29 03:45:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 3802 transitions. [2023-11-29 03:45:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-11-29 03:45:53,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:53,695 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 19, 17, 17, 17, 17, 17, 17, 17, 16, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:45:53,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2023-11-29 03:45:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-11-29 03:45:53,895 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:45:53,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -48177063, now seen corresponding path program 7 times [2023-11-29 03:45:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:53,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046874717] [2023-11-29 03:45:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:53,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:53,915 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:53,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930808084] [2023-11-29 03:45:53,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:45:53,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:53,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:53,917 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:53,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-29 03:45:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:54,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:45:54,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3611 backedges. 1272 proven. 3 refuted. 0 times theorem prover too weak. 2336 trivial. 0 not checked. [2023-11-29 03:45:54,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3611 backedges. 396 proven. 40 refuted. 0 times theorem prover too weak. 3175 trivial. 0 not checked. [2023-11-29 03:45:54,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:54,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046874717] [2023-11-29 03:45:54,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:45:54,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930808084] [2023-11-29 03:45:54,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930808084] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:45:54,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:45:54,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2023-11-29 03:45:54,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150730031] [2023-11-29 03:45:54,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:45:54,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:45:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:54,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:45:54,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:45:54,817 INFO L87 Difference]: Start difference. First operand 2782 states and 3802 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 03:45:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:55,418 INFO L93 Difference]: Finished difference Result 5199 states and 7238 transitions. [2023-11-29 03:45:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:45:55,418 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 389 [2023-11-29 03:45:55,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:55,426 INFO L225 Difference]: With dead ends: 5199 [2023-11-29 03:45:55,426 INFO L226 Difference]: Without dead ends: 2467 [2023-11-29 03:45:55,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 763 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:45:55,433 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 50 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:55,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 230 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:45:55,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2023-11-29 03:45:55,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2439. [2023-11-29 03:45:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2439 states, 1928 states have (on average 1.125) internal successors, (2169), 1915 states have internal predecessors, (2169), 342 states have call successors, (342), 111 states have call predecessors, (342), 163 states have return successors, (768), 412 states have call predecessors, (768), 336 states have call successors, (768) [2023-11-29 03:45:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 3279 transitions. [2023-11-29 03:45:55,633 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 3279 transitions. Word has length 389 [2023-11-29 03:45:55,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:55,633 INFO L495 AbstractCegarLoop]: Abstraction has 2439 states and 3279 transitions. [2023-11-29 03:45:55,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 03:45:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 3279 transitions. [2023-11-29 03:45:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-29 03:45:55,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:55,636 INFO L195 NwaCegarLoop]: trace histogram [39, 36, 20, 20, 20, 20, 19, 18, 18, 18, 17, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:45:55,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2023-11-29 03:45:55,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:55,837 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:45:55,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:55,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1827115119, now seen corresponding path program 8 times [2023-11-29 03:45:55,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:55,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454980012] [2023-11-29 03:45:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:55,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:55,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:55,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574551518] [2023-11-29 03:45:55,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:45:55,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:55,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:55,857 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:55,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-11-29 03:45:56,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:45:56,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:45:56,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:45:56,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4116 backedges. 1497 proven. 46 refuted. 0 times theorem prover too weak. 2573 trivial. 0 not checked. [2023-11-29 03:45:56,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4116 backedges. 577 proven. 127 refuted. 0 times theorem prover too weak. 3412 trivial. 0 not checked. [2023-11-29 03:45:57,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:57,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454980012] [2023-11-29 03:45:57,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:45:57,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574551518] [2023-11-29 03:45:57,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574551518] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:45:57,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:45:57,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2023-11-29 03:45:57,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122476172] [2023-11-29 03:45:57,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:45:57,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 03:45:57,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:57,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:45:57,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:45:57,228 INFO L87 Difference]: Start difference. First operand 2439 states and 3279 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 11 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 10 states have call predecessors, (20), 11 states have call successors, (20) [2023-11-29 03:45:58,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:58,752 INFO L93 Difference]: Finished difference Result 4680 states and 6415 transitions. [2023-11-29 03:45:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 03:45:58,753 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 11 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 10 states have call predecessors, (20), 11 states have call successors, (20) Word has length 409 [2023-11-29 03:45:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:58,761 INFO L225 Difference]: With dead ends: 4680 [2023-11-29 03:45:58,761 INFO L226 Difference]: Without dead ends: 2603 [2023-11-29 03:45:58,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 792 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 03:45:58,766 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 80 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:58,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 382 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:45:58,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2023-11-29 03:45:58,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2541. [2023-11-29 03:45:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2020 states have (on average 1.1287128712871286) internal successors, (2280), 2012 states have internal predecessors, (2280), 342 states have call successors, (342), 111 states have call predecessors, (342), 173 states have return successors, (817), 417 states have call predecessors, (817), 336 states have call successors, (817) [2023-11-29 03:45:58,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3439 transitions. [2023-11-29 03:45:58,994 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3439 transitions. Word has length 409 [2023-11-29 03:45:58,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:58,995 INFO L495 AbstractCegarLoop]: Abstraction has 2541 states and 3439 transitions. [2023-11-29 03:45:58,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 21 states have internal predecessors, (107), 11 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 10 states have call predecessors, (20), 11 states have call successors, (20) [2023-11-29 03:45:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3439 transitions. [2023-11-29 03:45:58,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-29 03:45:58,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:58,998 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 19, 19, 19, 19, 19, 19, 19, 19, 18, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:45:59,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2023-11-29 03:45:59,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:59,199 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:45:59,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash 860100297, now seen corresponding path program 9 times [2023-11-29 03:45:59,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:59,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340002111] [2023-11-29 03:45:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:59,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:59,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:59,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360045484] [2023-11-29 03:45:59,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:45:59,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:59,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:59,219 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:59,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-11-29 03:45:59,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 03:45:59,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:45:59,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 03:45:59,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4109 backedges. 926 proven. 54 refuted. 0 times theorem prover too weak. 3129 trivial. 0 not checked. [2023-11-29 03:45:59,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:00,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:00,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340002111] [2023-11-29 03:46:00,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:46:00,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360045484] [2023-11-29 03:46:00,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360045484] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:46:00,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:46:00,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-29 03:46:00,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894638120] [2023-11-29 03:46:00,591 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:00,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:46:00,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:00,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:46:00,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:46:00,592 INFO L87 Difference]: Start difference. First operand 2541 states and 3439 transitions. Second operand has 18 states, 16 states have (on average 4.1875) internal successors, (67), 18 states have internal predecessors, (67), 4 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-29 03:46:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:01,678 INFO L93 Difference]: Finished difference Result 2653 states and 3705 transitions. [2023-11-29 03:46:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:46:01,679 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.1875) internal successors, (67), 18 states have internal predecessors, (67), 4 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) Word has length 409 [2023-11-29 03:46:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:01,687 INFO L225 Difference]: With dead ends: 2653 [2023-11-29 03:46:01,687 INFO L226 Difference]: Without dead ends: 2652 [2023-11-29 03:46:01,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:46:01,689 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 86 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:01,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 311 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:46:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2023-11-29 03:46:01,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2562. [2023-11-29 03:46:01,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2038 states have (on average 1.1270853778213936) internal successors, (2297), 2028 states have internal predecessors, (2297), 342 states have call successors, (342), 111 states have call predecessors, (342), 176 states have return successors, (826), 422 states have call predecessors, (826), 336 states have call successors, (826) [2023-11-29 03:46:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 3465 transitions. [2023-11-29 03:46:01,911 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 3465 transitions. Word has length 409 [2023-11-29 03:46:01,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:01,912 INFO L495 AbstractCegarLoop]: Abstraction has 2562 states and 3465 transitions. [2023-11-29 03:46:01,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.1875) internal successors, (67), 18 states have internal predecessors, (67), 4 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-29 03:46:01,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 3465 transitions. [2023-11-29 03:46:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2023-11-29 03:46:01,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:01,916 INFO L195 NwaCegarLoop]: trace histogram [41, 38, 22, 22, 22, 22, 20, 20, 20, 19, 19, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:46:01,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2023-11-29 03:46:02,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:02,117 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:46:02,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1923375825, now seen corresponding path program 10 times [2023-11-29 03:46:02,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:02,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903395331] [2023-11-29 03:46:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:02,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:02,141 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:46:02,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082224780] [2023-11-29 03:46:02,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:46:02,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:02,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:02,143 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:02,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-11-29 03:46:02,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:46:02,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:46:02,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 03:46:02,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4654 backedges. 1684 proven. 310 refuted. 0 times theorem prover too weak. 2660 trivial. 0 not checked. [2023-11-29 03:46:03,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:06,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4654 backedges. 1684 proven. 344 refuted. 0 times theorem prover too weak. 2626 trivial. 0 not checked. [2023-11-29 03:46:06,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:06,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903395331] [2023-11-29 03:46:06,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:46:06,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082224780] [2023-11-29 03:46:06,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082224780] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:46:06,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:46:06,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 32] total 45 [2023-11-29 03:46:06,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654360784] [2023-11-29 03:46:06,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:06,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 03:46:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:06,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 03:46:06,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 03:46:06,583 INFO L87 Difference]: Start difference. First operand 2562 states and 3465 transitions. Second operand has 45 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 42 states have internal predecessors, (175), 24 states have call successors, (31), 9 states have call predecessors, (31), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) [2023-11-29 03:46:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:13,583 INFO L93 Difference]: Finished difference Result 9272 states and 14032 transitions. [2023-11-29 03:46:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-11-29 03:46:13,584 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 42 states have internal predecessors, (175), 24 states have call successors, (31), 9 states have call predecessors, (31), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) Word has length 429 [2023-11-29 03:46:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:13,604 INFO L225 Difference]: With dead ends: 9272 [2023-11-29 03:46:13,604 INFO L226 Difference]: Without dead ends: 7114 [2023-11-29 03:46:13,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 816 SyntacticMatches, 8 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1368, Invalid=10404, Unknown=0, NotChecked=0, Total=11772 [2023-11-29 03:46:13,613 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 529 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:13,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 890 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 03:46:13,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2023-11-29 03:46:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 4277. [2023-11-29 03:46:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4277 states, 3501 states have (on average 1.1496715224221652) internal successors, (4025), 3430 states have internal predecessors, (4025), 555 states have call successors, (555), 158 states have call predecessors, (555), 215 states have return successors, (1645), 688 states have call predecessors, (1645), 542 states have call successors, (1645) [2023-11-29 03:46:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 6225 transitions. [2023-11-29 03:46:14,153 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 6225 transitions. Word has length 429 [2023-11-29 03:46:14,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:14,154 INFO L495 AbstractCegarLoop]: Abstraction has 4277 states and 6225 transitions. [2023-11-29 03:46:14,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 42 states have internal predecessors, (175), 24 states have call successors, (31), 9 states have call predecessors, (31), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) [2023-11-29 03:46:14,154 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 6225 transitions. [2023-11-29 03:46:14,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-11-29 03:46:14,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:14,158 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 24, 24, 24, 24, 24, 24, 24, 24, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:14,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2023-11-29 03:46:14,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:14,359 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:46:14,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:14,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1640988256, now seen corresponding path program 4 times [2023-11-29 03:46:14,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:14,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743170166] [2023-11-29 03:46:14,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:14,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:14,377 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:46:14,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748458725] [2023-11-29 03:46:14,378 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:46:14,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:14,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:14,379 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:14,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-11-29 03:46:14,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:46:14,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:46:14,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:46:14,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6689 backedges. 1913 proven. 155 refuted. 0 times theorem prover too weak. 4621 trivial. 0 not checked. [2023-11-29 03:46:14,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6689 backedges. 945 proven. 245 refuted. 0 times theorem prover too weak. 5499 trivial. 0 not checked. [2023-11-29 03:46:16,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:16,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743170166] [2023-11-29 03:46:16,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:46:16,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748458725] [2023-11-29 03:46:16,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748458725] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:46:16,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:46:16,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 21 [2023-11-29 03:46:16,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081919563] [2023-11-29 03:46:16,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:16,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 03:46:16,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:16,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:46:16,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:46:16,168 INFO L87 Difference]: Start difference. First operand 4277 states and 6225 transitions. Second operand has 21 states, 18 states have (on average 6.111111111111111) internal successors, (110), 20 states have internal predecessors, (110), 13 states have call successors, (23), 3 states have call predecessors, (23), 7 states have return successors, (24), 8 states have call predecessors, (24), 12 states have call successors, (24) [2023-11-29 03:46:17,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:17,859 INFO L93 Difference]: Finished difference Result 4421 states and 6412 transitions. [2023-11-29 03:46:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 03:46:17,860 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.111111111111111) internal successors, (110), 20 states have internal predecessors, (110), 13 states have call successors, (23), 3 states have call predecessors, (23), 7 states have return successors, (24), 8 states have call predecessors, (24), 12 states have call successors, (24) Word has length 506 [2023-11-29 03:46:17,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:17,873 INFO L225 Difference]: With dead ends: 4421 [2023-11-29 03:46:17,873 INFO L226 Difference]: Without dead ends: 4306 [2023-11-29 03:46:17,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1027 GetRequests, 985 SyntacticMatches, 11 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 03:46:17,875 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 106 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:17,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 670 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:46:17,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2023-11-29 03:46:18,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 4251. [2023-11-29 03:46:18,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4251 states, 3483 states have (on average 1.1495836922193512) internal successors, (4004), 3411 states have internal predecessors, (4004), 548 states have call successors, (548), 156 states have call predecessors, (548), 214 states have return successors, (1619), 683 states have call predecessors, (1619), 537 states have call successors, (1619) [2023-11-29 03:46:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 6171 transitions. [2023-11-29 03:46:18,332 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 6171 transitions. Word has length 506 [2023-11-29 03:46:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:18,333 INFO L495 AbstractCegarLoop]: Abstraction has 4251 states and 6171 transitions. [2023-11-29 03:46:18,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.111111111111111) internal successors, (110), 20 states have internal predecessors, (110), 13 states have call successors, (23), 3 states have call predecessors, (23), 7 states have return successors, (24), 8 states have call predecessors, (24), 12 states have call successors, (24) [2023-11-29 03:46:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 6171 transitions. [2023-11-29 03:46:18,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-11-29 03:46:18,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:18,339 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 24, 22, 22, 22, 22, 22, 22, 22, 22, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2023-11-29 03:46:18,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2023-11-29 03:46:18,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2023-11-29 03:46:18,539 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:46:18,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:18,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1096163313, now seen corresponding path program 1 times [2023-11-29 03:46:18,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:18,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013592423] [2023-11-29 03:46:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:18,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:18,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:46:18,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312966037] [2023-11-29 03:46:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:18,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:18,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:18,569 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:18,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-11-29 03:46:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:18,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 03:46:18,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 1257 proven. 100 refuted. 0 times theorem prover too weak. 4764 trivial. 0 not checked. [2023-11-29 03:46:19,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6121 backedges. 81 proven. 118 refuted. 0 times theorem prover too weak. 5922 trivial. 0 not checked. [2023-11-29 03:46:19,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:19,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013592423] [2023-11-29 03:46:19,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:46:19,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312966037] [2023-11-29 03:46:19,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312966037] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:46:19,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:46:19,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 24 [2023-11-29 03:46:19,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46575096] [2023-11-29 03:46:19,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:19,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 03:46:19,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:19,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 03:46:19,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:46:19,911 INFO L87 Difference]: Start difference. First operand 4251 states and 6171 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 12 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2023-11-29 03:46:21,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:21,260 INFO L93 Difference]: Finished difference Result 5048 states and 7176 transitions. [2023-11-29 03:46:21,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 03:46:21,261 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 12 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) Word has length 502 [2023-11-29 03:46:21,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:21,270 INFO L225 Difference]: With dead ends: 5048 [2023-11-29 03:46:21,270 INFO L226 Difference]: Without dead ends: 4280 [2023-11-29 03:46:21,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1019 GetRequests, 972 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=322, Invalid=1318, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 03:46:21,273 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 59 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:21,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 772 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:46:21,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2023-11-29 03:46:21,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4256. [2023-11-29 03:46:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 3488 states have (on average 1.135321100917431) internal successors, (3960), 3415 states have internal predecessors, (3960), 548 states have call successors, (548), 156 states have call predecessors, (548), 214 states have return successors, (1619), 684 states have call predecessors, (1619), 537 states have call successors, (1619) [2023-11-29 03:46:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 6127 transitions. [2023-11-29 03:46:21,626 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 6127 transitions. Word has length 502 [2023-11-29 03:46:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:21,626 INFO L495 AbstractCegarLoop]: Abstraction has 4256 states and 6127 transitions. [2023-11-29 03:46:21,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 12 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2023-11-29 03:46:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 6127 transitions. [2023-11-29 03:46:21,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-29 03:46:21,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:21,629 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 21, 16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2023-11-29 03:46:21,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2023-11-29 03:46:21,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2023-11-29 03:46:21,829 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:46:21,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash 627890925, now seen corresponding path program 2 times [2023-11-29 03:46:21,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:21,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691700811] [2023-11-29 03:46:21,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:21,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:21,842 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:46:21,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145891715] [2023-11-29 03:46:21,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:46:21,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:21,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:21,844 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:21,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-11-29 03:46:22,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:46:22,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:46:22,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:46:22,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3837 backedges. 2 proven. 132 refuted. 0 times theorem prover too weak. 3703 trivial. 0 not checked. [2023-11-29 03:46:22,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3837 backedges. 2 proven. 132 refuted. 0 times theorem prover too weak. 3703 trivial. 0 not checked. [2023-11-29 03:46:22,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:22,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691700811] [2023-11-29 03:46:22,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:46:22,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145891715] [2023-11-29 03:46:22,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145891715] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:46:22,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:46:22,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-11-29 03:46:22,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987517708] [2023-11-29 03:46:22,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:22,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 03:46:22,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 03:46:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:46:22,661 INFO L87 Difference]: Start difference. First operand 4256 states and 6127 transitions. Second operand has 22 states, 21 states have (on average 5.238095238095238) internal successors, (110), 22 states have internal predecessors, (110), 11 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2023-11-29 03:46:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:24,662 INFO L93 Difference]: Finished difference Result 4761 states and 6821 transitions. [2023-11-29 03:46:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-29 03:46:24,663 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.238095238095238) internal successors, (110), 22 states have internal predecessors, (110), 11 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) Word has length 409 [2023-11-29 03:46:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:24,677 INFO L225 Difference]: With dead ends: 4761 [2023-11-29 03:46:24,677 INFO L226 Difference]: Without dead ends: 4729 [2023-11-29 03:46:24,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1032, Invalid=3660, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 03:46:24,681 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 152 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:24,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 524 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:46:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2023-11-29 03:46:25,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4068. [2023-11-29 03:46:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4068 states, 3317 states have (on average 1.0982815797407295) internal successors, (3643), 3257 states have internal predecessors, (3643), 532 states have call successors, (532), 156 states have call predecessors, (532), 214 states have return successors, (1544), 654 states have call predecessors, (1544), 521 states have call successors, (1544) [2023-11-29 03:46:25,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4068 states to 4068 states and 5719 transitions. [2023-11-29 03:46:25,152 INFO L78 Accepts]: Start accepts. Automaton has 4068 states and 5719 transitions. Word has length 409 [2023-11-29 03:46:25,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:25,152 INFO L495 AbstractCegarLoop]: Abstraction has 4068 states and 5719 transitions. [2023-11-29 03:46:25,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.238095238095238) internal successors, (110), 22 states have internal predecessors, (110), 11 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2023-11-29 03:46:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4068 states and 5719 transitions. [2023-11-29 03:46:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-11-29 03:46:25,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:25,157 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 25, 25, 25, 25, 25, 25, 25, 25, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:25,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2023-11-29 03:46:25,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2023-11-29 03:46:25,357 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:46:25,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:25,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1058215880, now seen corresponding path program 5 times [2023-11-29 03:46:25,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:25,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883974886] [2023-11-29 03:46:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:25,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:25,382 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:46:25,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456702330] [2023-11-29 03:46:25,383 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:46:25,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:25,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:25,384 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:25,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-11-29 03:46:25,744 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-11-29 03:46:25,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:46:25,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:46:25,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7025 backedges. 1357 proven. 337 refuted. 0 times theorem prover too weak. 5331 trivial. 0 not checked. [2023-11-29 03:46:26,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 7025 backedges. 1361 proven. 342 refuted. 0 times theorem prover too weak. 5322 trivial. 0 not checked. [2023-11-29 03:46:28,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:28,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883974886] [2023-11-29 03:46:28,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:46:28,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456702330] [2023-11-29 03:46:28,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456702330] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:46:28,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:46:28,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 26 [2023-11-29 03:46:28,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680825219] [2023-11-29 03:46:28,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:28,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 03:46:28,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:28,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 03:46:28,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:46:28,099 INFO L87 Difference]: Start difference. First operand 4068 states and 5719 transitions. Second operand has 26 states, 24 states have (on average 4.375) internal successors, (105), 25 states have internal predecessors, (105), 14 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (23), 13 states have call predecessors, (23), 13 states have call successors, (23) [2023-11-29 03:46:30,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:30,732 INFO L93 Difference]: Finished difference Result 7391 states and 10651 transitions. [2023-11-29 03:46:30,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 03:46:30,732 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.375) internal successors, (105), 25 states have internal predecessors, (105), 14 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (23), 13 states have call predecessors, (23), 13 states have call successors, (23) Word has length 516 [2023-11-29 03:46:30,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:30,742 INFO L225 Difference]: With dead ends: 7391 [2023-11-29 03:46:30,742 INFO L226 Difference]: Without dead ends: 3860 [2023-11-29 03:46:30,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 996 SyntacticMatches, 17 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=222, Invalid=1418, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 03:46:30,752 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 137 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:30,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 910 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 03:46:30,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2023-11-29 03:46:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 3350. [2023-11-29 03:46:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 2710 states have (on average 1.0952029520295203) internal successors, (2968), 2666 states have internal predecessors, (2968), 442 states have call successors, (442), 148 states have call predecessors, (442), 193 states have return successors, (1130), 535 states have call predecessors, (1130), 427 states have call successors, (1130) [2023-11-29 03:46:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 4540 transitions. [2023-11-29 03:46:31,123 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 4540 transitions. Word has length 516 [2023-11-29 03:46:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:31,123 INFO L495 AbstractCegarLoop]: Abstraction has 3350 states and 4540 transitions. [2023-11-29 03:46:31,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.375) internal successors, (105), 25 states have internal predecessors, (105), 14 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (23), 13 states have call predecessors, (23), 13 states have call successors, (23) [2023-11-29 03:46:31,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 4540 transitions. [2023-11-29 03:46:31,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-11-29 03:46:31,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:31,127 INFO L195 NwaCegarLoop]: trace histogram [41, 40, 25, 25, 25, 25, 25, 25, 25, 24, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:31,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2023-11-29 03:46:31,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:31,328 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:46:31,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1629054253, now seen corresponding path program 14 times [2023-11-29 03:46:31,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:31,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628180508] [2023-11-29 03:46:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:31,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:31,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:46:31,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87842161] [2023-11-29 03:46:31,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:46:31,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:31,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:31,350 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:31,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-11-29 03:46:31,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:46:31,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:46:31,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 03:46:31,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5226 backedges. 2354 proven. 21 refuted. 0 times theorem prover too weak. 2851 trivial. 0 not checked. [2023-11-29 03:46:32,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5226 backedges. 983 proven. 225 refuted. 0 times theorem prover too weak. 4018 trivial. 0 not checked. [2023-11-29 03:46:34,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:34,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628180508] [2023-11-29 03:46:34,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:46:34,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87842161] [2023-11-29 03:46:34,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87842161] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:46:34,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:46:34,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 33 [2023-11-29 03:46:34,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999788456] [2023-11-29 03:46:34,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:34,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 03:46:34,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 03:46:34,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 03:46:34,385 INFO L87 Difference]: Start difference. First operand 3350 states and 4540 transitions. Second operand has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 33 states have internal predecessors, (140), 18 states have call successors, (28), 2 states have call predecessors, (28), 7 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) [2023-11-29 03:46:36,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:36,411 INFO L93 Difference]: Finished difference Result 6597 states and 9278 transitions. [2023-11-29 03:46:36,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 03:46:36,412 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 33 states have internal predecessors, (140), 18 states have call successors, (28), 2 states have call predecessors, (28), 7 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) Word has length 426 [2023-11-29 03:46:36,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:36,422 INFO L225 Difference]: With dead ends: 6597 [2023-11-29 03:46:36,422 INFO L226 Difference]: Without dead ends: 3551 [2023-11-29 03:46:36,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 865 GetRequests, 814 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=334, Invalid=1828, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 03:46:36,431 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 90 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:36,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 500 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:46:36,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2023-11-29 03:46:36,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3360. [2023-11-29 03:46:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 2718 states have (on average 1.0949227373068433) internal successors, (2976), 2674 states have internal predecessors, (2976), 442 states have call successors, (442), 148 states have call predecessors, (442), 195 states have return successors, (1173), 537 states have call predecessors, (1173), 427 states have call successors, (1173) [2023-11-29 03:46:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 4591 transitions. [2023-11-29 03:46:36,787 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 4591 transitions. Word has length 426 [2023-11-29 03:46:36,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:36,787 INFO L495 AbstractCegarLoop]: Abstraction has 3360 states and 4591 transitions. [2023-11-29 03:46:36,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.242424242424242) internal successors, (140), 33 states have internal predecessors, (140), 18 states have call successors, (28), 2 states have call predecessors, (28), 7 states have return successors, (28), 16 states have call predecessors, (28), 18 states have call successors, (28) [2023-11-29 03:46:36,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 4591 transitions. [2023-11-29 03:46:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2023-11-29 03:46:36,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:36,791 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 27, 27, 27, 27, 27, 27, 27, 27, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:36,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2023-11-29 03:46:36,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:36,992 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:46:36,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:36,992 INFO L85 PathProgramCache]: Analyzing trace with hash -184729976, now seen corresponding path program 6 times [2023-11-29 03:46:36,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:36,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777460913] [2023-11-29 03:46:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:36,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:37,008 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:46:37,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689993554] [2023-11-29 03:46:37,008 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:46:37,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:37,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:37,009 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:37,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-11-29 03:46:37,237 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-29 03:46:37,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:46:37,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 03:46:37,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7727 backedges. 1039 proven. 33 refuted. 0 times theorem prover too weak. 6655 trivial. 0 not checked. [2023-11-29 03:46:37,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 7727 backedges. 954 proven. 124 refuted. 0 times theorem prover too weak. 6649 trivial. 0 not checked. [2023-11-29 03:46:38,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:38,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777460913] [2023-11-29 03:46:38,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:46:38,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689993554] [2023-11-29 03:46:38,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689993554] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:46:38,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:46:38,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 30 [2023-11-29 03:46:38,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509892450] [2023-11-29 03:46:38,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:38,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 03:46:38,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:38,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 03:46:38,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2023-11-29 03:46:38,555 INFO L87 Difference]: Start difference. First operand 3360 states and 4591 transitions. Second operand has 30 states, 30 states have (on average 3.966666666666667) internal successors, (119), 28 states have internal predecessors, (119), 16 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 14 states have call predecessors, (23), 14 states have call successors, (23) [2023-11-29 03:46:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:40,829 INFO L93 Difference]: Finished difference Result 6272 states and 8800 transitions. [2023-11-29 03:46:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 03:46:40,829 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.966666666666667) internal successors, (119), 28 states have internal predecessors, (119), 16 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 14 states have call predecessors, (23), 14 states have call successors, (23) Word has length 536 [2023-11-29 03:46:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:40,837 INFO L225 Difference]: With dead ends: 6272 [2023-11-29 03:46:40,837 INFO L226 Difference]: Without dead ends: 3544 [2023-11-29 03:46:40,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1099 GetRequests, 1039 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=482, Invalid=2598, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 03:46:40,843 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 110 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:40,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 720 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:46:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2023-11-29 03:46:41,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3493. [2023-11-29 03:46:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 2816 states have (on average 1.0941051136363635) internal successors, (3081), 2770 states have internal predecessors, (3081), 469 states have call successors, (469), 156 states have call predecessors, (469), 203 states have return successors, (1241), 566 states have call predecessors, (1241), 454 states have call successors, (1241) [2023-11-29 03:46:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 4791 transitions. [2023-11-29 03:46:41,148 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 4791 transitions. Word has length 536 [2023-11-29 03:46:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:41,148 INFO L495 AbstractCegarLoop]: Abstraction has 3493 states and 4791 transitions. [2023-11-29 03:46:41,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.966666666666667) internal successors, (119), 28 states have internal predecessors, (119), 16 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 14 states have call predecessors, (23), 14 states have call successors, (23) [2023-11-29 03:46:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 4791 transitions. [2023-11-29 03:46:41,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-11-29 03:46:41,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:41,153 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 26, 26, 26, 26, 26, 26, 26, 26, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:41,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2023-11-29 03:46:41,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-11-29 03:46:41,353 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:46:41,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:41,353 INFO L85 PathProgramCache]: Analyzing trace with hash -578646304, now seen corresponding path program 7 times [2023-11-29 03:46:41,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:41,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146650791] [2023-11-29 03:46:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:41,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:41,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:46:41,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410395177] [2023-11-29 03:46:41,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:46:41,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:41,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:41,370 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:41,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-11-29 03:46:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:41,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 03:46:41,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7371 backedges. 440 proven. 116 refuted. 0 times theorem prover too weak. 6815 trivial. 0 not checked. [2023-11-29 03:46:42,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:42,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:42,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146650791] [2023-11-29 03:46:42,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:46:42,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410395177] [2023-11-29 03:46:42,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410395177] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:46:42,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:46:42,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-29 03:46:42,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587599520] [2023-11-29 03:46:42,567 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:42,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:46:42,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:42,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:46:42,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:46:42,568 INFO L87 Difference]: Start difference. First operand 3493 states and 4791 transitions. Second operand has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 03:46:43,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:43,661 INFO L93 Difference]: Finished difference Result 3799 states and 5217 transitions. [2023-11-29 03:46:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:46:43,662 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 526 [2023-11-29 03:46:43,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:43,670 INFO L225 Difference]: With dead ends: 3799 [2023-11-29 03:46:43,670 INFO L226 Difference]: Without dead ends: 3795 [2023-11-29 03:46:43,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:46:43,672 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 50 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:43,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 403 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:46:43,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3795 states. [2023-11-29 03:46:44,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3795 to 3775. [2023-11-29 03:46:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3040 states have (on average 1.094407894736842) internal successors, (3327), 2990 states have internal predecessors, (3327), 516 states have call successors, (516), 165 states have call predecessors, (516), 214 states have return successors, (1330), 619 states have call predecessors, (1330), 501 states have call successors, (1330) [2023-11-29 03:46:44,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5173 transitions. [2023-11-29 03:46:44,015 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5173 transitions. Word has length 526 [2023-11-29 03:46:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:44,016 INFO L495 AbstractCegarLoop]: Abstraction has 3775 states and 5173 transitions. [2023-11-29 03:46:44,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 03:46:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5173 transitions. [2023-11-29 03:46:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-11-29 03:46:44,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:44,021 INFO L195 NwaCegarLoop]: trace histogram [42, 41, 26, 26, 26, 26, 26, 26, 26, 25, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:46:44,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2023-11-29 03:46:44,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:44,221 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:46:44,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:44,222 INFO L85 PathProgramCache]: Analyzing trace with hash -526080789, now seen corresponding path program 15 times [2023-11-29 03:46:44,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:44,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490689570] [2023-11-29 03:46:44,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:44,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:44,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:46:44,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304891142] [2023-11-29 03:46:44,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:46:44,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:44,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:44,239 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:44,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-11-29 03:46:44,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-29 03:46:44,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:46:44,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 03:46:44,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5538 backedges. 1384 proven. 98 refuted. 0 times theorem prover too weak. 4056 trivial. 0 not checked. [2023-11-29 03:46:45,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:48,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:48,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490689570] [2023-11-29 03:46:48,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:46:48,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304891142] [2023-11-29 03:46:48,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304891142] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:46:48,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:46:48,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-29 03:46:48,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692787305] [2023-11-29 03:46:48,140 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:48,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:46:48,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:48,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:46:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:46:48,141 INFO L87 Difference]: Start difference. First operand 3775 states and 5173 transitions. Second operand has 19 states, 18 states have (on average 4.055555555555555) internal successors, (73), 19 states have internal predecessors, (73), 6 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 03:47:00,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 03:47:02,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:02,885 INFO L93 Difference]: Finished difference Result 3919 states and 5615 transitions. [2023-11-29 03:47:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:47:02,885 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.055555555555555) internal successors, (73), 19 states have internal predecessors, (73), 6 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 436 [2023-11-29 03:47:02,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:02,895 INFO L225 Difference]: With dead ends: 3919 [2023-11-29 03:47:02,895 INFO L226 Difference]: Without dead ends: 3918 [2023-11-29 03:47:02,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:47:02,897 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 27 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:02,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 215 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 03:47:02,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2023-11-29 03:47:03,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3823. [2023-11-29 03:47:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3823 states, 3079 states have (on average 1.0915881779798635) internal successors, (3361), 3028 states have internal predecessors, (3361), 516 states have call successors, (516), 165 states have call predecessors, (516), 223 states have return successors, (1367), 629 states have call predecessors, (1367), 501 states have call successors, (1367) [2023-11-29 03:47:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3823 states to 3823 states and 5244 transitions. [2023-11-29 03:47:03,248 INFO L78 Accepts]: Start accepts. Automaton has 3823 states and 5244 transitions. Word has length 436 [2023-11-29 03:47:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:03,249 INFO L495 AbstractCegarLoop]: Abstraction has 3823 states and 5244 transitions. [2023-11-29 03:47:03,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.055555555555555) internal successors, (73), 19 states have internal predecessors, (73), 6 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 03:47:03,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3823 states and 5244 transitions. [2023-11-29 03:47:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-11-29 03:47:03,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:03,252 INFO L195 NwaCegarLoop]: trace histogram [43, 42, 27, 27, 27, 27, 27, 27, 27, 26, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:47:03,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-11-29 03:47:03,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:03,453 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:03,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash -659510333, now seen corresponding path program 16 times [2023-11-29 03:47:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:03,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518498582] [2023-11-29 03:47:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:03,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:03,467 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:03,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360362102] [2023-11-29 03:47:03,467 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:47:03,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:03,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:03,468 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:03,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-11-29 03:47:03,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:47:03,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:03,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 03:47:03,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:04,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5860 backedges. 2132 proven. 544 refuted. 0 times theorem prover too weak. 3184 trivial. 0 not checked. [2023-11-29 03:47:04,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5860 backedges. 2132 proven. 617 refuted. 0 times theorem prover too weak. 3111 trivial. 0 not checked. [2023-11-29 03:47:08,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:08,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518498582] [2023-11-29 03:47:08,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:08,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360362102] [2023-11-29 03:47:08,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360362102] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:08,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:08,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 33] total 42 [2023-11-29 03:47:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924406744] [2023-11-29 03:47:08,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:08,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 03:47:08,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:08,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 03:47:08,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 03:47:08,408 INFO L87 Difference]: Start difference. First operand 3823 states and 5244 transitions. Second operand has 42 states, 38 states have (on average 4.447368421052632) internal successors, (169), 39 states have internal predecessors, (169), 23 states have call successors, (30), 5 states have call predecessors, (30), 14 states have return successors, (35), 16 states have call predecessors, (35), 19 states have call successors, (35) [2023-11-29 03:47:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:11,757 INFO L93 Difference]: Finished difference Result 8501 states and 12854 transitions. [2023-11-29 03:47:11,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 03:47:11,757 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 4.447368421052632) internal successors, (169), 39 states have internal predecessors, (169), 23 states have call successors, (30), 5 states have call predecessors, (30), 14 states have return successors, (35), 16 states have call predecessors, (35), 19 states have call successors, (35) Word has length 446 [2023-11-29 03:47:11,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:11,770 INFO L225 Difference]: With dead ends: 8501 [2023-11-29 03:47:11,770 INFO L226 Difference]: Without dead ends: 5067 [2023-11-29 03:47:11,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 841 SyntacticMatches, 13 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=781, Invalid=3775, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 03:47:11,777 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 383 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:11,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 666 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 03:47:11,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5067 states. [2023-11-29 03:47:12,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5067 to 4276. [2023-11-29 03:47:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 3400 states have (on average 1.0920588235294117) internal successors, (3713), 3372 states have internal predecessors, (3713), 619 states have call successors, (619), 197 states have call predecessors, (619), 252 states have return successors, (1727), 706 states have call predecessors, (1727), 604 states have call successors, (1727) [2023-11-29 03:47:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 6059 transitions. [2023-11-29 03:47:12,219 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 6059 transitions. Word has length 446 [2023-11-29 03:47:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:12,219 INFO L495 AbstractCegarLoop]: Abstraction has 4276 states and 6059 transitions. [2023-11-29 03:47:12,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 4.447368421052632) internal successors, (169), 39 states have internal predecessors, (169), 23 states have call successors, (30), 5 states have call predecessors, (30), 14 states have return successors, (35), 16 states have call predecessors, (35), 19 states have call successors, (35) [2023-11-29 03:47:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 6059 transitions. [2023-11-29 03:47:12,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2023-11-29 03:47:12,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:12,223 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 24, 18, 18, 18, 18, 18, 18, 18, 18, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:47:12,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2023-11-29 03:47:12,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2023-11-29 03:47:12,424 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:12,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1652043834, now seen corresponding path program 8 times [2023-11-29 03:47:12,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:12,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548856311] [2023-11-29 03:47:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:12,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:12,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:12,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903348657] [2023-11-29 03:47:12,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:47:12,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:12,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:12,442 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:12,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-11-29 03:47:12,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:47:12,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:12,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:47:12,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4897 backedges. 1487 proven. 26 refuted. 0 times theorem prover too weak. 3384 trivial. 0 not checked. [2023-11-29 03:47:12,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4897 backedges. 555 proven. 69 refuted. 0 times theorem prover too weak. 4273 trivial. 0 not checked. [2023-11-29 03:47:13,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548856311] [2023-11-29 03:47:13,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903348657] [2023-11-29 03:47:13,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903348657] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:13,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:13,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2023-11-29 03:47:13,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093261418] [2023-11-29 03:47:13,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:13,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:47:13,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:13,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:47:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:47:13,592 INFO L87 Difference]: Start difference. First operand 4276 states and 6059 transitions. Second operand has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 15 states have internal predecessors, (101), 10 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 10 states have call successors, (22) [2023-11-29 03:47:14,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:14,427 INFO L93 Difference]: Finished difference Result 7403 states and 10680 transitions. [2023-11-29 03:47:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:47:14,428 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 15 states have internal predecessors, (101), 10 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 10 states have call successors, (22) Word has length 451 [2023-11-29 03:47:14,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:14,437 INFO L225 Difference]: With dead ends: 7403 [2023-11-29 03:47:14,437 INFO L226 Difference]: Without dead ends: 3959 [2023-11-29 03:47:14,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 880 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:47:14,445 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 60 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:14,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 309 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:47:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2023-11-29 03:47:14,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 3914. [2023-11-29 03:47:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3914 states, 3092 states have (on average 1.092496765847348) internal successors, (3378), 3076 states have internal predecessors, (3378), 583 states have call successors, (583), 194 states have call predecessors, (583), 234 states have return successors, (1530), 643 states have call predecessors, (1530), 569 states have call successors, (1530) [2023-11-29 03:47:14,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3914 states to 3914 states and 5491 transitions. [2023-11-29 03:47:14,827 INFO L78 Accepts]: Start accepts. Automaton has 3914 states and 5491 transitions. Word has length 451 [2023-11-29 03:47:14,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:14,828 INFO L495 AbstractCegarLoop]: Abstraction has 3914 states and 5491 transitions. [2023-11-29 03:47:14,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.769230769230769) internal successors, (101), 15 states have internal predecessors, (101), 10 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 10 states have call successors, (22) [2023-11-29 03:47:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3914 states and 5491 transitions. [2023-11-29 03:47:14,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-11-29 03:47:14,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:14,832 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 24, 20, 20, 20, 20, 20, 20, 20, 20, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:47:14,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2023-11-29 03:47:15,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2023-11-29 03:47:15,032 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:15,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:15,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1043993462, now seen corresponding path program 9 times [2023-11-29 03:47:15,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:15,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277836776] [2023-11-29 03:47:15,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:15,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:15,050 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:15,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727679636] [2023-11-29 03:47:15,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:47:15,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:15,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:15,051 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:15,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-11-29 03:47:15,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 03:47:15,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:15,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:47:15,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5459 backedges. 1107 proven. 1 refuted. 0 times theorem prover too weak. 4351 trivial. 0 not checked. [2023-11-29 03:47:15,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5459 backedges. 251 proven. 13 refuted. 0 times theorem prover too weak. 5195 trivial. 0 not checked. [2023-11-29 03:47:15,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:15,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277836776] [2023-11-29 03:47:15,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:15,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727679636] [2023-11-29 03:47:15,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727679636] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:15,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:15,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2023-11-29 03:47:15,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910029665] [2023-11-29 03:47:15,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:15,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:47:15,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:15,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:47:15,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:47:15,565 INFO L87 Difference]: Start difference. First operand 3914 states and 5491 transitions. Second operand has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 03:47:16,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:16,369 INFO L93 Difference]: Finished difference Result 4075 states and 5683 transitions. [2023-11-29 03:47:16,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:47:16,369 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 471 [2023-11-29 03:47:16,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:16,379 INFO L225 Difference]: With dead ends: 4075 [2023-11-29 03:47:16,379 INFO L226 Difference]: Without dead ends: 3914 [2023-11-29 03:47:16,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 926 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:47:16,382 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 55 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:16,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 346 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:47:16,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2023-11-29 03:47:16,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3914. [2023-11-29 03:47:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3914 states, 3092 states have (on average 1.0915265200517466) internal successors, (3375), 3076 states have internal predecessors, (3375), 583 states have call successors, (583), 194 states have call predecessors, (583), 234 states have return successors, (1530), 643 states have call predecessors, (1530), 569 states have call successors, (1530) [2023-11-29 03:47:16,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3914 states to 3914 states and 5488 transitions. [2023-11-29 03:47:16,765 INFO L78 Accepts]: Start accepts. Automaton has 3914 states and 5488 transitions. Word has length 471 [2023-11-29 03:47:16,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:16,765 INFO L495 AbstractCegarLoop]: Abstraction has 3914 states and 5488 transitions. [2023-11-29 03:47:16,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 03:47:16,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3914 states and 5488 transitions. [2023-11-29 03:47:16,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-11-29 03:47:16,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:16,769 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 24, 20, 20, 20, 20, 20, 20, 20, 20, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:47:16,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2023-11-29 03:47:16,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2023-11-29 03:47:16,970 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:16,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1214791222, now seen corresponding path program 10 times [2023-11-29 03:47:16,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:16,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141723326] [2023-11-29 03:47:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:16,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:16,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:16,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500742244] [2023-11-29 03:47:16,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:47:16,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:16,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:16,989 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:16,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-11-29 03:47:17,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:47:17,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:17,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:47:17,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5459 backedges. 2088 proven. 37 refuted. 0 times theorem prover too weak. 3334 trivial. 0 not checked. [2023-11-29 03:47:17,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5459 backedges. 870 proven. 165 refuted. 0 times theorem prover too weak. 4424 trivial. 0 not checked. [2023-11-29 03:47:18,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:18,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141723326] [2023-11-29 03:47:18,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:18,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500742244] [2023-11-29 03:47:18,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500742244] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:18,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:18,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 18 [2023-11-29 03:47:18,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863911421] [2023-11-29 03:47:18,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:18,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:47:18,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:18,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:47:18,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:47:18,483 INFO L87 Difference]: Start difference. First operand 3914 states and 5488 transitions. Second operand has 18 states, 16 states have (on average 7.0625) internal successors, (113), 18 states have internal predecessors, (113), 12 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (25), 8 states have call predecessors, (25), 12 states have call successors, (25) [2023-11-29 03:47:19,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:19,925 INFO L93 Difference]: Finished difference Result 6976 states and 9911 transitions. [2023-11-29 03:47:19,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:47:19,926 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 7.0625) internal successors, (113), 18 states have internal predecessors, (113), 12 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (25), 8 states have call predecessors, (25), 12 states have call successors, (25) Word has length 471 [2023-11-29 03:47:19,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:19,939 INFO L225 Difference]: With dead ends: 6976 [2023-11-29 03:47:19,939 INFO L226 Difference]: Without dead ends: 3925 [2023-11-29 03:47:19,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 951 GetRequests, 921 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:47:19,949 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 64 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:19,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 470 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:47:19,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2023-11-29 03:47:20,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3914. [2023-11-29 03:47:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3914 states, 3092 states have (on average 1.0915265200517466) internal successors, (3375), 3076 states have internal predecessors, (3375), 583 states have call successors, (583), 194 states have call predecessors, (583), 234 states have return successors, (1526), 643 states have call predecessors, (1526), 569 states have call successors, (1526) [2023-11-29 03:47:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3914 states to 3914 states and 5484 transitions. [2023-11-29 03:47:20,417 INFO L78 Accepts]: Start accepts. Automaton has 3914 states and 5484 transitions. Word has length 471 [2023-11-29 03:47:20,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:20,418 INFO L495 AbstractCegarLoop]: Abstraction has 3914 states and 5484 transitions. [2023-11-29 03:47:20,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 7.0625) internal successors, (113), 18 states have internal predecessors, (113), 12 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (25), 8 states have call predecessors, (25), 12 states have call successors, (25) [2023-11-29 03:47:20,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3914 states and 5484 transitions. [2023-11-29 03:47:20,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-11-29 03:47:20,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:20,423 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 24, 22, 22, 22, 22, 22, 22, 22, 22, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:47:20,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2023-11-29 03:47:20,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:20,624 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:20,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:20,624 INFO L85 PathProgramCache]: Analyzing trace with hash -698469046, now seen corresponding path program 11 times [2023-11-29 03:47:20,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:20,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558893556] [2023-11-29 03:47:20,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:20,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:20,647 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:20,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7715710] [2023-11-29 03:47:20,647 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:47:20,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:20,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:20,649 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:20,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-11-29 03:47:21,073 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-11-29 03:47:21,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:21,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 03:47:21,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6061 backedges. 796 proven. 22 refuted. 0 times theorem prover too weak. 5243 trivial. 0 not checked. [2023-11-29 03:47:21,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:21,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:21,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558893556] [2023-11-29 03:47:21,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:21,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7715710] [2023-11-29 03:47:21,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7715710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:21,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:47:21,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-29 03:47:21,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281751662] [2023-11-29 03:47:21,840 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:21,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 03:47:21,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:21,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 03:47:21,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:47:21,841 INFO L87 Difference]: Start difference. First operand 3914 states and 5484 transitions. Second operand has 19 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 03:47:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:23,449 INFO L93 Difference]: Finished difference Result 4300 states and 6188 transitions. [2023-11-29 03:47:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:47:23,450 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 491 [2023-11-29 03:47:23,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:23,464 INFO L225 Difference]: With dead ends: 4300 [2023-11-29 03:47:23,464 INFO L226 Difference]: Without dead ends: 4293 [2023-11-29 03:47:23,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-11-29 03:47:23,468 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 97 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:23,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 440 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:47:23,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2023-11-29 03:47:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 3970. [2023-11-29 03:47:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 3141 states have (on average 1.0897803247373448) internal successors, (3423), 3116 states have internal predecessors, (3423), 589 states have call successors, (589), 194 states have call predecessors, (589), 235 states have return successors, (1555), 659 states have call predecessors, (1555), 575 states have call successors, (1555) [2023-11-29 03:47:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 5567 transitions. [2023-11-29 03:47:23,949 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 5567 transitions. Word has length 491 [2023-11-29 03:47:23,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:23,950 INFO L495 AbstractCegarLoop]: Abstraction has 3970 states and 5567 transitions. [2023-11-29 03:47:23,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 03:47:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 5567 transitions. [2023-11-29 03:47:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-11-29 03:47:23,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:23,955 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 27, 27, 27, 27, 27, 27, 27, 27, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:47:23,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2023-11-29 03:47:24,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:24,156 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:24,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash -873821854, now seen corresponding path program 12 times [2023-11-29 03:47:24,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:24,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660351500] [2023-11-29 03:47:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:24,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:24,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:24,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198390623] [2023-11-29 03:47:24,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:47:24,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:24,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:24,182 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:24,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-11-29 03:47:24,426 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-11-29 03:47:24,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:24,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 03:47:24,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7741 backedges. 462 proven. 77 refuted. 0 times theorem prover too weak. 7202 trivial. 0 not checked. [2023-11-29 03:47:24,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:25,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:25,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660351500] [2023-11-29 03:47:25,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:25,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198390623] [2023-11-29 03:47:25,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198390623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:25,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:47:25,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-29 03:47:25,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689934746] [2023-11-29 03:47:25,436 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:25,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:47:25,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:25,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:47:25,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:47:25,438 INFO L87 Difference]: Start difference. First operand 3970 states and 5567 transitions. Second operand has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-29 03:47:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:26,839 INFO L93 Difference]: Finished difference Result 4023 states and 5631 transitions. [2023-11-29 03:47:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:47:26,840 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 541 [2023-11-29 03:47:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:26,852 INFO L225 Difference]: With dead ends: 4023 [2023-11-29 03:47:26,852 INFO L226 Difference]: Without dead ends: 4019 [2023-11-29 03:47:26,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:47:26,855 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 58 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:26,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 319 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:47:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2023-11-29 03:47:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 3974. [2023-11-29 03:47:27,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3974 states, 3144 states have (on average 1.0896946564885497) internal successors, (3426), 3119 states have internal predecessors, (3426), 590 states have call successors, (590), 194 states have call predecessors, (590), 235 states have return successors, (1555), 660 states have call predecessors, (1555), 575 states have call successors, (1555) [2023-11-29 03:47:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3974 states to 3974 states and 5571 transitions. [2023-11-29 03:47:27,327 INFO L78 Accepts]: Start accepts. Automaton has 3974 states and 5571 transitions. Word has length 541 [2023-11-29 03:47:27,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:27,328 INFO L495 AbstractCegarLoop]: Abstraction has 3974 states and 5571 transitions. [2023-11-29 03:47:27,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-29 03:47:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3974 states and 5571 transitions. [2023-11-29 03:47:27,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-11-29 03:47:27,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:27,333 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 32, 32, 32, 32, 32, 32, 32, 31, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:47:27,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2023-11-29 03:47:27,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:27,534 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:27,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:27,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1583793103, now seen corresponding path program 17 times [2023-11-29 03:47:27,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:27,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779892473] [2023-11-29 03:47:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:27,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:27,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:27,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070511298] [2023-11-29 03:47:27,556 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:47:27,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:27,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:27,557 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:27,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-11-29 03:47:27,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-11-29 03:47:27,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:27,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 03:47:27,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8034 backedges. 2014 proven. 592 refuted. 0 times theorem prover too weak. 5428 trivial. 0 not checked. [2023-11-29 03:47:29,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 8034 backedges. 1982 proven. 670 refuted. 0 times theorem prover too weak. 5382 trivial. 0 not checked. [2023-11-29 03:47:33,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:33,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779892473] [2023-11-29 03:47:33,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:33,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070511298] [2023-11-29 03:47:33,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070511298] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:33,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:33,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 34] total 51 [2023-11-29 03:47:33,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640227149] [2023-11-29 03:47:33,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:33,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 03:47:33,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 03:47:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2309, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 03:47:33,019 INFO L87 Difference]: Start difference. First operand 3974 states and 5571 transitions. Second operand has 51 states, 49 states have (on average 3.836734693877551) internal successors, (188), 47 states have internal predecessors, (188), 27 states have call successors, (37), 5 states have call predecessors, (37), 10 states have return successors, (37), 22 states have call predecessors, (37), 25 states have call successors, (37) [2023-11-29 03:47:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:37,681 INFO L93 Difference]: Finished difference Result 8084 states and 11714 transitions. [2023-11-29 03:47:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 03:47:37,681 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 49 states have (on average 3.836734693877551) internal successors, (188), 47 states have internal predecessors, (188), 27 states have call successors, (37), 5 states have call predecessors, (37), 10 states have return successors, (37), 22 states have call predecessors, (37), 25 states have call successors, (37) Word has length 510 [2023-11-29 03:47:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:37,693 INFO L225 Difference]: With dead ends: 8084 [2023-11-29 03:47:37,693 INFO L226 Difference]: Without dead ends: 4473 [2023-11-29 03:47:37,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 965 SyntacticMatches, 9 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2315 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=868, Invalid=6442, Unknown=0, NotChecked=0, Total=7310 [2023-11-29 03:47:37,702 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 305 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:37,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1046 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 03:47:37,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4473 states. [2023-11-29 03:47:38,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4473 to 4136. [2023-11-29 03:47:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4136 states, 3270 states have (on average 1.0880733944954128) internal successors, (3558), 3245 states have internal predecessors, (3558), 612 states have call successors, (612), 203 states have call predecessors, (612), 249 states have return successors, (1595), 687 states have call predecessors, (1595), 597 states have call successors, (1595) [2023-11-29 03:47:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 5765 transitions. [2023-11-29 03:47:38,160 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 5765 transitions. Word has length 510 [2023-11-29 03:47:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:38,160 INFO L495 AbstractCegarLoop]: Abstraction has 4136 states and 5765 transitions. [2023-11-29 03:47:38,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 49 states have (on average 3.836734693877551) internal successors, (188), 47 states have internal predecessors, (188), 27 states have call successors, (37), 5 states have call predecessors, (37), 10 states have return successors, (37), 22 states have call predecessors, (37), 25 states have call successors, (37) [2023-11-29 03:47:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 5765 transitions. [2023-11-29 03:47:38,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-11-29 03:47:38,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:38,166 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 24, 23, 23, 23, 23, 23, 23, 23, 23, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:47:38,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2023-11-29 03:47:38,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2023-11-29 03:47:38,367 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:38,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:38,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2017830494, now seen corresponding path program 13 times [2023-11-29 03:47:38,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:38,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291258725] [2023-11-29 03:47:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:38,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:38,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:38,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098562207] [2023-11-29 03:47:38,390 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:47:38,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:38,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:38,391 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:38,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2023-11-29 03:47:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:38,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:47:38,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6377 backedges. 1980 proven. 2 refuted. 0 times theorem prover too weak. 4395 trivial. 0 not checked. [2023-11-29 03:47:38,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6377 backedges. 540 proven. 63 refuted. 0 times theorem prover too weak. 5774 trivial. 0 not checked. [2023-11-29 03:47:39,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:39,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291258725] [2023-11-29 03:47:39,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:39,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098562207] [2023-11-29 03:47:39,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098562207] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:39,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:39,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2023-11-29 03:47:39,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479748955] [2023-11-29 03:47:39,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:39,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:47:39,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:39,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:47:39,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:47:39,588 INFO L87 Difference]: Start difference. First operand 4136 states and 5765 transitions. Second operand has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 8 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-29 03:47:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:40,636 INFO L93 Difference]: Finished difference Result 4307 states and 5952 transitions. [2023-11-29 03:47:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:47:40,636 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 8 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 8 states have call successors, (17) Word has length 501 [2023-11-29 03:47:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:40,650 INFO L225 Difference]: With dead ends: 4307 [2023-11-29 03:47:40,650 INFO L226 Difference]: Without dead ends: 4130 [2023-11-29 03:47:40,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1007 GetRequests, 980 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:47:40,653 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 53 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:40,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 524 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:47:40,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2023-11-29 03:47:41,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 4115. [2023-11-29 03:47:41,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4115 states, 3255 states have (on average 1.088479262672811) internal successors, (3543), 3230 states have internal predecessors, (3543), 607 states have call successors, (607), 203 states have call predecessors, (607), 248 states have return successors, (1574), 681 states have call predecessors, (1574), 593 states have call successors, (1574) [2023-11-29 03:47:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4115 states to 4115 states and 5724 transitions. [2023-11-29 03:47:41,138 INFO L78 Accepts]: Start accepts. Automaton has 4115 states and 5724 transitions. Word has length 501 [2023-11-29 03:47:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:41,138 INFO L495 AbstractCegarLoop]: Abstraction has 4115 states and 5724 transitions. [2023-11-29 03:47:41,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 8 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-29 03:47:41,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4115 states and 5724 transitions. [2023-11-29 03:47:41,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-11-29 03:47:41,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:41,143 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 24, 24, 24, 24, 24, 24, 24, 24, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:47:41,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2023-11-29 03:47:41,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2023-11-29 03:47:41,344 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:41,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:41,344 INFO L85 PathProgramCache]: Analyzing trace with hash 8278714, now seen corresponding path program 14 times [2023-11-29 03:47:41,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:41,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456947522] [2023-11-29 03:47:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:41,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:41,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:41,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011556078] [2023-11-29 03:47:41,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:47:41,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:41,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:41,368 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:41,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2023-11-29 03:47:41,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:47:41,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:41,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:47:41,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6703 backedges. 1437 proven. 8 refuted. 0 times theorem prover too weak. 5258 trivial. 0 not checked. [2023-11-29 03:47:41,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:42,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6703 backedges. 633 proven. 51 refuted. 0 times theorem prover too weak. 6019 trivial. 0 not checked. [2023-11-29 03:47:42,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:42,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456947522] [2023-11-29 03:47:42,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:42,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011556078] [2023-11-29 03:47:42,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011556078] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:42,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:42,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 12 [2023-11-29 03:47:42,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829061422] [2023-11-29 03:47:42,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:42,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:47:42,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:42,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:47:42,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:47:42,317 INFO L87 Difference]: Start difference. First operand 4115 states and 5724 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 8 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 03:47:43,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:43,284 INFO L93 Difference]: Finished difference Result 7095 states and 10037 transitions. [2023-11-29 03:47:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:47:43,285 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 8 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 511 [2023-11-29 03:47:43,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:43,297 INFO L225 Difference]: With dead ends: 7095 [2023-11-29 03:47:43,297 INFO L226 Difference]: Without dead ends: 4019 [2023-11-29 03:47:43,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 1004 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:47:43,307 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 42 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:43,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 234 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:47:43,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2023-11-29 03:47:43,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 4019. [2023-11-29 03:47:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4019 states, 3173 states have (on average 1.0891900409706903) internal successors, (3456), 3155 states have internal predecessors, (3456), 599 states have call successors, (599), 203 states have call predecessors, (599), 242 states have return successors, (1509), 660 states have call predecessors, (1509), 585 states have call successors, (1509) [2023-11-29 03:47:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5564 transitions. [2023-11-29 03:47:43,795 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5564 transitions. Word has length 511 [2023-11-29 03:47:43,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:43,796 INFO L495 AbstractCegarLoop]: Abstraction has 4019 states and 5564 transitions. [2023-11-29 03:47:43,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 8 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2023-11-29 03:47:43,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5564 transitions. [2023-11-29 03:47:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-11-29 03:47:43,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:43,801 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 27, 27, 27, 27, 27, 27, 27, 26, 23, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:47:43,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2023-11-29 03:47:44,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:44,002 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:44,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:44,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1740023380, now seen corresponding path program 11 times [2023-11-29 03:47:44,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:44,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805512763] [2023-11-29 03:47:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:44,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:44,030 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:44,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860634090] [2023-11-29 03:47:44,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:47:44,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:44,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:44,032 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:44,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2023-11-29 03:47:44,388 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-11-29 03:47:44,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:44,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:47:44,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7394 backedges. 1868 proven. 56 refuted. 0 times theorem prover too weak. 5470 trivial. 0 not checked. [2023-11-29 03:47:44,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7394 backedges. 1868 proven. 101 refuted. 0 times theorem prover too weak. 5425 trivial. 0 not checked. [2023-11-29 03:47:47,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:47,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805512763] [2023-11-29 03:47:47,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:47,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860634090] [2023-11-29 03:47:47,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860634090] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:47,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:47,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 29 [2023-11-29 03:47:47,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777928719] [2023-11-29 03:47:47,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:47,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 03:47:47,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:47,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 03:47:47,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:47:47,728 INFO L87 Difference]: Start difference. First operand 4019 states and 5564 transitions. Second operand has 29 states, 29 states have (on average 4.172413793103448) internal successors, (121), 25 states have internal predecessors, (121), 16 states have call successors, (23), 5 states have call predecessors, (23), 7 states have return successors, (23), 12 states have call predecessors, (23), 14 states have call successors, (23) [2023-11-29 03:47:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:50,611 INFO L93 Difference]: Finished difference Result 7215 states and 10478 transitions. [2023-11-29 03:47:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 03:47:50,612 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.172413793103448) internal successors, (121), 25 states have internal predecessors, (121), 16 states have call successors, (23), 5 states have call predecessors, (23), 7 states have return successors, (23), 12 states have call predecessors, (23), 14 states have call successors, (23) Word has length 528 [2023-11-29 03:47:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:50,624 INFO L225 Difference]: With dead ends: 7215 [2023-11-29 03:47:50,624 INFO L226 Difference]: Without dead ends: 4244 [2023-11-29 03:47:50,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1077 GetRequests, 1023 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=430, Invalid=2020, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 03:47:50,632 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 134 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:50,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 671 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 03:47:50,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2023-11-29 03:47:51,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 4126. [2023-11-29 03:47:51,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 3255 states have (on average 1.0878648233486943) internal successors, (3541), 3236 states have internal predecessors, (3541), 614 states have call successors, (614), 206 states have call predecessors, (614), 252 states have return successors, (1562), 683 states have call predecessors, (1562), 600 states have call successors, (1562) [2023-11-29 03:47:51,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5717 transitions. [2023-11-29 03:47:51,130 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5717 transitions. Word has length 528 [2023-11-29 03:47:51,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:51,131 INFO L495 AbstractCegarLoop]: Abstraction has 4126 states and 5717 transitions. [2023-11-29 03:47:51,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.172413793103448) internal successors, (121), 25 states have internal predecessors, (121), 16 states have call successors, (23), 5 states have call predecessors, (23), 7 states have return successors, (23), 12 states have call predecessors, (23), 14 states have call successors, (23) [2023-11-29 03:47:51,131 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5717 transitions. [2023-11-29 03:47:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-11-29 03:47:51,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:51,136 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 25, 25, 25, 24, 24, 24, 24, 24, 24, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:47:51,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2023-11-29 03:47:51,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:51,337 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:51,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:51,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1172645171, now seen corresponding path program 5 times [2023-11-29 03:47:51,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:51,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651943324] [2023-11-29 03:47:51,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:51,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:51,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:51,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047991792] [2023-11-29 03:47:51,359 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:47:51,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:51,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:51,360 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:51,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2023-11-29 03:47:51,756 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-11-29 03:47:51,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:51,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:47:51,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 1560 proven. 114 refuted. 0 times theorem prover too weak. 5466 trivial. 0 not checked. [2023-11-29 03:47:52,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 754 proven. 157 refuted. 0 times theorem prover too weak. 6229 trivial. 0 not checked. [2023-11-29 03:47:52,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:52,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651943324] [2023-11-29 03:47:52,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:52,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047991792] [2023-11-29 03:47:52,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047991792] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:52,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:52,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2023-11-29 03:47:52,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630108315] [2023-11-29 03:47:52,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:52,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:47:52,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:52,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:47:52,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:47:52,930 INFO L87 Difference]: Start difference. First operand 4126 states and 5717 transitions. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 8 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) [2023-11-29 03:47:53,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:53,968 INFO L93 Difference]: Finished difference Result 7788 states and 11002 transitions. [2023-11-29 03:47:53,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:47:53,968 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 8 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) Word has length 533 [2023-11-29 03:47:53,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:53,982 INFO L225 Difference]: With dead ends: 7788 [2023-11-29 03:47:53,982 INFO L226 Difference]: Without dead ends: 4156 [2023-11-29 03:47:53,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 1046 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:47:53,993 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 37 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:53,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 278 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:47:53,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4156 states. [2023-11-29 03:47:54,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4156 to 3984. [2023-11-29 03:47:54,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3984 states, 3189 states have (on average 1.0768265914079649) internal successors, (3434), 3148 states have internal predecessors, (3434), 549 states have call successors, (549), 190 states have call predecessors, (549), 241 states have return successors, (1522), 645 states have call predecessors, (1522), 535 states have call successors, (1522) [2023-11-29 03:47:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3984 states to 3984 states and 5505 transitions. [2023-11-29 03:47:54,481 INFO L78 Accepts]: Start accepts. Automaton has 3984 states and 5505 transitions. Word has length 533 [2023-11-29 03:47:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:54,482 INFO L495 AbstractCegarLoop]: Abstraction has 3984 states and 5505 transitions. [2023-11-29 03:47:54,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 8 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) [2023-11-29 03:47:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3984 states and 5505 transitions. [2023-11-29 03:47:54,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-11-29 03:47:54,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:54,488 INFO L195 NwaCegarLoop]: trace histogram [52, 51, 28, 28, 28, 28, 28, 28, 28, 27, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:47:54,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2023-11-29 03:47:54,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:54,689 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:54,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:54,689 INFO L85 PathProgramCache]: Analyzing trace with hash 562951351, now seen corresponding path program 12 times [2023-11-29 03:47:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:54,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017576335] [2023-11-29 03:47:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:54,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:54,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:54,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715300068] [2023-11-29 03:47:54,717 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:47:54,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:54,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:54,718 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:54,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2023-11-29 03:47:55,068 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-29 03:47:55,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:47:55,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 03:47:55,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7984 backedges. 901 proven. 279 refuted. 0 times theorem prover too weak. 6804 trivial. 0 not checked. [2023-11-29 03:47:55,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:56,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:56,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017576335] [2023-11-29 03:47:56,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:56,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715300068] [2023-11-29 03:47:56,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715300068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:56,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:47:56,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-29 03:47:56,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063767777] [2023-11-29 03:47:56,092 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:56,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:47:56,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:56,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:47:56,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:47:56,094 INFO L87 Difference]: Start difference. First operand 3984 states and 5505 transitions. Second operand has 16 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 03:47:57,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:57,555 INFO L93 Difference]: Finished difference Result 4656 states and 6568 transitions. [2023-11-29 03:47:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 03:47:57,556 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) Word has length 546 [2023-11-29 03:47:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:57,569 INFO L225 Difference]: With dead ends: 4656 [2023-11-29 03:47:57,569 INFO L226 Difference]: Without dead ends: 4655 [2023-11-29 03:47:57,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:47:57,572 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 86 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:57,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 326 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:47:57,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4655 states. [2023-11-29 03:47:58,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4655 to 4452. [2023-11-29 03:47:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 3562 states have (on average 1.0738349241998877) internal successors, (3825), 3521 states have internal predecessors, (3825), 614 states have call successors, (614), 200 states have call predecessors, (614), 271 states have return successors, (1769), 730 states have call predecessors, (1769), 600 states have call successors, (1769) [2023-11-29 03:47:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 6208 transitions. [2023-11-29 03:47:58,122 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 6208 transitions. Word has length 546 [2023-11-29 03:47:58,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:58,122 INFO L495 AbstractCegarLoop]: Abstraction has 4452 states and 6208 transitions. [2023-11-29 03:47:58,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 03:47:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 6208 transitions. [2023-11-29 03:47:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2023-11-29 03:47:58,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:58,129 INFO L195 NwaCegarLoop]: trace histogram [58, 57, 33, 33, 33, 33, 33, 33, 33, 32, 25, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:47:58,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2023-11-29 03:47:58,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:58,330 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:47:58,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:58,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1419142895, now seen corresponding path program 13 times [2023-11-29 03:47:58,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:58,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116941510] [2023-11-29 03:47:58,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:58,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:58,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:47:58,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496271644] [2023-11-29 03:47:58,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:47:58,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:58,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:58,359 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:58,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2023-11-29 03:47:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:58,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:47:58,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:59,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10284 backedges. 951 proven. 201 refuted. 0 times theorem prover too weak. 9132 trivial. 0 not checked. [2023-11-29 03:47:59,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:47:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10284 backedges. 951 proven. 202 refuted. 0 times theorem prover too weak. 9131 trivial. 0 not checked. [2023-11-29 03:47:59,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:59,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116941510] [2023-11-29 03:47:59,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:47:59,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496271644] [2023-11-29 03:47:59,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496271644] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:47:59,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:47:59,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 16 [2023-11-29 03:47:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170210757] [2023-11-29 03:47:59,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:47:59,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:47:59,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:47:59,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:47:59,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:47:59,898 INFO L87 Difference]: Start difference. First operand 4452 states and 6208 transitions. Second operand has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 14 states have internal predecessors, (80), 9 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-29 03:48:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:01,425 INFO L93 Difference]: Finished difference Result 8546 states and 12141 transitions. [2023-11-29 03:48:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:48:01,425 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 14 states have internal predecessors, (80), 9 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) Word has length 615 [2023-11-29 03:48:01,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:01,440 INFO L225 Difference]: With dead ends: 8546 [2023-11-29 03:48:01,440 INFO L226 Difference]: Without dead ends: 5231 [2023-11-29 03:48:01,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1239 GetRequests, 1205 SyntacticMatches, 11 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:48:01,449 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 76 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:01,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 326 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:48:01,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2023-11-29 03:48:02,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 4806. [2023-11-29 03:48:02,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4806 states, 3863 states have (on average 1.0722236603675899) internal successors, (4142), 3812 states have internal predecessors, (4142), 654 states have call successors, (654), 209 states have call predecessors, (654), 284 states have return successors, (1857), 784 states have call predecessors, (1857), 640 states have call successors, (1857) [2023-11-29 03:48:02,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 6653 transitions. [2023-11-29 03:48:02,076 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 6653 transitions. Word has length 615 [2023-11-29 03:48:02,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:02,077 INFO L495 AbstractCegarLoop]: Abstraction has 4806 states and 6653 transitions. [2023-11-29 03:48:02,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 14 states have internal predecessors, (80), 9 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-29 03:48:02,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 6653 transitions. [2023-11-29 03:48:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-11-29 03:48:02,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:02,095 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 39, 39, 39, 39, 39, 39, 39, 39, 33, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:48:02,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2023-11-29 03:48:02,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:02,296 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:48:02,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:02,296 INFO L85 PathProgramCache]: Analyzing trace with hash -399622070, now seen corresponding path program 15 times [2023-11-29 03:48:02,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:02,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864712255] [2023-11-29 03:48:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:02,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:02,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:48:02,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794703278] [2023-11-29 03:48:02,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:48:02,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:02,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:02,336 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:02,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2023-11-29 03:48:02,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 03:48:02,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:02,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:48:02,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15729 backedges. 1691 proven. 92 refuted. 0 times theorem prover too weak. 13946 trivial. 0 not checked. [2023-11-29 03:48:03,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15729 backedges. 1691 proven. 94 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2023-11-29 03:48:04,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:04,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864712255] [2023-11-29 03:48:04,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:48:04,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794703278] [2023-11-29 03:48:04,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794703278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:04,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:48:04,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 24 [2023-11-29 03:48:04,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996296197] [2023-11-29 03:48:04,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:04,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 03:48:04,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:04,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 03:48:04,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:48:04,417 INFO L87 Difference]: Start difference. First operand 4806 states and 6653 transitions. Second operand has 24 states, 24 states have (on average 4.875) internal successors, (117), 23 states have internal predecessors, (117), 12 states have call successors, (25), 3 states have call predecessors, (25), 7 states have return successors, (25), 13 states have call predecessors, (25), 10 states have call successors, (25) [2023-11-29 03:48:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:06,155 INFO L93 Difference]: Finished difference Result 8252 states and 11711 transitions. [2023-11-29 03:48:06,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:48:06,155 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.875) internal successors, (117), 23 states have internal predecessors, (117), 12 states have call successors, (25), 3 states have call predecessors, (25), 7 states have return successors, (25), 13 states have call predecessors, (25), 10 states have call successors, (25) Word has length 760 [2023-11-29 03:48:06,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:06,169 INFO L225 Difference]: With dead ends: 8252 [2023-11-29 03:48:06,169 INFO L226 Difference]: Without dead ends: 4680 [2023-11-29 03:48:06,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1530 GetRequests, 1493 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 03:48:06,178 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 97 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:06,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 441 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:48:06,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2023-11-29 03:48:06,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4671. [2023-11-29 03:48:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4671 states, 3694 states have (on average 1.0646995127233352) internal successors, (3933), 3682 states have internal predecessors, (3933), 688 states have call successors, (688), 218 states have call predecessors, (688), 284 states have return successors, (1756), 770 states have call predecessors, (1756), 673 states have call successors, (1756) [2023-11-29 03:48:06,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4671 states to 4671 states and 6377 transitions. [2023-11-29 03:48:06,711 INFO L78 Accepts]: Start accepts. Automaton has 4671 states and 6377 transitions. Word has length 760 [2023-11-29 03:48:06,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:06,711 INFO L495 AbstractCegarLoop]: Abstraction has 4671 states and 6377 transitions. [2023-11-29 03:48:06,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.875) internal successors, (117), 23 states have internal predecessors, (117), 12 states have call successors, (25), 3 states have call predecessors, (25), 7 states have return successors, (25), 13 states have call predecessors, (25), 10 states have call successors, (25) [2023-11-29 03:48:06,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4671 states and 6377 transitions. [2023-11-29 03:48:06,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2023-11-29 03:48:06,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:06,720 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 40, 40, 40, 40, 40, 40, 40, 40, 33, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:48:06,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2023-11-29 03:48:06,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:06,921 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:48:06,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:06,921 INFO L85 PathProgramCache]: Analyzing trace with hash 262878898, now seen corresponding path program 16 times [2023-11-29 03:48:06,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:06,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357942955] [2023-11-29 03:48:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:06,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:06,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:48:06,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381221500] [2023-11-29 03:48:06,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:48:06,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:06,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:06,955 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:06,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2023-11-29 03:48:07,255 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:48:07,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:07,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:48:07,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16251 backedges. 5394 proven. 226 refuted. 0 times theorem prover too weak. 10631 trivial. 0 not checked. [2023-11-29 03:48:07,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 16251 backedges. 2264 proven. 528 refuted. 0 times theorem prover too weak. 13459 trivial. 0 not checked. [2023-11-29 03:48:09,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:09,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357942955] [2023-11-29 03:48:09,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:48:09,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381221500] [2023-11-29 03:48:09,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381221500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:09,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:48:09,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 23 [2023-11-29 03:48:09,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324600347] [2023-11-29 03:48:09,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:09,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:48:09,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:09,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:48:09,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:48:09,585 INFO L87 Difference]: Start difference. First operand 4671 states and 6377 transitions. Second operand has 23 states, 21 states have (on average 6.428571428571429) internal successors, (135), 23 states have internal predecessors, (135), 16 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (32), 13 states have call predecessors, (32), 16 states have call successors, (32) [2023-11-29 03:48:11,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:11,623 INFO L93 Difference]: Finished difference Result 8239 states and 11605 transitions. [2023-11-29 03:48:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 03:48:11,624 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.428571428571429) internal successors, (135), 23 states have internal predecessors, (135), 16 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (32), 13 states have call predecessors, (32), 16 states have call successors, (32) Word has length 770 [2023-11-29 03:48:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:11,640 INFO L225 Difference]: With dead ends: 8239 [2023-11-29 03:48:11,640 INFO L226 Difference]: Without dead ends: 4787 [2023-11-29 03:48:11,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1558 GetRequests, 1513 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 03:48:11,652 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 181 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:11,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 489 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:48:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4787 states. [2023-11-29 03:48:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4787 to 4290. [2023-11-29 03:48:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 3378 states have (on average 1.0683836589698046) internal successors, (3609), 3368 states have internal predecessors, (3609), 639 states have call successors, (639), 213 states have call predecessors, (639), 268 states have return successors, (1588), 708 states have call predecessors, (1588), 625 states have call successors, (1588) [2023-11-29 03:48:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 5836 transitions. [2023-11-29 03:48:12,218 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 5836 transitions. Word has length 770 [2023-11-29 03:48:12,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:12,219 INFO L495 AbstractCegarLoop]: Abstraction has 4290 states and 5836 transitions. [2023-11-29 03:48:12,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.428571428571429) internal successors, (135), 23 states have internal predecessors, (135), 16 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (32), 13 states have call predecessors, (32), 16 states have call successors, (32) [2023-11-29 03:48:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 5836 transitions. [2023-11-29 03:48:12,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2023-11-29 03:48:12,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:12,226 INFO L195 NwaCegarLoop]: trace histogram [57, 56, 29, 29, 28, 28, 28, 28, 28, 28, 28, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:48:12,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2023-11-29 03:48:12,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2023-11-29 03:48:12,427 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:48:12,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1481276691, now seen corresponding path program 6 times [2023-11-29 03:48:12,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:12,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771401474] [2023-11-29 03:48:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:12,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:12,455 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:48:12,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677287058] [2023-11-29 03:48:12,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:48:12,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:12,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:12,457 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:12,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2023-11-29 03:48:12,648 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 03:48:12,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:12,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:48:12,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:12,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9400 backedges. 204 proven. 12 refuted. 0 times theorem prover too weak. 9184 trivial. 0 not checked. [2023-11-29 03:48:12,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9400 backedges. 204 proven. 12 refuted. 0 times theorem prover too weak. 9184 trivial. 0 not checked. [2023-11-29 03:48:13,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:13,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771401474] [2023-11-29 03:48:13,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:48:13,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677287058] [2023-11-29 03:48:13,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677287058] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:13,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:48:13,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 03:48:13,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711536092] [2023-11-29 03:48:13,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:13,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:48:13,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:13,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:48:13,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:48:13,544 INFO L87 Difference]: Start difference. First operand 4290 states and 5836 transitions. Second operand has 16 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 03:48:15,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:15,045 INFO L93 Difference]: Finished difference Result 4335 states and 5880 transitions. [2023-11-29 03:48:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:48:15,046 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 606 [2023-11-29 03:48:15,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:15,062 INFO L225 Difference]: With dead ends: 4335 [2023-11-29 03:48:15,062 INFO L226 Difference]: Without dead ends: 4334 [2023-11-29 03:48:15,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1223 GetRequests, 1200 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:48:15,065 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 108 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:15,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 506 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:48:15,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2023-11-29 03:48:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 4331. [2023-11-29 03:48:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 3412 states have (on average 1.0679953106682298) internal successors, (3644), 3400 states have internal predecessors, (3644), 640 states have call successors, (640), 215 states have call predecessors, (640), 275 states have return successors, (1595), 715 states have call predecessors, (1595), 626 states have call successors, (1595) [2023-11-29 03:48:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 5879 transitions. [2023-11-29 03:48:15,579 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 5879 transitions. Word has length 606 [2023-11-29 03:48:15,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:15,580 INFO L495 AbstractCegarLoop]: Abstraction has 4331 states and 5879 transitions. [2023-11-29 03:48:15,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 03:48:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 5879 transitions. [2023-11-29 03:48:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2023-11-29 03:48:15,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:15,591 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 43, 43, 43, 43, 43, 43, 43, 43, 36, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:48:15,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2023-11-29 03:48:15,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:15,792 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:48:15,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:15,792 INFO L85 PathProgramCache]: Analyzing trace with hash -456092996, now seen corresponding path program 17 times [2023-11-29 03:48:15,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:15,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334030032] [2023-11-29 03:48:15,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:15,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:15,821 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:48:15,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387256223] [2023-11-29 03:48:15,821 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:48:15,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:15,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:15,822 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:15,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2023-11-29 03:48:16,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-11-29 03:48:16,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:16,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:48:16,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 19016 backedges. 2531 proven. 110 refuted. 0 times theorem prover too weak. 16375 trivial. 0 not checked. [2023-11-29 03:48:16,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 19016 backedges. 2531 proven. 118 refuted. 0 times theorem prover too weak. 16367 trivial. 0 not checked. [2023-11-29 03:48:17,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:17,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334030032] [2023-11-29 03:48:17,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:48:17,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387256223] [2023-11-29 03:48:17,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387256223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:17,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:48:17,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 17 [2023-11-29 03:48:17,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120181762] [2023-11-29 03:48:17,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:17,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:48:17,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:17,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:48:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:48:17,710 INFO L87 Difference]: Start difference. First operand 4331 states and 5879 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 10 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (18), 9 states have call predecessors, (18), 10 states have call successors, (18) [2023-11-29 03:48:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:18,513 INFO L93 Difference]: Finished difference Result 7449 states and 10388 transitions. [2023-11-29 03:48:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:48:18,514 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 10 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (18), 9 states have call predecessors, (18), 10 states have call successors, (18) Word has length 833 [2023-11-29 03:48:18,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:18,525 INFO L225 Difference]: With dead ends: 7449 [2023-11-29 03:48:18,526 INFO L226 Difference]: Without dead ends: 4342 [2023-11-29 03:48:18,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1672 GetRequests, 1643 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:48:18,534 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 85 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:18,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 374 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:48:18,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2023-11-29 03:48:18,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 4305. [2023-11-29 03:48:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4305 states, 3391 states have (on average 1.067826599823061) internal successors, (3621), 3381 states have internal predecessors, (3621), 635 states have call successors, (635), 215 states have call predecessors, (635), 275 states have return successors, (1585), 708 states have call predecessors, (1585), 620 states have call successors, (1585) [2023-11-29 03:48:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4305 states to 4305 states and 5841 transitions. [2023-11-29 03:48:19,013 INFO L78 Accepts]: Start accepts. Automaton has 4305 states and 5841 transitions. Word has length 833 [2023-11-29 03:48:19,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:19,013 INFO L495 AbstractCegarLoop]: Abstraction has 4305 states and 5841 transitions. [2023-11-29 03:48:19,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 10 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (18), 9 states have call predecessors, (18), 10 states have call successors, (18) [2023-11-29 03:48:19,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4305 states and 5841 transitions. [2023-11-29 03:48:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2023-11-29 03:48:19,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:19,024 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 44, 44, 44, 44, 44, 44, 44, 44, 36, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:48:19,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2023-11-29 03:48:19,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:19,225 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:48:19,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:19,226 INFO L85 PathProgramCache]: Analyzing trace with hash -12176924, now seen corresponding path program 18 times [2023-11-29 03:48:19,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:19,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877293356] [2023-11-29 03:48:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:19,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:19,262 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:48:19,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922056369] [2023-11-29 03:48:19,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:48:19,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:19,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:19,264 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:19,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2023-11-29 03:48:19,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-11-29 03:48:19,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:19,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:48:19,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 19590 backedges. 715 proven. 2 refuted. 0 times theorem prover too weak. 18873 trivial. 0 not checked. [2023-11-29 03:48:19,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:24,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:24,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877293356] [2023-11-29 03:48:24,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:48:24,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922056369] [2023-11-29 03:48:24,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922056369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:48:24,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:48:24,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 03:48:24,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331336751] [2023-11-29 03:48:24,705 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:24,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:48:24,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:24,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:48:24,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2023-11-29 03:48:24,707 INFO L87 Difference]: Start difference. First operand 4305 states and 5841 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 03:48:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:25,686 INFO L93 Difference]: Finished difference Result 4314 states and 5850 transitions. [2023-11-29 03:48:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:48:25,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 843 [2023-11-29 03:48:25,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:25,701 INFO L225 Difference]: With dead ends: 4314 [2023-11-29 03:48:25,701 INFO L226 Difference]: Without dead ends: 4305 [2023-11-29 03:48:25,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 857 GetRequests, 841 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2023-11-29 03:48:25,704 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 31 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:25,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 168 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:48:25,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4305 states. [2023-11-29 03:48:26,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4305 to 4142. [2023-11-29 03:48:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4142 states, 3264 states have (on average 1.0655637254901962) internal successors, (3478), 3260 states have internal predecessors, (3478), 600 states have call successors, (600), 215 states have call predecessors, (600), 274 states have return successors, (1481), 666 states have call predecessors, (1481), 585 states have call successors, (1481) [2023-11-29 03:48:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4142 states to 4142 states and 5559 transitions. [2023-11-29 03:48:26,244 INFO L78 Accepts]: Start accepts. Automaton has 4142 states and 5559 transitions. Word has length 843 [2023-11-29 03:48:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:26,245 INFO L495 AbstractCegarLoop]: Abstraction has 4142 states and 5559 transitions. [2023-11-29 03:48:26,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 03:48:26,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4142 states and 5559 transitions. [2023-11-29 03:48:26,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-11-29 03:48:26,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:26,253 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 48, 48, 48, 48, 48, 48, 48, 48, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:26,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2023-11-29 03:48:26,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:26,454 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:48:26,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:26,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1468302945, now seen corresponding path program 3 times [2023-11-29 03:48:26,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:26,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924655982] [2023-11-29 03:48:26,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:26,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:26,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:48:26,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464417888] [2023-11-29 03:48:26,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:48:26,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:26,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:26,491 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:26,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2023-11-29 03:48:26,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-29 03:48:26,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:26,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 03:48:26,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 17566 backedges. 2152 proven. 65 refuted. 0 times theorem prover too weak. 15349 trivial. 0 not checked. [2023-11-29 03:48:27,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17566 backedges. 2152 proven. 93 refuted. 0 times theorem prover too weak. 15321 trivial. 0 not checked. [2023-11-29 03:48:30,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:30,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924655982] [2023-11-29 03:48:30,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:48:30,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464417888] [2023-11-29 03:48:30,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464417888] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:30,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:48:30,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 22 [2023-11-29 03:48:30,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934122894] [2023-11-29 03:48:30,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:30,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:48:30,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:48:30,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:48:30,142 INFO L87 Difference]: Start difference. First operand 4142 states and 5559 transitions. Second operand has 23 states, 22 states have (on average 4.954545454545454) internal successors, (109), 23 states have internal predecessors, (109), 10 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (24), 13 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-29 03:48:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:32,112 INFO L93 Difference]: Finished difference Result 5855 states and 8619 transitions. [2023-11-29 03:48:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 03:48:32,112 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.954545454545454) internal successors, (109), 23 states have internal predecessors, (109), 10 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (24), 13 states have call predecessors, (24), 10 states have call successors, (24) Word has length 748 [2023-11-29 03:48:32,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:32,135 INFO L225 Difference]: With dead ends: 5855 [2023-11-29 03:48:32,135 INFO L226 Difference]: Without dead ends: 5854 [2023-11-29 03:48:32,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1513 GetRequests, 1470 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 03:48:32,140 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 85 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:32,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 329 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:48:32,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5854 states. [2023-11-29 03:48:32,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5854 to 4295. [2023-11-29 03:48:32,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4295 states, 3386 states have (on average 1.0646780862374483) internal successors, (3605), 3381 states have internal predecessors, (3605), 617 states have call successors, (617), 219 states have call predecessors, (617), 288 states have return successors, (1571), 694 states have call predecessors, (1571), 602 states have call successors, (1571) [2023-11-29 03:48:32,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 5793 transitions. [2023-11-29 03:48:32,671 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 5793 transitions. Word has length 748 [2023-11-29 03:48:32,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:32,672 INFO L495 AbstractCegarLoop]: Abstraction has 4295 states and 5793 transitions. [2023-11-29 03:48:32,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.954545454545454) internal successors, (109), 23 states have internal predecessors, (109), 10 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (24), 13 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-29 03:48:32,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 5793 transitions. [2023-11-29 03:48:32,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2023-11-29 03:48:32,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:32,682 INFO L195 NwaCegarLoop]: trace histogram [83, 82, 48, 48, 48, 48, 48, 48, 48, 47, 35, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:48:32,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2023-11-29 03:48:32,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:32,883 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:48:32,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:32,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1533210450, now seen corresponding path program 14 times [2023-11-29 03:48:32,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:32,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381102816] [2023-11-29 03:48:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:32,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:32,914 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:48:32,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765871673] [2023-11-29 03:48:32,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:48:32,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:32,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:32,916 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:32,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2023-11-29 03:48:33,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:48:33,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:33,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:48:33,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 21413 backedges. 1449 proven. 347 refuted. 0 times theorem prover too weak. 19617 trivial. 0 not checked. [2023-11-29 03:48:33,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 21413 backedges. 1449 proven. 348 refuted. 0 times theorem prover too weak. 19616 trivial. 0 not checked. [2023-11-29 03:48:34,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:34,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381102816] [2023-11-29 03:48:34,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:48:34,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765871673] [2023-11-29 03:48:34,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765871673] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:34,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:48:34,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 16 [2023-11-29 03:48:34,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738291489] [2023-11-29 03:48:34,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:34,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:48:34,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:34,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:48:34,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:48:34,654 INFO L87 Difference]: Start difference. First operand 4295 states and 5793 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 14 states have internal predecessors, (86), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 9 states have call successors, (14) [2023-11-29 03:48:35,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:35,751 INFO L93 Difference]: Finished difference Result 7722 states and 10740 transitions. [2023-11-29 03:48:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:48:35,751 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 14 states have internal predecessors, (86), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 9 states have call successors, (14) Word has length 870 [2023-11-29 03:48:35,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:35,764 INFO L225 Difference]: With dead ends: 7722 [2023-11-29 03:48:35,764 INFO L226 Difference]: Without dead ends: 4769 [2023-11-29 03:48:35,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1749 GetRequests, 1715 SyntacticMatches, 11 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:48:35,771 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 59 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:35,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 398 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:48:35,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4769 states. [2023-11-29 03:48:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4769 to 4749. [2023-11-29 03:48:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 3732 states have (on average 1.0742229367631297) internal successors, (4009), 3727 states have internal predecessors, (4009), 700 states have call successors, (700), 237 states have call predecessors, (700), 313 states have return successors, (1802), 784 states have call predecessors, (1802), 686 states have call successors, (1802) [2023-11-29 03:48:36,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 6511 transitions. [2023-11-29 03:48:36,292 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 6511 transitions. Word has length 870 [2023-11-29 03:48:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:36,292 INFO L495 AbstractCegarLoop]: Abstraction has 4749 states and 6511 transitions. [2023-11-29 03:48:36,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 14 states have internal predecessors, (86), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 9 states have call successors, (14) [2023-11-29 03:48:36,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 6511 transitions. [2023-11-29 03:48:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2023-11-29 03:48:36,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:36,297 INFO L195 NwaCegarLoop]: trace histogram [68, 67, 46, 46, 46, 46, 46, 46, 46, 45, 22, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:36,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2023-11-29 03:48:36,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:36,498 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:48:36,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:36,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1151686107, now seen corresponding path program 18 times [2023-11-29 03:48:36,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:36,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316715235] [2023-11-29 03:48:36,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:36,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:36,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:48:36,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350376657] [2023-11-29 03:48:36,519 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:48:36,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:36,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:36,520 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:36,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2023-11-29 03:48:37,235 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-11-29 03:48:37,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:37,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-29 03:48:37,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:38,538 INFO L134 CoverageAnalysis]: Checked inductivity of 15651 backedges. 2894 proven. 307 refuted. 0 times theorem prover too weak. 12450 trivial. 0 not checked. [2023-11-29 03:48:38,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:39,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:39,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316715235] [2023-11-29 03:48:39,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:48:39,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350376657] [2023-11-29 03:48:39,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350376657] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:48:39,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:48:39,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2023-11-29 03:48:39,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556422539] [2023-11-29 03:48:39,850 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:39,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 03:48:39,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:39,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 03:48:39,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1527, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 03:48:39,852 INFO L87 Difference]: Start difference. First operand 4749 states and 6511 transitions. Second operand has 40 states, 38 states have (on average 2.973684210526316) internal successors, (113), 38 states have internal predecessors, (113), 14 states have call successors, (17), 3 states have call predecessors, (17), 8 states have return successors, (18), 15 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-29 03:48:43,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:43,641 INFO L93 Difference]: Finished difference Result 7220 states and 10927 transitions. [2023-11-29 03:48:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 03:48:43,642 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.973684210526316) internal successors, (113), 38 states have internal predecessors, (113), 14 states have call successors, (17), 3 states have call predecessors, (17), 8 states have return successors, (18), 15 states have call predecessors, (18), 12 states have call successors, (18) Word has length 702 [2023-11-29 03:48:43,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:43,660 INFO L225 Difference]: With dead ends: 7220 [2023-11-29 03:48:43,660 INFO L226 Difference]: Without dead ends: 7160 [2023-11-29 03:48:43,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=490, Invalid=3542, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 03:48:43,664 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 227 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:43,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 721 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 03:48:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7160 states. [2023-11-29 03:48:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7160 to 6369. [2023-11-29 03:48:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6369 states, 5012 states have (on average 1.0885873902633678) internal successors, (5456), 5007 states have internal predecessors, (5456), 976 states have call successors, (976), 292 states have call predecessors, (976), 377 states have return successors, (2597), 1069 states have call predecessors, (2597), 968 states have call successors, (2597) [2023-11-29 03:48:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6369 states to 6369 states and 9029 transitions. [2023-11-29 03:48:44,416 INFO L78 Accepts]: Start accepts. Automaton has 6369 states and 9029 transitions. Word has length 702 [2023-11-29 03:48:44,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:44,416 INFO L495 AbstractCegarLoop]: Abstraction has 6369 states and 9029 transitions. [2023-11-29 03:48:44,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.973684210526316) internal successors, (113), 38 states have internal predecessors, (113), 14 states have call successors, (17), 3 states have call predecessors, (17), 8 states have return successors, (18), 15 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-29 03:48:44,417 INFO L276 IsEmpty]: Start isEmpty. Operand 6369 states and 9029 transitions. [2023-11-29 03:48:44,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2023-11-29 03:48:44,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:44,423 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 51, 51, 51, 51, 51, 51, 51, 50, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:44,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2023-11-29 03:48:44,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2023-11-29 03:48:44,623 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:48:44,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1278942951, now seen corresponding path program 19 times [2023-11-29 03:48:44,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:44,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677422636] [2023-11-29 03:48:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:44,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:44,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:48:44,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [457766090] [2023-11-29 03:48:44,645 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:48:44,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:44,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:44,646 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:44,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2023-11-29 03:48:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:45,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 03:48:45,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 19107 backedges. 10573 proven. 38 refuted. 0 times theorem prover too weak. 8496 trivial. 0 not checked. [2023-11-29 03:48:45,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 19107 backedges. 1915 proven. 1020 refuted. 0 times theorem prover too weak. 16172 trivial. 0 not checked. [2023-11-29 03:48:48,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:48,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677422636] [2023-11-29 03:48:48,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:48:48,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457766090] [2023-11-29 03:48:48,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457766090] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:48,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:48:48,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 39 [2023-11-29 03:48:48,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985641511] [2023-11-29 03:48:48,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:48,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 03:48:48,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:48,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 03:48:48,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1278, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 03:48:48,578 INFO L87 Difference]: Start difference. First operand 6369 states and 9029 transitions. Second operand has 39 states, 39 states have (on average 4.333333333333333) internal successors, (169), 39 states have internal predecessors, (169), 21 states have call successors, (36), 2 states have call predecessors, (36), 8 states have return successors, (39), 19 states have call predecessors, (39), 21 states have call successors, (39) [2023-11-29 03:48:50,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:50,802 INFO L93 Difference]: Finished difference Result 12762 states and 18651 transitions. [2023-11-29 03:48:50,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 03:48:50,803 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.333333333333333) internal successors, (169), 39 states have internal predecessors, (169), 21 states have call successors, (36), 2 states have call predecessors, (36), 8 states have return successors, (39), 19 states have call predecessors, (39), 21 states have call successors, (39) Word has length 766 [2023-11-29 03:48:50,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:50,824 INFO L225 Difference]: With dead ends: 12762 [2023-11-29 03:48:50,824 INFO L226 Difference]: Without dead ends: 6482 [2023-11-29 03:48:50,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1548 GetRequests, 1487 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=463, Invalid=2617, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 03:48:50,841 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 118 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:50,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 426 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:48:50,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2023-11-29 03:48:51,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 6122. [2023-11-29 03:48:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 4816 states have (on average 1.0903239202657806) internal successors, (5251), 4812 states have internal predecessors, (5251), 946 states have call successors, (946), 285 states have call predecessors, (946), 356 states have return successors, (2446), 1024 states have call predecessors, (2446), 938 states have call successors, (2446) [2023-11-29 03:48:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 8643 transitions. [2023-11-29 03:48:51,584 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 8643 transitions. Word has length 766 [2023-11-29 03:48:51,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:51,585 INFO L495 AbstractCegarLoop]: Abstraction has 6122 states and 8643 transitions. [2023-11-29 03:48:51,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.333333333333333) internal successors, (169), 39 states have internal predecessors, (169), 21 states have call successors, (36), 2 states have call predecessors, (36), 8 states have return successors, (39), 19 states have call predecessors, (39), 21 states have call successors, (39) [2023-11-29 03:48:51,585 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 8643 transitions. [2023-11-29 03:48:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-11-29 03:48:51,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:51,591 INFO L195 NwaCegarLoop]: trace histogram [76, 75, 52, 52, 52, 52, 52, 52, 52, 51, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:51,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2023-11-29 03:48:51,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2023-11-29 03:48:51,791 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:48:51,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2012486079, now seen corresponding path program 20 times [2023-11-29 03:48:51,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:51,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009384664] [2023-11-29 03:48:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:51,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:51,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:48:51,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324084308] [2023-11-29 03:48:51,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:48:51,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:51,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:51,820 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:51,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2023-11-29 03:48:52,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:48:52,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:52,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 03:48:52,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 19711 backedges. 10710 proven. 263 refuted. 0 times theorem prover too weak. 8738 trivial. 0 not checked. [2023-11-29 03:48:52,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 19711 backedges. 1698 proven. 1284 refuted. 0 times theorem prover too weak. 16729 trivial. 0 not checked. [2023-11-29 03:48:54,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:54,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009384664] [2023-11-29 03:48:54,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:48:54,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324084308] [2023-11-29 03:48:54,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324084308] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:54,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:48:54,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 27 [2023-11-29 03:48:54,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126129194] [2023-11-29 03:48:54,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:54,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:48:54,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:54,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:48:54,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:48:54,938 INFO L87 Difference]: Start difference. First operand 6122 states and 8643 transitions. Second operand has 27 states, 25 states have (on average 5.28) internal successors, (132), 27 states have internal predecessors, (132), 16 states have call successors, (28), 2 states have call predecessors, (28), 8 states have return successors, (31), 12 states have call predecessors, (31), 16 states have call successors, (31) [2023-11-29 03:48:56,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:56,894 INFO L93 Difference]: Finished difference Result 11549 states and 16793 transitions. [2023-11-29 03:48:56,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 03:48:56,894 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 5.28) internal successors, (132), 27 states have internal predecessors, (132), 16 states have call successors, (28), 2 states have call predecessors, (28), 8 states have return successors, (31), 12 states have call predecessors, (31), 16 states have call successors, (31) Word has length 776 [2023-11-29 03:48:56,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:56,910 INFO L225 Difference]: With dead ends: 11549 [2023-11-29 03:48:56,910 INFO L226 Difference]: Without dead ends: 5721 [2023-11-29 03:48:56,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1563 GetRequests, 1509 SyntacticMatches, 17 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=246, Invalid=1236, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 03:48:56,925 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 99 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:56,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 579 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:48:56,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2023-11-29 03:48:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 5261. [2023-11-29 03:48:57,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 4124 states have (on average 1.081231813773036) internal successors, (4459), 4119 states have internal predecessors, (4459), 807 states have call successors, (807), 256 states have call predecessors, (807), 326 states have return successors, (1957), 885 states have call predecessors, (1957), 797 states have call successors, (1957) [2023-11-29 03:48:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7223 transitions. [2023-11-29 03:48:57,553 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 7223 transitions. Word has length 776 [2023-11-29 03:48:57,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:57,553 INFO L495 AbstractCegarLoop]: Abstraction has 5261 states and 7223 transitions. [2023-11-29 03:48:57,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 5.28) internal successors, (132), 27 states have internal predecessors, (132), 16 states have call successors, (28), 2 states have call predecessors, (28), 8 states have return successors, (31), 12 states have call predecessors, (31), 16 states have call successors, (31) [2023-11-29 03:48:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 7223 transitions. [2023-11-29 03:48:57,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-29 03:48:57,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:57,560 INFO L195 NwaCegarLoop]: trace histogram [77, 76, 53, 53, 53, 53, 53, 53, 53, 52, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:57,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2023-11-29 03:48:57,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:57,760 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:48:57,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:57,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1531718425, now seen corresponding path program 21 times [2023-11-29 03:48:57,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:57,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084920539] [2023-11-29 03:48:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:57,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:57,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:48:57,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445667763] [2023-11-29 03:48:57,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:48:57,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:57,786 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:57,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2023-11-29 03:48:58,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-29 03:48:58,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:48:58,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-29 03:48:58,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 20325 backedges. 3287 proven. 119 refuted. 0 times theorem prover too weak. 16919 trivial. 0 not checked. [2023-11-29 03:48:58,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:02,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:49:02,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084920539] [2023-11-29 03:49:02,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:49:02,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445667763] [2023-11-29 03:49:02,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445667763] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:49:02,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:49:02,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-29 03:49:02,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627853713] [2023-11-29 03:49:02,957 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 03:49:02,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:49:02,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:49:02,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:49:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:49:02,957 INFO L87 Difference]: Start difference. First operand 5261 states and 7223 transitions. Second operand has 20 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 20 states have internal predecessors, (69), 4 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (13), 8 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 03:49:04,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:49:04,705 INFO L93 Difference]: Finished difference Result 5486 states and 8171 transitions. [2023-11-29 03:49:04,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 03:49:04,705 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 20 states have internal predecessors, (69), 4 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (13), 8 states have call predecessors, (13), 4 states have call successors, (13) Word has length 786 [2023-11-29 03:49:04,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:49:04,721 INFO L225 Difference]: With dead ends: 5486 [2023-11-29 03:49:04,721 INFO L226 Difference]: Without dead ends: 5476 [2023-11-29 03:49:04,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:49:04,725 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 24 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:49:04,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 432 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:49:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2023-11-29 03:49:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 5260. [2023-11-29 03:49:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 4124 states have (on average 1.0807468477206597) internal successors, (4457), 4118 states have internal predecessors, (4457), 804 states have call successors, (804), 255 states have call predecessors, (804), 328 states have return successors, (1957), 886 states have call predecessors, (1957), 796 states have call successors, (1957) [2023-11-29 03:49:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 7218 transitions. [2023-11-29 03:49:05,365 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 7218 transitions. Word has length 786 [2023-11-29 03:49:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:49:05,365 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 7218 transitions. [2023-11-29 03:49:05,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 20 states have internal predecessors, (69), 4 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (13), 8 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 03:49:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 7218 transitions. [2023-11-29 03:49:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2023-11-29 03:49:05,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:49:05,371 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 52, 52, 52, 52, 52, 52, 52, 52, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:49:05,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2023-11-29 03:49:05,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2023-11-29 03:49:05,572 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:49:05,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:05,572 INFO L85 PathProgramCache]: Analyzing trace with hash -929900591, now seen corresponding path program 4 times [2023-11-29 03:49:05,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:49:05,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912117673] [2023-11-29 03:49:05,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:05,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:49:05,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:49:05,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2230553] [2023-11-29 03:49:05,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:49:05,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:05,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:49:05,597 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:49:05,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2023-11-29 03:49:05,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:49:05,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:49:05,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 03:49:05,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:49:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 19930 backedges. 10233 proven. 417 refuted. 0 times theorem prover too weak. 9280 trivial. 0 not checked. [2023-11-29 03:49:06,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 19930 backedges. 3957 proven. 1750 refuted. 0 times theorem prover too weak. 14223 trivial. 0 not checked. [2023-11-29 03:49:12,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:49:12,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912117673] [2023-11-29 03:49:12,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:49:12,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2230553] [2023-11-29 03:49:12,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2230553] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:49:12,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:49:12,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 31] total 35 [2023-11-29 03:49:12,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373565808] [2023-11-29 03:49:12,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:49:12,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 03:49:12,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:49:12,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 03:49:12,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 03:49:12,403 INFO L87 Difference]: Start difference. First operand 5260 states and 7218 transitions. Second operand has 35 states, 33 states have (on average 5.2727272727272725) internal successors, (174), 35 states have internal predecessors, (174), 20 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (40), 17 states have call predecessors, (40), 20 states have call successors, (40) [2023-11-29 03:49:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:49:14,323 INFO L93 Difference]: Finished difference Result 10623 states and 15184 transitions. [2023-11-29 03:49:14,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:49:14,324 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 5.2727272727272725) internal successors, (174), 35 states have internal predecessors, (174), 20 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (40), 17 states have call predecessors, (40), 20 states have call successors, (40) Word has length 788 [2023-11-29 03:49:14,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:49:14,338 INFO L225 Difference]: With dead ends: 10623 [2023-11-29 03:49:14,338 INFO L226 Difference]: Without dead ends: 5748 [2023-11-29 03:49:14,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1589 GetRequests, 1529 SyntacticMatches, 15 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=376, Invalid=1786, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 03:49:14,348 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 164 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:49:14,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 573 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:49:14,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2023-11-29 03:49:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 5275. [2023-11-29 03:49:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 4136 states have (on average 1.0805125725338491) internal successors, (4469), 4130 states have internal predecessors, (4469), 804 states have call successors, (804), 255 states have call predecessors, (804), 331 states have return successors, (2028), 889 states have call predecessors, (2028), 796 states have call successors, (2028) [2023-11-29 03:49:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 7301 transitions. [2023-11-29 03:49:14,949 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 7301 transitions. Word has length 788 [2023-11-29 03:49:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:49:14,949 INFO L495 AbstractCegarLoop]: Abstraction has 5275 states and 7301 transitions. [2023-11-29 03:49:14,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 5.2727272727272725) internal successors, (174), 35 states have internal predecessors, (174), 20 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (40), 17 states have call predecessors, (40), 20 states have call successors, (40) [2023-11-29 03:49:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 7301 transitions. [2023-11-29 03:49:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-11-29 03:49:14,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:49:14,956 INFO L195 NwaCegarLoop]: trace histogram [75, 75, 51, 51, 51, 51, 51, 51, 51, 51, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:49:14,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2023-11-29 03:49:15,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2023-11-29 03:49:15,156 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:49:15,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash -982059591, now seen corresponding path program 5 times [2023-11-29 03:49:15,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:49:15,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520716784] [2023-11-29 03:49:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:15,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:49:15,184 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:49:15,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272288358] [2023-11-29 03:49:15,184 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:49:15,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:15,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:49:15,185 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:49:15,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2023-11-29 03:49:15,934 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-11-29 03:49:15,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:49:15,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 03:49:15,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:49:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 19324 backedges. 8986 proven. 1890 refuted. 0 times theorem prover too weak. 8448 trivial. 0 not checked. [2023-11-29 03:49:16,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 19324 backedges. 2832 proven. 3335 refuted. 0 times theorem prover too weak. 13157 trivial. 0 not checked. [2023-11-29 03:49:23,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:49:23,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520716784] [2023-11-29 03:49:23,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:49:23,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272288358] [2023-11-29 03:49:23,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272288358] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:49:23,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:49:23,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 36] total 44 [2023-11-29 03:49:23,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802431973] [2023-11-29 03:49:23,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:49:23,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 03:49:23,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:49:23,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 03:49:23,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1725, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 03:49:23,081 INFO L87 Difference]: Start difference. First operand 5275 states and 7301 transitions. Second operand has 44 states, 42 states have (on average 4.976190476190476) internal successors, (209), 44 states have internal predecessors, (209), 26 states have call successors, (44), 2 states have call predecessors, (44), 16 states have return successors, (52), 26 states have call predecessors, (52), 26 states have call successors, (52) [2023-11-29 03:49:29,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:49:29,995 INFO L93 Difference]: Finished difference Result 10823 states and 15831 transitions. [2023-11-29 03:49:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-29 03:49:29,996 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 4.976190476190476) internal successors, (209), 44 states have internal predecessors, (209), 26 states have call successors, (44), 2 states have call predecessors, (44), 16 states have return successors, (52), 26 states have call predecessors, (52), 26 states have call successors, (52) Word has length 778 [2023-11-29 03:49:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:49:30,015 INFO L225 Difference]: With dead ends: 10823 [2023-11-29 03:49:30,015 INFO L226 Difference]: Without dead ends: 5738 [2023-11-29 03:49:30,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1619 GetRequests, 1500 SyntacticMatches, 22 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2441 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1203, Invalid=8499, Unknown=0, NotChecked=0, Total=9702 [2023-11-29 03:49:30,031 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 375 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 3766 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 4091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 3766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:49:30,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 1255 Invalid, 4091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 3766 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 03:49:30,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5738 states. [2023-11-29 03:49:30,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5738 to 4996. [2023-11-29 03:49:30,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4996 states, 3938 states have (on average 1.069324530218385) internal successors, (4211), 3920 states have internal predecessors, (4211), 749 states have call successors, (749), 297 states have call predecessors, (749), 305 states have return successors, (1830), 778 states have call predecessors, (1830), 742 states have call successors, (1830) [2023-11-29 03:49:30,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4996 states to 4996 states and 6790 transitions. [2023-11-29 03:49:30,641 INFO L78 Accepts]: Start accepts. Automaton has 4996 states and 6790 transitions. Word has length 778 [2023-11-29 03:49:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:49:30,642 INFO L495 AbstractCegarLoop]: Abstraction has 4996 states and 6790 transitions. [2023-11-29 03:49:30,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 4.976190476190476) internal successors, (209), 44 states have internal predecessors, (209), 26 states have call successors, (44), 2 states have call predecessors, (44), 16 states have return successors, (52), 26 states have call predecessors, (52), 26 states have call successors, (52) [2023-11-29 03:49:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4996 states and 6790 transitions. [2023-11-29 03:49:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2023-11-29 03:49:30,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:49:30,649 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 51, 51, 51, 51, 51, 51, 51, 51, 32, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 7, 7, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:49:30,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2023-11-29 03:49:30,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2023-11-29 03:49:30,850 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:49:30,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1340891427, now seen corresponding path program 3 times [2023-11-29 03:49:30,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:49:30,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80732596] [2023-11-29 03:49:30,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:30,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:49:30,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:49:30,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038448418] [2023-11-29 03:49:30,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:49:30,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:30,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:49:30,882 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:49:30,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2023-11-29 03:49:31,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 03:49:31,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:49:31,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:49:31,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:49:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 22274 backedges. 230 proven. 17 refuted. 0 times theorem prover too weak. 22027 trivial. 0 not checked. [2023-11-29 03:49:31,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 22274 backedges. 230 proven. 17 refuted. 0 times theorem prover too weak. 22027 trivial. 0 not checked. [2023-11-29 03:49:32,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:49:32,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80732596] [2023-11-29 03:49:32,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:49:32,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038448418] [2023-11-29 03:49:32,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038448418] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:49:32,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:49:32,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 03:49:32,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753348956] [2023-11-29 03:49:32,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:49:32,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:49:32,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:49:32,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:49:32,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:49:32,342 INFO L87 Difference]: Start difference. First operand 4996 states and 6790 transitions. Second operand has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 9 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-29 03:49:33,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:49:33,252 INFO L93 Difference]: Finished difference Result 4997 states and 6790 transitions. [2023-11-29 03:49:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:49:33,252 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 9 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 867 [2023-11-29 03:49:33,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:49:33,263 INFO L225 Difference]: With dead ends: 4997 [2023-11-29 03:49:33,263 INFO L226 Difference]: Without dead ends: 4996 [2023-11-29 03:49:33,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1739 GetRequests, 1719 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:49:33,266 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 58 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:49:33,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 567 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:49:33,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4996 states. [2023-11-29 03:49:33,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4996 to 4995. [2023-11-29 03:49:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4995 states, 3938 states have (on average 1.0622143219908584) internal successors, (4183), 3919 states have internal predecessors, (4183), 749 states have call successors, (749), 297 states have call predecessors, (749), 305 states have return successors, (1830), 778 states have call predecessors, (1830), 742 states have call successors, (1830) [2023-11-29 03:49:33,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4995 states to 4995 states and 6762 transitions. [2023-11-29 03:49:33,812 INFO L78 Accepts]: Start accepts. Automaton has 4995 states and 6762 transitions. Word has length 867 [2023-11-29 03:49:33,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:49:33,813 INFO L495 AbstractCegarLoop]: Abstraction has 4995 states and 6762 transitions. [2023-11-29 03:49:33,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 14 states have internal predecessors, (83), 9 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-29 03:49:33,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4995 states and 6762 transitions. [2023-11-29 03:49:33,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2023-11-29 03:49:33,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:49:33,820 INFO L195 NwaCegarLoop]: trace histogram [80, 79, 56, 56, 56, 56, 56, 56, 56, 55, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:49:33,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2023-11-29 03:49:34,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:34,020 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:49:34,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1243649969, now seen corresponding path program 22 times [2023-11-29 03:49:34,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:49:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451026230] [2023-11-29 03:49:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:34,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:49:34,048 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:49:34,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898512890] [2023-11-29 03:49:34,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:49:34,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:34,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:49:34,049 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:49:34,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2023-11-29 03:49:34,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:49:34,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:49:34,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 03:49:34,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:49:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 22227 backedges. 6098 proven. 649 refuted. 0 times theorem prover too weak. 15480 trivial. 0 not checked. [2023-11-29 03:49:35,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 22227 backedges. 6098 proven. 760 refuted. 0 times theorem prover too weak. 15369 trivial. 0 not checked. [2023-11-29 03:49:40,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:49:40,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451026230] [2023-11-29 03:49:40,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:49:40,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898512890] [2023-11-29 03:49:40,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898512890] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:49:40,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:49:40,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 34] total 37 [2023-11-29 03:49:40,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176819394] [2023-11-29 03:49:40,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:49:40,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 03:49:40,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:49:40,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 03:49:40,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1161, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 03:49:40,811 INFO L87 Difference]: Start difference. First operand 4995 states and 6762 transitions. Second operand has 37 states, 36 states have (on average 4.361111111111111) internal successors, (157), 36 states have internal predecessors, (157), 20 states have call successors, (27), 3 states have call predecessors, (27), 14 states have return successors, (34), 17 states have call predecessors, (34), 20 states have call successors, (34) [2023-11-29 03:49:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:49:44,192 INFO L93 Difference]: Finished difference Result 10300 states and 14735 transitions. [2023-11-29 03:49:44,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 03:49:44,192 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.361111111111111) internal successors, (157), 36 states have internal predecessors, (157), 20 states have call successors, (27), 3 states have call predecessors, (27), 14 states have return successors, (34), 17 states have call predecessors, (34), 20 states have call successors, (34) Word has length 816 [2023-11-29 03:49:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:49:44,209 INFO L225 Difference]: With dead ends: 10300 [2023-11-29 03:49:44,209 INFO L226 Difference]: Without dead ends: 5806 [2023-11-29 03:49:44,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1661 GetRequests, 1581 SyntacticMatches, 19 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=792, Invalid=3114, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 03:49:44,220 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 337 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:49:44,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 585 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 03:49:44,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5806 states. [2023-11-29 03:49:44,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5806 to 5245. [2023-11-29 03:49:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 4120 states have (on average 1.0601941747572816) internal successors, (4368), 4098 states have internal predecessors, (4368), 808 states have call successors, (808), 307 states have call predecessors, (808), 314 states have return successors, (2026), 839 states have call predecessors, (2026), 801 states have call successors, (2026) [2023-11-29 03:49:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 7202 transitions. [2023-11-29 03:49:44,858 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 7202 transitions. Word has length 816 [2023-11-29 03:49:44,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:49:44,858 INFO L495 AbstractCegarLoop]: Abstraction has 5245 states and 7202 transitions. [2023-11-29 03:49:44,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.361111111111111) internal successors, (157), 36 states have internal predecessors, (157), 20 states have call successors, (27), 3 states have call predecessors, (27), 14 states have return successors, (34), 17 states have call predecessors, (34), 20 states have call successors, (34) [2023-11-29 03:49:44,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 7202 transitions. [2023-11-29 03:49:44,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2023-11-29 03:49:44,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:49:44,866 INFO L195 NwaCegarLoop]: trace histogram [85, 80, 61, 61, 61, 61, 57, 57, 57, 56, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:49:44,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2023-11-29 03:49:45,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:45,066 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:49:45,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1497954103, now seen corresponding path program 23 times [2023-11-29 03:49:45,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:49:45,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847058079] [2023-11-29 03:49:45,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:45,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:49:45,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:49:45,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486530328] [2023-11-29 03:49:45,095 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:49:45,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:45,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:49:45,096 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:49:45,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2023-11-29 03:49:46,654 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2023-11-29 03:49:46,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:49:46,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 03:49:46,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:49:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 24243 backedges. 3375 proven. 1202 refuted. 0 times theorem prover too weak. 19666 trivial. 0 not checked. [2023-11-29 03:49:47,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 24243 backedges. 3375 proven. 1209 refuted. 0 times theorem prover too weak. 19659 trivial. 0 not checked. [2023-11-29 03:49:50,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:49:50,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847058079] [2023-11-29 03:49:50,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:49:50,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486530328] [2023-11-29 03:49:50,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486530328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:49:50,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:49:50,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 39] total 42 [2023-11-29 03:49:50,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312504374] [2023-11-29 03:49:50,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:49:50,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 03:49:50,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:49:50,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 03:49:50,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 03:49:50,358 INFO L87 Difference]: Start difference. First operand 5245 states and 7202 transitions. Second operand has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 36 states have internal predecessors, (154), 21 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) [2023-11-29 03:49:54,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:49:54,523 INFO L93 Difference]: Finished difference Result 10639 states and 15412 transitions. [2023-11-29 03:49:54,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 03:49:54,524 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 36 states have internal predecessors, (154), 21 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) Word has length 846 [2023-11-29 03:49:54,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:49:54,542 INFO L225 Difference]: With dead ends: 10639 [2023-11-29 03:49:54,542 INFO L226 Difference]: Without dead ends: 5929 [2023-11-29 03:49:54,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1721 GetRequests, 1621 SyntacticMatches, 31 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=735, Invalid=4235, Unknown=0, NotChecked=0, Total=4970 [2023-11-29 03:49:54,555 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 265 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:49:54,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 791 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 03:49:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5929 states. [2023-11-29 03:49:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5929 to 5420. [2023-11-29 03:49:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5420 states, 4264 states have (on average 1.0626172607879925) internal successors, (4531), 4240 states have internal predecessors, (4531), 830 states have call successors, (830), 319 states have call predecessors, (830), 323 states have return successors, (2107), 860 states have call predecessors, (2107), 823 states have call successors, (2107) [2023-11-29 03:49:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5420 states to 5420 states and 7468 transitions. [2023-11-29 03:49:55,223 INFO L78 Accepts]: Start accepts. Automaton has 5420 states and 7468 transitions. Word has length 846 [2023-11-29 03:49:55,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:49:55,223 INFO L495 AbstractCegarLoop]: Abstraction has 5420 states and 7468 transitions. [2023-11-29 03:49:55,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 36 states have internal predecessors, (154), 21 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) [2023-11-29 03:49:55,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5420 states and 7468 transitions. [2023-11-29 03:49:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2023-11-29 03:49:55,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:49:55,230 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 55, 55, 55, 55, 55, 55, 55, 55, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:49:55,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2023-11-29 03:49:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:55,431 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 03:49:55,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:49:55,431 INFO L85 PathProgramCache]: Analyzing trace with hash -785909463, now seen corresponding path program 6 times [2023-11-29 03:49:55,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:49:55,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805782452] [2023-11-29 03:49:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:55,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:49:55,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:49:55,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79020207] [2023-11-29 03:49:55,459 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:49:55,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:55,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:49:55,460 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:49:55,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2e8394c-d19b-4657-88bc-5fe104c11fed/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2023-11-29 03:49:55,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-11-29 03:49:55,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:49:55,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 03:49:55,937 INFO L285 TraceCheckSpWp]: Computing forward predicates...