./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 527bcce2 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_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx --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 0.2.3-dev-527bcce [2023-11-21 22:16:55,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:16:56,056 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-21 22:16:56,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:16:56,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:16:56,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:16:56,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:16:56,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:16:56,093 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:16:56,093 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:16:56,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:16:56,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:16:56,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:16:56,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:16:56,096 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:16:56,097 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:16:56,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:16:56,098 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:16:56,098 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:16:56,099 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:16:56,099 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:16:56,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:16:56,100 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:16:56,101 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:16:56,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:16:56,101 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:16:56,102 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:16:56,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:16:56,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:16:56,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:16:56,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:16:56,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:16:56,104 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:16:56,104 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:16:56,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:16:56,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:16:56,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:16:56,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:16:56,105 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:16:56,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:16:56,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:16:56,106 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_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2023-11-21 22:16:56,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:16:56,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:16:56,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:16:56,447 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:16:56,448 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:16:56,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/termination-numeric/Binomial.c [2023-11-21 22:16:59,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:16:59,758 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:16:59,759 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/sv-benchmarks/c/termination-numeric/Binomial.c [2023-11-21 22:16:59,769 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/data/daefd933f/6073dadddce74852be21a22c5b8e50f7/FLAGab26c943d [2023-11-21 22:16:59,792 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/data/daefd933f/6073dadddce74852be21a22c5b8e50f7 [2023-11-21 22:16:59,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:16:59,797 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:16:59,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:16:59,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:16:59,808 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:16:59,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:16:59" (1/1) ... [2023-11-21 22:16:59,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fc0e7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:59, skipping insertion in model container [2023-11-21 22:16:59,810 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:16:59" (1/1) ... [2023-11-21 22:16:59,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:17:00,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:17:00,035 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:17:00,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:17:00,062 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:17:00,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00 WrapperNode [2023-11-21 22:17:00,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:17:00,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:17:00,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:17:00,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:17:00,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (1/1) ... [2023-11-21 22:17:00,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (1/1) ... [2023-11-21 22:17:00,097 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-11-21 22:17:00,098 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:17:00,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:17:00,099 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:17:00,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:17:00,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (1/1) ... [2023-11-21 22:17:00,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (1/1) ... [2023-11-21 22:17:00,122 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (1/1) ... [2023-11-21 22:17:00,132 INFO L187 HeapSplitter]: Split 0 memory accesses to 0 slices as follows [] [2023-11-21 22:17:00,133 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (1/1) ... [2023-11-21 22:17:00,133 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (1/1) ... [2023-11-21 22:17:00,136 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (1/1) ... [2023-11-21 22:17:00,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (1/1) ... [2023-11-21 22:17:00,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (1/1) ... [2023-11-21 22:17:00,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (1/1) ... [2023-11-21 22:17:00,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:17:00,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:17:00,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:17:00,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:17:00,148 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (1/1) ... [2023-11-21 22:17:00,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:17:00,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:00,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:17:00,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:17:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2023-11-21 22:17:00,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2023-11-21 22:17:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2023-11-21 22:17:00,246 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2023-11-21 22:17:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:17:00,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:17:00,312 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:17:00,315 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:17:00,540 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:17:00,580 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:17:00,580 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:17:00,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:17:00 BoogieIcfgContainer [2023-11-21 22:17:00,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:17:00,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:17:00,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:17:00,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:17:00,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:16:59" (1/3) ... [2023-11-21 22:17:00,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc8fe41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:17:00, skipping insertion in model container [2023-11-21 22:17:00,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:00" (2/3) ... [2023-11-21 22:17:00,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc8fe41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:17:00, skipping insertion in model container [2023-11-21 22:17:00,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:17:00" (3/3) ... [2023-11-21 22:17:00,592 INFO L112 eAbstractionObserver]: Analyzing ICFG Binomial.c [2023-11-21 22:17:00,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:17:00,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-21 22:17:00,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:17:00,660 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;@4ba68c1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:17:00,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-21 22:17:00,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 32 states have (on average 1.625) internal successors, (52), 46 states have internal predecessors, (52), 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) [2023-11-21 22:17:00,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:17:00,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:00,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:17:00,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:00,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash -217058198, now seen corresponding path program 1 times [2023-11-21 22:17:00,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:00,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906866285] [2023-11-21 22:17:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:00,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:00,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:00,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906866285] [2023-11-21 22:17:00,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906866285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:00,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:00,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:17:00,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136582414] [2023-11-21 22:17:00,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:00,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:17:00,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:01,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:17:01,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:17:01,059 INFO L87 Difference]: Start difference. First operand has 55 states, 32 states have (on average 1.625) internal successors, (52), 46 states have internal predecessors, (52), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-11-21 22:17:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:01,238 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2023-11-21 22:17:01,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:17:01,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2023-11-21 22:17:01,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:01,249 INFO L225 Difference]: With dead ends: 109 [2023-11-21 22:17:01,249 INFO L226 Difference]: Without dead ends: 54 [2023-11-21 22:17:01,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:17:01,256 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 28 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:01,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 136 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:01,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-21 22:17:01,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-21 22:17:01,294 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) [2023-11-21 22:17:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2023-11-21 22:17:01,298 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 6 [2023-11-21 22:17:01,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:01,298 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2023-11-21 22:17:01,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-11-21 22:17:01,299 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2023-11-21 22:17:01,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 22:17:01,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:01,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:01,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:17:01,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:01,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:01,309 INFO L85 PathProgramCache]: Analyzing trace with hash 13084174, now seen corresponding path program 1 times [2023-11-21 22:17:01,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:01,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906626421] [2023-11-21 22:17:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:01,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:01,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:01,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906626421] [2023-11-21 22:17:01,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906626421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:01,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:01,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:17:01,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789579104] [2023-11-21 22:17:01,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:01,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:17:01,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:17:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:17:01,367 INFO L87 Difference]: Start difference. First operand 54 states and 61 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) [2023-11-21 22:17:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:01,398 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2023-11-21 22:17:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:17:01,399 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 [2023-11-21 22:17:01,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:01,402 INFO L225 Difference]: With dead ends: 56 [2023-11-21 22:17:01,402 INFO L226 Difference]: Without dead ends: 55 [2023-11-21 22:17:01,403 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 [2023-11-21 22:17:01,405 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 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 [2023-11-21 22:17:01,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:17:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-21 22:17:01,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2023-11-21 22:17:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.5) internal successors, (48), 44 states have internal predecessors, (48), 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) [2023-11-21 22:17:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2023-11-21 22:17:01,421 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 12 [2023-11-21 22:17:01,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:01,422 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2023-11-21 22:17:01,422 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) [2023-11-21 22:17:01,423 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2023-11-21 22:17:01,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 22:17:01,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:01,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:01,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:17:01,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:01,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:01,426 INFO L85 PathProgramCache]: Analyzing trace with hash 405609432, now seen corresponding path program 1 times [2023-11-21 22:17:01,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:01,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761477713] [2023-11-21 22:17:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:01,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:01,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:01,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761477713] [2023-11-21 22:17:01,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761477713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:01,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:01,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:17:01,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508484580] [2023-11-21 22:17:01,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:01,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:01,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:01,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:01,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:01,556 INFO L87 Difference]: Start difference. First operand 53 states and 60 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) [2023-11-21 22:17:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:01,742 INFO L93 Difference]: Finished difference Result 146 states and 173 transitions. [2023-11-21 22:17:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:17:01,744 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 [2023-11-21 22:17:01,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:01,754 INFO L225 Difference]: With dead ends: 146 [2023-11-21 22:17:01,754 INFO L226 Difference]: Without dead ends: 96 [2023-11-21 22:17:01,757 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 [2023-11-21 22:17:01,759 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 49 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:01,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 321 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-21 22:17:01,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 82. [2023-11-21 22:17:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 66 states have internal predecessors, (80), 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) [2023-11-21 22:17:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2023-11-21 22:17:01,781 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 13 [2023-11-21 22:17:01,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:01,782 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2023-11-21 22:17:01,782 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) [2023-11-21 22:17:01,782 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2023-11-21 22:17:01,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 22:17:01,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:01,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:01,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:17:01,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:01,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash 561923542, now seen corresponding path program 1 times [2023-11-21 22:17:01,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:01,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786186194] [2023-11-21 22:17:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:01,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:01,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:01,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786186194] [2023-11-21 22:17:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786186194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:01,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:01,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:17:01,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908909417] [2023-11-21 22:17:01,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:01,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:17:01,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:17:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:17:01,861 INFO L87 Difference]: Start difference. First operand 82 states and 102 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) [2023-11-21 22:17:01,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:01,939 INFO L93 Difference]: Finished difference Result 176 states and 215 transitions. [2023-11-21 22:17:01,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:17:01,940 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 [2023-11-21 22:17:01,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:01,946 INFO L225 Difference]: With dead ends: 176 [2023-11-21 22:17:01,949 INFO L226 Difference]: Without dead ends: 99 [2023-11-21 22:17:01,951 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 [2023-11-21 22:17:01,953 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 33 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:01,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 145 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:17:01,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-21 22:17:01,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 83. [2023-11-21 22:17:01,981 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) [2023-11-21 22:17:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2023-11-21 22:17:01,990 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 13 [2023-11-21 22:17:01,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:01,993 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2023-11-21 22:17:01,993 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) [2023-11-21 22:17:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2023-11-21 22:17:01,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 22:17:01,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:01,996 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:01,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:17:01,997 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:01,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash -612428253, now seen corresponding path program 1 times [2023-11-21 22:17:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:01,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615858300] [2023-11-21 22:17:01,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:01,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:17:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:02,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:02,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615858300] [2023-11-21 22:17:02,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615858300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:02,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:02,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:17:02,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334967293] [2023-11-21 22:17:02,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:02,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:02,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:02,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:02,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:02,160 INFO L87 Difference]: Start difference. First operand 83 states and 103 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) [2023-11-21 22:17:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:02,376 INFO L93 Difference]: Finished difference Result 215 states and 283 transitions. [2023-11-21 22:17:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:17:02,378 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 [2023-11-21 22:17:02,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:02,384 INFO L225 Difference]: With dead ends: 215 [2023-11-21 22:17:02,384 INFO L226 Difference]: Without dead ends: 138 [2023-11-21 22:17:02,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:17:02,387 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 41 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:02,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 272 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:02,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-21 22:17:02,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 118. [2023-11-21 22:17:02,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 79 states have (on average 1.4936708860759493) internal successors, (118), 93 states have internal predecessors, (118), 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) [2023-11-21 22:17:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 156 transitions. [2023-11-21 22:17:02,424 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 156 transitions. Word has length 19 [2023-11-21 22:17:02,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:02,427 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 156 transitions. [2023-11-21 22:17:02,429 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) [2023-11-21 22:17:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 156 transitions. [2023-11-21 22:17:02,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-21 22:17:02,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:02,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:02,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:17:02,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:02,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:02,432 INFO L85 PathProgramCache]: Analyzing trace with hash -133595047, now seen corresponding path program 1 times [2023-11-21 22:17:02,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:02,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802642168] [2023-11-21 22:17:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:02,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:17:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:17:02,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:02,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802642168] [2023-11-21 22:17:02,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802642168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:02,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:02,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:02,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56977971] [2023-11-21 22:17:02,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:02,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:02,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:02,602 INFO L87 Difference]: Start difference. First operand 118 states and 156 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) [2023-11-21 22:17:02,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:02,778 INFO L93 Difference]: Finished difference Result 154 states and 192 transitions. [2023-11-21 22:17:02,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:17:02,779 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 [2023-11-21 22:17:02,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:02,781 INFO L225 Difference]: With dead ends: 154 [2023-11-21 22:17:02,794 INFO L226 Difference]: Without dead ends: 153 [2023-11-21 22:17:02,794 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 [2023-11-21 22:17:02,796 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 59 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:02,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 229 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:02,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-21 22:17:02,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 132. [2023-11-21 22:17:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 103 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) [2023-11-21 22:17:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 174 transitions. [2023-11-21 22:17:02,819 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 174 transitions. Word has length 21 [2023-11-21 22:17:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:02,820 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 174 transitions. [2023-11-21 22:17:02,820 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) [2023-11-21 22:17:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 174 transitions. [2023-11-21 22:17:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-21 22:17:02,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:02,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:02,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:17:02,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:02,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:02,822 INFO L85 PathProgramCache]: Analyzing trace with hash 153520893, now seen corresponding path program 1 times [2023-11-21 22:17:02,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:02,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467909180] [2023-11-21 22:17:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:02,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:17:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:17:02,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:02,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467909180] [2023-11-21 22:17:02,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467909180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:02,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:02,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:02,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086354172] [2023-11-21 22:17:02,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:02,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:02,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:02,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:02,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:02,966 INFO L87 Difference]: Start difference. First operand 132 states and 174 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) [2023-11-21 22:17:03,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:03,072 INFO L93 Difference]: Finished difference Result 154 states and 189 transitions. [2023-11-21 22:17:03,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:17:03,072 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 [2023-11-21 22:17:03,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:03,075 INFO L225 Difference]: With dead ends: 154 [2023-11-21 22:17:03,075 INFO L226 Difference]: Without dead ends: 153 [2023-11-21 22:17:03,075 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 [2023-11-21 22:17:03,079 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 58 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:03,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 227 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:03,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-21 22:17:03,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 132. [2023-11-21 22:17:03,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 89 states have (on average 1.449438202247191) internal successors, (129), 103 states have internal predecessors, (129), 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) [2023-11-21 22:17:03,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 173 transitions. [2023-11-21 22:17:03,098 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 173 transitions. Word has length 22 [2023-11-21 22:17:03,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:03,099 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 173 transitions. [2023-11-21 22:17:03,099 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) [2023-11-21 22:17:03,099 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 173 transitions. [2023-11-21 22:17:03,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-21 22:17:03,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:03,100 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] [2023-11-21 22:17:03,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:17:03,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:03,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash -226875282, now seen corresponding path program 1 times [2023-11-21 22:17:03,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:03,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645731823] [2023-11-21 22:17:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:03,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:17:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:17:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:17:03,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:03,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645731823] [2023-11-21 22:17:03,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645731823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:03,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:03,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:03,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068624695] [2023-11-21 22:17:03,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:03,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:17:03,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:03,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:17:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:17:03,208 INFO L87 Difference]: Start difference. First operand 132 states and 173 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) [2023-11-21 22:17:03,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:03,375 INFO L93 Difference]: Finished difference Result 276 states and 360 transitions. [2023-11-21 22:17:03,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 22:17:03,376 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 [2023-11-21 22:17:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:03,378 INFO L225 Difference]: With dead ends: 276 [2023-11-21 22:17:03,378 INFO L226 Difference]: Without dead ends: 159 [2023-11-21 22:17:03,379 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 [2023-11-21 22:17:03,380 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 61 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 311 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 [2023-11-21 22:17:03,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 311 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-21 22:17:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 136. [2023-11-21 22:17:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 92 states have (on average 1.434782608695652) internal successors, (132), 106 states have internal predecessors, (132), 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) [2023-11-21 22:17:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 176 transitions. [2023-11-21 22:17:03,398 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 176 transitions. Word has length 27 [2023-11-21 22:17:03,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:03,399 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 176 transitions. [2023-11-21 22:17:03,399 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) [2023-11-21 22:17:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 176 transitions. [2023-11-21 22:17:03,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 22:17:03,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:03,400 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] [2023-11-21 22:17:03,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:17:03,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:03,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:03,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1015624742, now seen corresponding path program 1 times [2023-11-21 22:17:03,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:03,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816961091] [2023-11-21 22:17:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:03,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:03,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:03,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145256939] [2023-11-21 22:17:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:03,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:03,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:03,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:03,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:17:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:17:03,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-21 22:17:03,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:03,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:03,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816961091] [2023-11-21 22:17:03,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:03,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145256939] [2023-11-21 22:17:03,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145256939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:03,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:03,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:17:03,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60670520] [2023-11-21 22:17:03,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:03,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:17:03,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:03,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:17:03,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:17:03,598 INFO L87 Difference]: Start difference. First operand 136 states and 176 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) [2023-11-21 22:17:03,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:03,669 INFO L93 Difference]: Finished difference Result 194 states and 273 transitions. [2023-11-21 22:17:03,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:17:03,669 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 [2023-11-21 22:17:03,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:03,672 INFO L225 Difference]: With dead ends: 194 [2023-11-21 22:17:03,672 INFO L226 Difference]: Without dead ends: 193 [2023-11-21 22:17:03,672 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 [2023-11-21 22:17:03,673 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 22 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:03,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 144 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:03,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-21 22:17:03,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 158. [2023-11-21 22:17:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 110 states have (on average 1.3909090909090909) internal successors, (153), 121 states have internal predecessors, (153), 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) [2023-11-21 22:17:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 217 transitions. [2023-11-21 22:17:03,692 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 217 transitions. Word has length 29 [2023-11-21 22:17:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:03,692 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 217 transitions. [2023-11-21 22:17:03,693 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) [2023-11-21 22:17:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 217 transitions. [2023-11-21 22:17:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-21 22:17:03,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:03,694 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] [2023-11-21 22:17:03,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:03,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:03,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:03,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:03,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1419595990, now seen corresponding path program 1 times [2023-11-21 22:17:03,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:03,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507371121] [2023-11-21 22:17:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:03,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:03,923 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:03,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190767393] [2023-11-21 22:17:03,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:03,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:03,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:03,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:03,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:17:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:03,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:17:03,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 22:17:04,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:04,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:04,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507371121] [2023-11-21 22:17:04,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:04,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190767393] [2023-11-21 22:17:04,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190767393] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:04,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:17:04,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-21 22:17:04,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178002366] [2023-11-21 22:17:04,180 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:04,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:04,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:04,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:04,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:17:04,184 INFO L87 Difference]: Start difference. First operand 158 states and 217 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:17:04,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:04,265 INFO L93 Difference]: Finished difference Result 194 states and 268 transitions. [2023-11-21 22:17:04,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:17:04,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-11-21 22:17:04,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:04,270 INFO L225 Difference]: With dead ends: 194 [2023-11-21 22:17:04,270 INFO L226 Difference]: Without dead ends: 193 [2023-11-21 22:17:04,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:17:04,274 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 13 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:04,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 230 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:04,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-21 22:17:04,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 162. [2023-11-21 22:17:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 114 states have (on average 1.368421052631579) internal successors, (156), 125 states have internal predecessors, (156), 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) [2023-11-21 22:17:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 220 transitions. [2023-11-21 22:17:04,298 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 220 transitions. Word has length 30 [2023-11-21 22:17:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:04,298 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 220 transitions. [2023-11-21 22:17:04,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:17:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 220 transitions. [2023-11-21 22:17:04,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 22:17:04,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:04,307 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] [2023-11-21 22:17:04,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:04,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:04,527 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:04,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:04,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1057802792, now seen corresponding path program 1 times [2023-11-21 22:17:04,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:04,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206393752] [2023-11-21 22:17:04,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:04,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:04,543 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:04,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613434521] [2023-11-21 22:17:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:04,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:04,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:04,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:04,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:17:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:04,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 22:17:04,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:17:04,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:04,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:04,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206393752] [2023-11-21 22:17:04,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:04,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613434521] [2023-11-21 22:17:04,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613434521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:04,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:04,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:04,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560593730] [2023-11-21 22:17:04,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:04,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:04,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:04,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:04,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:04,778 INFO L87 Difference]: Start difference. First operand 162 states and 220 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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) [2023-11-21 22:17:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:04,886 INFO L93 Difference]: Finished difference Result 249 states and 347 transitions. [2023-11-21 22:17:04,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:17:04,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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 [2023-11-21 22:17:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:04,891 INFO L225 Difference]: With dead ends: 249 [2023-11-21 22:17:04,892 INFO L226 Difference]: Without dead ends: 247 [2023-11-21 22:17:04,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:04,893 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 34 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:04,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 194 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:04,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-21 22:17:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 197. [2023-11-21 22:17:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 143 states have (on average 1.3076923076923077) internal successors, (187), 151 states have internal predecessors, (187), 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) [2023-11-21 22:17:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 268 transitions. [2023-11-21 22:17:04,916 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 268 transitions. Word has length 31 [2023-11-21 22:17:04,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:04,916 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 268 transitions. [2023-11-21 22:17:04,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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) [2023-11-21 22:17:04,916 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 268 transitions. [2023-11-21 22:17:04,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 22:17:04,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:04,917 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] [2023-11-21 22:17:04,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:05,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:05,138 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:05,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:05,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1200186656, now seen corresponding path program 1 times [2023-11-21 22:17:05,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:05,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177782759] [2023-11-21 22:17:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:05,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:05,148 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:05,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871599769] [2023-11-21 22:17:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:05,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:05,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:05,150 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:05,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:17:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:05,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:17:05,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:17:05,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:05,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:05,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177782759] [2023-11-21 22:17:05,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:05,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871599769] [2023-11-21 22:17:05,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871599769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:05,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:05,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:17:05,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132131450] [2023-11-21 22:17:05,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:05,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:17:05,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:05,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:17:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:17:05,253 INFO L87 Difference]: Start difference. First operand 197 states and 268 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) [2023-11-21 22:17:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:05,293 INFO L93 Difference]: Finished difference Result 197 states and 268 transitions. [2023-11-21 22:17:05,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:17:05,294 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 [2023-11-21 22:17:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:05,300 INFO L225 Difference]: With dead ends: 197 [2023-11-21 22:17:05,300 INFO L226 Difference]: Without dead ends: 196 [2023-11-21 22:17:05,301 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 [2023-11-21 22:17:05,302 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:05,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 139 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:17:05,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-21 22:17:05,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-11-21 22:17:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 143 states have (on average 1.2937062937062938) internal successors, (185), 150 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) [2023-11-21 22:17:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 266 transitions. [2023-11-21 22:17:05,333 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 266 transitions. Word has length 36 [2023-11-21 22:17:05,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:05,334 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 266 transitions. [2023-11-21 22:17:05,334 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) [2023-11-21 22:17:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 266 transitions. [2023-11-21 22:17:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 22:17:05,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:05,335 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] [2023-11-21 22:17:05,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:05,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:05,557 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:05,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:05,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1448919219, now seen corresponding path program 1 times [2023-11-21 22:17:05,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:05,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626637863] [2023-11-21 22:17:05,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:05,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:05,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:05,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128619715] [2023-11-21 22:17:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:05,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:05,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:05,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:05,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:17:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:05,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:17:05,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:17:05,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:05,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:05,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626637863] [2023-11-21 22:17:05,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:05,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128619715] [2023-11-21 22:17:05,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128619715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:05,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:05,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:17:05,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506954957] [2023-11-21 22:17:05,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:05,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:17:05,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:05,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:17:05,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:17:05,650 INFO L87 Difference]: Start difference. First operand 196 states and 266 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) [2023-11-21 22:17:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:05,695 INFO L93 Difference]: Finished difference Result 207 states and 279 transitions. [2023-11-21 22:17:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:17:05,696 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 [2023-11-21 22:17:05,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:05,698 INFO L225 Difference]: With dead ends: 207 [2023-11-21 22:17:05,698 INFO L226 Difference]: Without dead ends: 206 [2023-11-21 22:17:05,699 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 [2023-11-21 22:17:05,700 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:05,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 151 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:17:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-21 22:17:05,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2023-11-21 22:17:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 152 states have (on average 1.2763157894736843) 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) [2023-11-21 22:17:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 277 transitions. [2023-11-21 22:17:05,722 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 277 transitions. Word has length 37 [2023-11-21 22:17:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:05,722 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 277 transitions. [2023-11-21 22:17:05,722 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) [2023-11-21 22:17:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 277 transitions. [2023-11-21 22:17:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-21 22:17:05,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:05,724 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] [2023-11-21 22:17:05,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:05,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 22:17:05,937 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:05,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash -841960974, now seen corresponding path program 1 times [2023-11-21 22:17:05,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:05,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780327397] [2023-11-21 22:17:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:05,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:05,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:05,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710712853] [2023-11-21 22:17:05,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:05,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:05,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:05,948 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:05,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:17:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:17:06,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:17:06,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:06,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:06,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780327397] [2023-11-21 22:17:06,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:06,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710712853] [2023-11-21 22:17:06,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710712853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:06,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:06,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:17:06,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853086413] [2023-11-21 22:17:06,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:06,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:17:06,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:06,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:17:06,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:17:06,045 INFO L87 Difference]: Start difference. First operand 206 states and 277 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-11-21 22:17:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:06,079 INFO L93 Difference]: Finished difference Result 206 states and 277 transitions. [2023-11-21 22:17:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:17:06,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 39 [2023-11-21 22:17:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:06,082 INFO L225 Difference]: With dead ends: 206 [2023-11-21 22:17:06,082 INFO L226 Difference]: Without dead ends: 205 [2023-11-21 22:17:06,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:17:06,083 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 8 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 134 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 [2023-11-21 22:17:06,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 134 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:17:06,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-21 22:17:06,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2023-11-21 22:17:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 152 states have (on average 1.269736842105263) internal successors, (193), 156 states have internal predecessors, (193), 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) [2023-11-21 22:17:06,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 276 transitions. [2023-11-21 22:17:06,103 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 276 transitions. Word has length 39 [2023-11-21 22:17:06,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:06,104 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 276 transitions. [2023-11-21 22:17:06,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-11-21 22:17:06,104 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 276 transitions. [2023-11-21 22:17:06,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-21 22:17:06,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:06,106 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] [2023-11-21 22:17:06,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:06,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:06,320 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:06,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash -330986299, now seen corresponding path program 1 times [2023-11-21 22:17:06,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:06,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282084774] [2023-11-21 22:17:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:06,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:06,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:06,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594630962] [2023-11-21 22:17:06,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:06,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:06,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:06,330 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:06,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:17:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:17:06,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:06,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:17:06,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:06,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:06,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282084774] [2023-11-21 22:17:06,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:06,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594630962] [2023-11-21 22:17:06,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594630962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:06,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:06,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:17:06,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316423959] [2023-11-21 22:17:06,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:06,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:17:06,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:06,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:17:06,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:17:06,419 INFO L87 Difference]: Start difference. First operand 205 states and 276 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) [2023-11-21 22:17:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:06,456 INFO L93 Difference]: Finished difference Result 209 states and 279 transitions. [2023-11-21 22:17:06,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:17:06,456 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 [2023-11-21 22:17:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:06,458 INFO L225 Difference]: With dead ends: 209 [2023-11-21 22:17:06,459 INFO L226 Difference]: Without dead ends: 208 [2023-11-21 22:17:06,459 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 [2023-11-21 22:17:06,460 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 5 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 146 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 [2023-11-21 22:17:06,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 146 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:17:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-21 22:17:06,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2023-11-21 22:17:06,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 154 states have (on average 1.2662337662337662) 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) [2023-11-21 22:17:06,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 278 transitions. [2023-11-21 22:17:06,479 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 278 transitions. Word has length 40 [2023-11-21 22:17:06,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:06,479 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 278 transitions. [2023-11-21 22:17:06,479 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) [2023-11-21 22:17:06,479 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 278 transitions. [2023-11-21 22:17:06,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-21 22:17:06,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:06,480 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] [2023-11-21 22:17:06,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:06,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:06,697 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:06,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:06,697 INFO L85 PathProgramCache]: Analyzing trace with hash 478068558, now seen corresponding path program 1 times [2023-11-21 22:17:06,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:06,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928136722] [2023-11-21 22:17:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:06,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:06,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:06,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519960384] [2023-11-21 22:17:06,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:06,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:06,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:06,715 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:06,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:17:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:06,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:17:06,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:17:06,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:07,071 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:17:07,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:07,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928136722] [2023-11-21 22:17:07,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:07,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519960384] [2023-11-21 22:17:07,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519960384] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:07,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:17:07,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-21 22:17:07,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138521485] [2023-11-21 22:17:07,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:07,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-21 22:17:07,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-21 22:17:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:17:07,077 INFO L87 Difference]: Start difference. First operand 207 states and 278 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) [2023-11-21 22:17:07,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:07,569 INFO L93 Difference]: Finished difference Result 298 states and 391 transitions. [2023-11-21 22:17:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 22:17:07,570 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 [2023-11-21 22:17:07,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:07,573 INFO L225 Difference]: With dead ends: 298 [2023-11-21 22:17:07,573 INFO L226 Difference]: Without dead ends: 297 [2023-11-21 22:17:07,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:17:07,575 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 149 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:07,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 474 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:17:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-21 22:17:07,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 269. [2023-11-21 22:17:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 201 states have (on average 1.3034825870646767) internal successors, (262), 207 states have internal predecessors, (262), 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) [2023-11-21 22:17:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 373 transitions. [2023-11-21 22:17:07,600 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 373 transitions. Word has length 46 [2023-11-21 22:17:07,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:07,601 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 373 transitions. [2023-11-21 22:17:07,601 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) [2023-11-21 22:17:07,601 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 373 transitions. [2023-11-21 22:17:07,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-21 22:17:07,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:07,602 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] [2023-11-21 22:17:07,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:07,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-21 22:17:07,817 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:07,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash -655161108, now seen corresponding path program 1 times [2023-11-21 22:17:07,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:07,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670437178] [2023-11-21 22:17:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:07,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:07,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:07,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170364025] [2023-11-21 22:17:07,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:07,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:07,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:07,828 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:07,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 22:17:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:07,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:17:07,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:17:07,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:17:08,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:08,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670437178] [2023-11-21 22:17:08,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:08,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170364025] [2023-11-21 22:17:08,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170364025] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:08,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:17:08,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-21 22:17:08,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89543162] [2023-11-21 22:17:08,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:08,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:17:08,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:17:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:17:08,050 INFO L87 Difference]: Start difference. First operand 269 states and 373 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2023-11-21 22:17:08,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:08,321 INFO L93 Difference]: Finished difference Result 518 states and 715 transitions. [2023-11-21 22:17:08,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 22:17:08,322 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 50 [2023-11-21 22:17:08,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:08,325 INFO L225 Difference]: With dead ends: 518 [2023-11-21 22:17:08,325 INFO L226 Difference]: Without dead ends: 313 [2023-11-21 22:17:08,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2023-11-21 22:17:08,327 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 78 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:08,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 319 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:08,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-21 22:17:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 283. [2023-11-21 22:17:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 215 states have (on average 1.2976744186046512) internal successors, (279), 221 states have internal predecessors, (279), 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) [2023-11-21 22:17:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 390 transitions. [2023-11-21 22:17:08,352 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 390 transitions. Word has length 50 [2023-11-21 22:17:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:08,353 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 390 transitions. [2023-11-21 22:17:08,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2023-11-21 22:17:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 390 transitions. [2023-11-21 22:17:08,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-21 22:17:08,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:08,354 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] [2023-11-21 22:17:08,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:08,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-21 22:17:08,575 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:08,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:08,576 INFO L85 PathProgramCache]: Analyzing trace with hash 879531419, now seen corresponding path program 1 times [2023-11-21 22:17:08,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:08,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094169077] [2023-11-21 22:17:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:08,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:08,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:08,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117869177] [2023-11-21 22:17:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:08,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:08,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:08,588 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:08,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 22:17:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:08,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:17:08,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:17:08,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:08,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:08,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094169077] [2023-11-21 22:17:08,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:08,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117869177] [2023-11-21 22:17:08,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117869177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:08,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:08,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:17:08,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759144840] [2023-11-21 22:17:08,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:08,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:08,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:08,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:08,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:08,720 INFO L87 Difference]: Start difference. First operand 283 states and 390 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) [2023-11-21 22:17:08,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:08,803 INFO L93 Difference]: Finished difference Result 506 states and 701 transitions. [2023-11-21 22:17:08,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:17:08,804 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 [2023-11-21 22:17:08,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:08,806 INFO L225 Difference]: With dead ends: 506 [2023-11-21 22:17:08,806 INFO L226 Difference]: Without dead ends: 255 [2023-11-21 22:17:08,808 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 [2023-11-21 22:17:08,809 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 13 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:08,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 184 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:17:08,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-21 22:17:08,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2023-11-21 22:17:08,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 192 states have (on average 1.2864583333333333) internal successors, (247), 199 states have internal predecessors, (247), 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) [2023-11-21 22:17:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 345 transitions. [2023-11-21 22:17:08,829 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 345 transitions. Word has length 52 [2023-11-21 22:17:08,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:08,830 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 345 transitions. [2023-11-21 22:17:08,830 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) [2023-11-21 22:17:08,830 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 345 transitions. [2023-11-21 22:17:08,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-21 22:17:08,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:08,831 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] [2023-11-21 22:17:08,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:09,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-21 22:17:09,045 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:09,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1729509095, now seen corresponding path program 2 times [2023-11-21 22:17:09,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:09,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180598632] [2023-11-21 22:17:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:09,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:09,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:09,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702516526] [2023-11-21 22:17:09,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:17:09,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:09,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:09,062 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:09,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 22:17:09,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:17:09,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:17:09,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:17:09,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-21 22:17:09,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:09,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:09,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180598632] [2023-11-21 22:17:09,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:09,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702516526] [2023-11-21 22:17:09,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702516526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:09,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:09,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:17:09,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226073422] [2023-11-21 22:17:09,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:09,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:17:09,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:09,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:17:09,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:17:09,198 INFO L87 Difference]: Start difference. First operand 254 states and 345 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) [2023-11-21 22:17:09,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:09,414 INFO L93 Difference]: Finished difference Result 521 states and 726 transitions. [2023-11-21 22:17:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:17:09,415 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 [2023-11-21 22:17:09,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:09,417 INFO L225 Difference]: With dead ends: 521 [2023-11-21 22:17:09,418 INFO L226 Difference]: Without dead ends: 303 [2023-11-21 22:17:09,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:17:09,420 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 52 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:09,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 277 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:17:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-21 22:17:09,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 296. [2023-11-21 22:17:09,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 224 states have (on average 1.3169642857142858) internal successors, (295), 229 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) [2023-11-21 22:17:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 415 transitions. [2023-11-21 22:17:09,444 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 415 transitions. Word has length 52 [2023-11-21 22:17:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:09,445 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 415 transitions. [2023-11-21 22:17:09,445 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) [2023-11-21 22:17:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 415 transitions. [2023-11-21 22:17:09,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-21 22:17:09,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:09,446 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] [2023-11-21 22:17:09,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:09,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:09,667 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:09,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:09,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1809303895, now seen corresponding path program 1 times [2023-11-21 22:17:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:09,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490197122] [2023-11-21 22:17:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:09,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:09,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:09,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953935731] [2023-11-21 22:17:09,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:09,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:09,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:09,677 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:09,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-21 22:17:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:09,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:17:09,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-21 22:17:09,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:09,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:09,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490197122] [2023-11-21 22:17:09,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:09,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953935731] [2023-11-21 22:17:09,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953935731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:09,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:09,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:09,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954520650] [2023-11-21 22:17:09,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:09,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:17:09,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:17:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:17:09,787 INFO L87 Difference]: Start difference. First operand 296 states and 415 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) [2023-11-21 22:17:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:09,830 INFO L93 Difference]: Finished difference Result 296 states and 415 transitions. [2023-11-21 22:17:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:17:09,831 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 [2023-11-21 22:17:09,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:09,833 INFO L225 Difference]: With dead ends: 296 [2023-11-21 22:17:09,833 INFO L226 Difference]: Without dead ends: 295 [2023-11-21 22:17:09,834 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 [2023-11-21 22:17:09,835 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:09,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 190 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:17:09,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-21 22:17:09,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2023-11-21 22:17:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 224 states have (on average 1.3035714285714286) internal successors, (292), 228 states have internal predecessors, (292), 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) [2023-11-21 22:17:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 412 transitions. [2023-11-21 22:17:09,856 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 412 transitions. Word has length 53 [2023-11-21 22:17:09,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:09,857 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 412 transitions. [2023-11-21 22:17:09,857 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) [2023-11-21 22:17:09,857 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 412 transitions. [2023-11-21 22:17:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-21 22:17:09,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:09,858 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] [2023-11-21 22:17:09,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:10,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:10,078 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:10,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:10,078 INFO L85 PathProgramCache]: Analyzing trace with hash -253845853, now seen corresponding path program 1 times [2023-11-21 22:17:10,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:10,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018848442] [2023-11-21 22:17:10,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:10,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:10,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:10,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100388835] [2023-11-21 22:17:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:10,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:10,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:10,088 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:10,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-21 22:17:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:10,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:17:10,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:17:10,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:10,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:10,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018848442] [2023-11-21 22:17:10,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:10,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100388835] [2023-11-21 22:17:10,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100388835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:10,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:17:10,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-21 22:17:10,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816977183] [2023-11-21 22:17:10,365 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:10,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:17:10,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:10,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:17:10,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:17:10,367 INFO L87 Difference]: Start difference. First operand 295 states and 412 transitions. Second operand has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2023-11-21 22:17:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:10,825 INFO L93 Difference]: Finished difference Result 429 states and 592 transitions. [2023-11-21 22:17:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 22:17:10,826 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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 54 [2023-11-21 22:17:10,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:10,829 INFO L225 Difference]: With dead ends: 429 [2023-11-21 22:17:10,829 INFO L226 Difference]: Without dead ends: 426 [2023-11-21 22:17:10,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2023-11-21 22:17:10,831 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 85 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:10,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 375 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:17:10,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-11-21 22:17:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 399. [2023-11-21 22:17:10,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 305 states have (on average 1.301639344262295) internal successors, (397), 308 states have internal predecessors, (397), 62 states have call successors, (62), 17 states have call predecessors, (62), 22 states have return successors, (106), 73 states have call predecessors, (106), 62 states have call successors, (106) [2023-11-21 22:17:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 565 transitions. [2023-11-21 22:17:10,867 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 565 transitions. Word has length 54 [2023-11-21 22:17:10,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:10,867 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 565 transitions. [2023-11-21 22:17:10,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2023-11-21 22:17:10,868 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 565 transitions. [2023-11-21 22:17:10,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-21 22:17:10,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:10,869 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] [2023-11-21 22:17:10,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:11,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-21 22:17:11,089 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:11,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:11,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1335824881, now seen corresponding path program 1 times [2023-11-21 22:17:11,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:11,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514699380] [2023-11-21 22:17:11,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:11,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:11,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:11,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895488392] [2023-11-21 22:17:11,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:11,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:11,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:11,101 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:11,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-21 22:17:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:11,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:17:11,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-21 22:17:11,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:11,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:11,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514699380] [2023-11-21 22:17:11,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:11,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895488392] [2023-11-21 22:17:11,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895488392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:11,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:11,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:17:11,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741426330] [2023-11-21 22:17:11,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:11,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:11,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:11,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:11,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:11,217 INFO L87 Difference]: Start difference. First operand 399 states and 565 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) [2023-11-21 22:17:11,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:11,340 INFO L93 Difference]: Finished difference Result 754 states and 1064 transitions. [2023-11-21 22:17:11,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:17:11,341 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 [2023-11-21 22:17:11,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:11,344 INFO L225 Difference]: With dead ends: 754 [2023-11-21 22:17:11,345 INFO L226 Difference]: Without dead ends: 402 [2023-11-21 22:17:11,347 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 [2023-11-21 22:17:11,348 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 38 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 314 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 [2023-11-21 22:17:11,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 314 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:11,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-21 22:17:11,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 395. [2023-11-21 22:17:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 302 states have (on average 1.2913907284768211) internal successors, (390), 305 states have internal predecessors, (390), 60 states have call successors, (60), 18 states have call predecessors, (60), 23 states have return successors, (100), 71 states have call predecessors, (100), 60 states have call successors, (100) [2023-11-21 22:17:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 550 transitions. [2023-11-21 22:17:11,375 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 550 transitions. Word has length 62 [2023-11-21 22:17:11,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:11,376 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 550 transitions. [2023-11-21 22:17:11,376 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) [2023-11-21 22:17:11,376 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 550 transitions. [2023-11-21 22:17:11,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-21 22:17:11,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:11,377 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] [2023-11-21 22:17:11,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:11,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-21 22:17:11,589 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:11,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:11,589 INFO L85 PathProgramCache]: Analyzing trace with hash -468074329, now seen corresponding path program 1 times [2023-11-21 22:17:11,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:11,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58109172] [2023-11-21 22:17:11,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:11,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:11,598 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:11,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308197513] [2023-11-21 22:17:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:11,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:11,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:11,603 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:11,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-21 22:17:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:11,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:17:11,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-21 22:17:11,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:11,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:11,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58109172] [2023-11-21 22:17:11,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:11,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308197513] [2023-11-21 22:17:11,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308197513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:11,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:11,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:17:11,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014563608] [2023-11-21 22:17:11,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:11,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:17:11,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:11,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:17:11,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:17:11,771 INFO L87 Difference]: Start difference. First operand 395 states and 550 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) [2023-11-21 22:17:11,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:11,899 INFO L93 Difference]: Finished difference Result 402 states and 550 transitions. [2023-11-21 22:17:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:17:11,900 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 [2023-11-21 22:17:11,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:11,903 INFO L225 Difference]: With dead ends: 402 [2023-11-21 22:17:11,904 INFO L226 Difference]: Without dead ends: 401 [2023-11-21 22:17:11,904 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 [2023-11-21 22:17:11,905 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 38 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:11,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 206 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:11,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-11-21 22:17:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 395. [2023-11-21 22:17:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 302 states have (on average 1.2847682119205297) internal successors, (388), 305 states have internal predecessors, (388), 60 states have call successors, (60), 18 states have call predecessors, (60), 23 states have return successors, (100), 71 states have call predecessors, (100), 60 states have call successors, (100) [2023-11-21 22:17:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 548 transitions. [2023-11-21 22:17:11,932 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 548 transitions. Word has length 64 [2023-11-21 22:17:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:11,933 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 548 transitions. [2023-11-21 22:17:11,933 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) [2023-11-21 22:17:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 548 transitions. [2023-11-21 22:17:11,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-21 22:17:11,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:11,934 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] [2023-11-21 22:17:11,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:12,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-21 22:17:12,158 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:12,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:12,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1625402257, now seen corresponding path program 1 times [2023-11-21 22:17:12,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:12,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175791932] [2023-11-21 22:17:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:12,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:12,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:12,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036235513] [2023-11-21 22:17:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:12,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:12,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:12,170 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:12,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-21 22:17:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:12,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:17:12,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-21 22:17:12,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-21 22:17:12,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:12,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175791932] [2023-11-21 22:17:12,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:12,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036235513] [2023-11-21 22:17:12,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036235513] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:12,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:17:12,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-21 22:17:12,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263137946] [2023-11-21 22:17:12,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:12,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 22:17:12,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:12,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 22:17:12,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:17:12,489 INFO L87 Difference]: Start difference. First operand 395 states and 548 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) [2023-11-21 22:17:12,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:12,762 INFO L93 Difference]: Finished difference Result 488 states and 675 transitions. [2023-11-21 22:17:12,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-21 22:17:12,763 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 [2023-11-21 22:17:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:12,767 INFO L225 Difference]: With dead ends: 488 [2023-11-21 22:17:12,767 INFO L226 Difference]: Without dead ends: 487 [2023-11-21 22:17:12,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-11-21 22:17:12,769 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 116 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:12,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 340 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:17:12,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-11-21 22:17:12,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 462. [2023-11-21 22:17:12,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 353 states have (on average 1.271954674220963) internal successors, (449), 354 states have internal predecessors, (449), 74 states have call successors, (74), 20 states have call predecessors, (74), 25 states have return successors, (126), 87 states have call predecessors, (126), 74 states have call successors, (126) [2023-11-21 22:17:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 649 transitions. [2023-11-21 22:17:12,808 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 649 transitions. Word has length 65 [2023-11-21 22:17:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:12,809 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 649 transitions. [2023-11-21 22:17:12,809 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) [2023-11-21 22:17:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 649 transitions. [2023-11-21 22:17:12,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-21 22:17:12,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:12,810 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] [2023-11-21 22:17:12,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:13,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-21 22:17:13,030 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:13,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:13,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1065383484, now seen corresponding path program 2 times [2023-11-21 22:17:13,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:13,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275478316] [2023-11-21 22:17:13,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:13,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:13,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:13,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006370694] [2023-11-21 22:17:13,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:17:13,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:13,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:13,043 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:13,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-21 22:17:13,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:17:13,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:17:13,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:17:13,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-21 22:17:13,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-21 22:17:13,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:13,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275478316] [2023-11-21 22:17:13,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:13,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006370694] [2023-11-21 22:17:13,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006370694] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:13,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:17:13,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-21 22:17:13,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677468998] [2023-11-21 22:17:13,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:13,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-21 22:17:13,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:13,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-21 22:17:13,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:17:13,405 INFO L87 Difference]: Start difference. First operand 462 states and 649 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) [2023-11-21 22:17:13,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:13,870 INFO L93 Difference]: Finished difference Result 531 states and 719 transitions. [2023-11-21 22:17:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:17:13,871 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 [2023-11-21 22:17:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:13,878 INFO L225 Difference]: With dead ends: 531 [2023-11-21 22:17:13,878 INFO L226 Difference]: Without dead ends: 530 [2023-11-21 22:17:13,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2023-11-21 22:17:13,880 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 149 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:13,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 446 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:17:13,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-11-21 22:17:13,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 520. [2023-11-21 22:17:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 397 states have (on average 1.2619647355163728) internal successors, (501), 402 states have internal predecessors, (501), 79 states have call successors, (79), 25 states have call predecessors, (79), 34 states have return successors, (133), 92 states have call predecessors, (133), 79 states have call successors, (133) [2023-11-21 22:17:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 713 transitions. [2023-11-21 22:17:13,936 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 713 transitions. Word has length 70 [2023-11-21 22:17:13,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:13,937 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 713 transitions. [2023-11-21 22:17:13,938 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) [2023-11-21 22:17:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 713 transitions. [2023-11-21 22:17:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-21 22:17:13,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:13,939 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] [2023-11-21 22:17:13,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:14,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-21 22:17:14,153 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:14,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:14,153 INFO L85 PathProgramCache]: Analyzing trace with hash -511999754, now seen corresponding path program 1 times [2023-11-21 22:17:14,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:14,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327418789] [2023-11-21 22:17:14,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:14,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:14,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:14,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514083938] [2023-11-21 22:17:14,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:14,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:14,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:14,166 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:14,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-21 22:17:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:14,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:17:14,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-21 22:17:14,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:14,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:14,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327418789] [2023-11-21 22:17:14,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:14,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514083938] [2023-11-21 22:17:14,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514083938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:14,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:14,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 22:17:14,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948986227] [2023-11-21 22:17:14,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:14,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:17:14,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:14,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:17:14,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:17:14,340 INFO L87 Difference]: Start difference. First operand 520 states and 713 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) [2023-11-21 22:17:14,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:14,595 INFO L93 Difference]: Finished difference Result 994 states and 1371 transitions. [2023-11-21 22:17:14,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:17:14,596 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 [2023-11-21 22:17:14,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:14,601 INFO L225 Difference]: With dead ends: 994 [2023-11-21 22:17:14,601 INFO L226 Difference]: Without dead ends: 519 [2023-11-21 22:17:14,603 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 [2023-11-21 22:17:14,605 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 44 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:14,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 286 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:17:14,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-11-21 22:17:14,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 512. [2023-11-21 22:17:14,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 390 states have (on average 1.264102564102564) internal successors, (493), 396 states have internal predecessors, (493), 79 states have call successors, (79), 25 states have call predecessors, (79), 33 states have return successors, (131), 90 states have call predecessors, (131), 79 states have call successors, (131) [2023-11-21 22:17:14,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 703 transitions. [2023-11-21 22:17:14,646 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 703 transitions. Word has length 74 [2023-11-21 22:17:14,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:14,646 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 703 transitions. [2023-11-21 22:17:14,646 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) [2023-11-21 22:17:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 703 transitions. [2023-11-21 22:17:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-21 22:17:14,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:14,647 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] [2023-11-21 22:17:14,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:14,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-21 22:17:14,861 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:14,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:14,861 INFO L85 PathProgramCache]: Analyzing trace with hash 23693201, now seen corresponding path program 1 times [2023-11-21 22:17:14,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:14,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431675925] [2023-11-21 22:17:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:14,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:14,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:14,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535890560] [2023-11-21 22:17:14,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:14,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:14,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:14,877 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:14,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-21 22:17:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:14,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:17:14,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-21 22:17:15,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:15,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:15,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431675925] [2023-11-21 22:17:15,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:15,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535890560] [2023-11-21 22:17:15,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535890560] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:15,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:17:15,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-21 22:17:15,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827884549] [2023-11-21 22:17:15,133 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:15,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:17:15,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:15,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:17:15,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:17:15,135 INFO L87 Difference]: Start difference. First operand 512 states and 703 transitions. Second operand has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-21 22:17:15,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:15,445 INFO L93 Difference]: Finished difference Result 568 states and 762 transitions. [2023-11-21 22:17:15,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:17:15,445 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 78 [2023-11-21 22:17:15,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:15,450 INFO L225 Difference]: With dead ends: 568 [2023-11-21 22:17:15,450 INFO L226 Difference]: Without dead ends: 567 [2023-11-21 22:17:15,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-11-21 22:17:15,452 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 44 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:15,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 544 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:17:15,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2023-11-21 22:17:15,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 544. [2023-11-21 22:17:15,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 415 states have (on average 1.2530120481927711) internal successors, (520), 422 states have internal predecessors, (520), 82 states have call successors, (82), 28 states have call predecessors, (82), 37 states have return successors, (134), 93 states have call predecessors, (134), 82 states have call successors, (134) [2023-11-21 22:17:15,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 736 transitions. [2023-11-21 22:17:15,499 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 736 transitions. Word has length 78 [2023-11-21 22:17:15,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:15,500 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 736 transitions. [2023-11-21 22:17:15,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-21 22:17:15,500 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 736 transitions. [2023-11-21 22:17:15,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-21 22:17:15,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:15,502 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] [2023-11-21 22:17:15,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:15,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:15,717 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:15,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:15,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1688221236, now seen corresponding path program 1 times [2023-11-21 22:17:15,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:15,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069998801] [2023-11-21 22:17:15,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:15,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:15,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:15,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242039607] [2023-11-21 22:17:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:15,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:15,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:15,731 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:15,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-21 22:17:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:15,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:17:15,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-21 22:17:15,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:15,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:15,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069998801] [2023-11-21 22:17:15,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:15,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242039607] [2023-11-21 22:17:15,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242039607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:15,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:15,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:17:15,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324414247] [2023-11-21 22:17:15,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:15,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:15,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:15,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:15,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:15,900 INFO L87 Difference]: Start difference. First operand 544 states and 736 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 22:17:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:16,280 INFO L93 Difference]: Finished difference Result 548 states and 744 transitions. [2023-11-21 22:17:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:17:16,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 82 [2023-11-21 22:17:16,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:16,285 INFO L225 Difference]: With dead ends: 548 [2023-11-21 22:17:16,285 INFO L226 Difference]: Without dead ends: 547 [2023-11-21 22:17:16,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:17:16,287 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 13 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:16,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 190 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:17:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-11-21 22:17:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 543. [2023-11-21 22:17:16,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 415 states have (on average 1.2289156626506024) internal successors, (510), 421 states have internal predecessors, (510), 82 states have call successors, (82), 28 states have call predecessors, (82), 37 states have return successors, (134), 93 states have call predecessors, (134), 82 states have call successors, (134) [2023-11-21 22:17:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 726 transitions. [2023-11-21 22:17:16,325 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 726 transitions. Word has length 82 [2023-11-21 22:17:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:16,325 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 726 transitions. [2023-11-21 22:17:16,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 22:17:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 726 transitions. [2023-11-21 22:17:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-21 22:17:16,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:16,327 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] [2023-11-21 22:17:16,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:16,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-21 22:17:16,542 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:16,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:16,543 INFO L85 PathProgramCache]: Analyzing trace with hash -795250704, now seen corresponding path program 1 times [2023-11-21 22:17:16,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:16,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19743295] [2023-11-21 22:17:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:16,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:16,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:16,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385744372] [2023-11-21 22:17:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:16,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:16,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:16,553 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:16,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-21 22:17:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:16,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 22:17:16,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 55 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-21 22:17:16,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:17,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:17,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19743295] [2023-11-21 22:17:17,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:17,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385744372] [2023-11-21 22:17:17,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385744372] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:17,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:17:17,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-21 22:17:17,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046648002] [2023-11-21 22:17:17,046 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:17,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-21 22:17:17,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:17,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-21 22:17:17,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:17:17,047 INFO L87 Difference]: Start difference. First operand 543 states and 726 transitions. Second operand has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 6 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-21 22:17:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:17,711 INFO L93 Difference]: Finished difference Result 673 states and 924 transitions. [2023-11-21 22:17:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:17:17,712 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 6 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 83 [2023-11-21 22:17:17,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:17,717 INFO L225 Difference]: With dead ends: 673 [2023-11-21 22:17:17,717 INFO L226 Difference]: Without dead ends: 672 [2023-11-21 22:17:17,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2023-11-21 22:17:17,718 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 97 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:17,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 338 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:17:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-11-21 22:17:17,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 558. [2023-11-21 22:17:17,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.2224824355971897) internal successors, (522), 433 states have internal predecessors, (522), 82 states have call successors, (82), 28 states have call predecessors, (82), 40 states have return successors, (147), 96 states have call predecessors, (147), 82 states have call successors, (147) [2023-11-21 22:17:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 751 transitions. [2023-11-21 22:17:17,771 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 751 transitions. Word has length 83 [2023-11-21 22:17:17,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:17,773 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 751 transitions. [2023-11-21 22:17:17,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 6 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-21 22:17:17,773 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 751 transitions. [2023-11-21 22:17:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-21 22:17:17,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:17,775 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] [2023-11-21 22:17:17,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:17,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-21 22:17:17,994 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:17,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1117032014, now seen corresponding path program 2 times [2023-11-21 22:17:17,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:17,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119709922] [2023-11-21 22:17:17,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:17,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:18,006 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:18,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003940308] [2023-11-21 22:17:18,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:17:18,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:18,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:18,008 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:18,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-21 22:17:18,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:17:18,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:17:18,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-21 22:17:18,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 50 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-21 22:17:18,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:33,725 WARN L876 $PredicateComparison]: unable to prove that (and (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| Int)) (let ((.cse1 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| Int)) (let ((.cse0 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7|))) (or (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse0) 0) (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse1) 0)) (< 0 (+ |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| 1)) (not (= (+ 2147483649 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse0)) 0)) (< 0 (+ 2147483649 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse1)))))) (< 2147483647 .cse1)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| Int)) (let ((.cse2 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| c_fact_~n))) (or (< (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7|) 2147483648) (< 2147483647 .cse2) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| Int)) (or (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse2) 0)) (< 0 (+ 2147483649 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse2)))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| Int)) (let ((.cse3 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| c_fact_~n))) (or (< 2147483647 .cse3) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| Int)) (or (not (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse3) 0)) (< (+ (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7|)) 2147483648) 0) (< 0 (+ 2147483649 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse3)))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| Int)) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| Int)) (or (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| 0) (< 0 (+ 2147483649 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| c_fact_~n)))))) (< (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7|) 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| Int) (|v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| Int)) (or (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| 0) (< (+ (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7|)) 2147483648) 0) (< 0 (+ 2147483649 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| c_fact_~n)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| Int)) (let ((.cse4 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| c_fact_~n))) (or (< 2147483647 .cse4) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| Int)) (let ((.cse5 (+ 2147483649 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse4)))) (or (< (+ (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7|)) 2147483648) 0) (< 0 .cse5) (= .cse5 0))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| Int)) (let ((.cse8 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| Int)) (let ((.cse6 (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7|)) (.cse7 (+ 2147483649 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse8)))) (or (= (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse6) 0) (< 0 (+ |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| 1)) (not (= (+ 2147483649 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse6)) 0)) (< 0 .cse7) (= .cse7 0)))) (< 2147483647 .cse8)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| Int)) (let ((.cse9 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7| c_fact_~n))) (or (< (* |c_fact_#in~n| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_7|) 2147483648) (< 2147483647 .cse9) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| Int)) (let ((.cse10 (+ 2147483649 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_5| .cse9)))) (or (< 0 .cse10) (= .cse10 0)))))))) is different from true [2023-11-21 22:17:49,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:49,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119709922] [2023-11-21 22:17:49,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:49,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003940308] [2023-11-21 22:17:49,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003940308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:49,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:17:49,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-21 22:17:49,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922080529] [2023-11-21 22:17:49,440 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:49,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-21 22:17:49,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:49,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-21 22:17:49,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=317, Unknown=14, NotChecked=36, Total=420 [2023-11-21 22:17:49,442 INFO L87 Difference]: Start difference. First operand 558 states and 751 transitions. Second operand has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-21 22:17:54,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:54,601 INFO L93 Difference]: Finished difference Result 646 states and 885 transitions. [2023-11-21 22:17:54,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:17:54,602 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 84 [2023-11-21 22:17:54,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:54,607 INFO L225 Difference]: With dead ends: 646 [2023-11-21 22:17:54,607 INFO L226 Difference]: Without dead ends: 644 [2023-11-21 22:17:54,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=101, Invalid=590, Unknown=15, NotChecked=50, Total=756 [2023-11-21 22:17:54,609 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 106 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:54,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 334 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:17:54,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2023-11-21 22:17:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 574. [2023-11-21 22:17:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 440 states have (on average 1.2159090909090908) internal successors, (535), 445 states have internal predecessors, (535), 84 states have call successors, (84), 28 states have call predecessors, (84), 41 states have return successors, (153), 100 states have call predecessors, (153), 84 states have call successors, (153) [2023-11-21 22:17:54,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 772 transitions. [2023-11-21 22:17:54,658 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 772 transitions. Word has length 84 [2023-11-21 22:17:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:54,658 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 772 transitions. [2023-11-21 22:17:54,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-21 22:17:54,659 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 772 transitions. [2023-11-21 22:17:54,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-21 22:17:54,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:54,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:54,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:54,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:54,877 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:54,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:54,877 INFO L85 PathProgramCache]: Analyzing trace with hash 231130550, now seen corresponding path program 3 times [2023-11-21 22:17:54,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:54,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882444903] [2023-11-21 22:17:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:54,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:54,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:54,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032612975] [2023-11-21 22:17:54,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:17:54,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:54,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:54,888 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:54,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-21 22:17:54,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-21 22:17:54,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:17:54,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:17:54,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 123 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-21 22:17:55,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-21 22:17:55,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882444903] [2023-11-21 22:17:55,383 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032612975] [2023-11-21 22:17:55,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032612975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:55,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:17:55,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 12 [2023-11-21 22:17:55,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949805409] [2023-11-21 22:17:55,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:55,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:17:55,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:55,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:17:55,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:17:55,385 INFO L87 Difference]: Start difference. First operand 574 states and 772 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2023-11-21 22:17:55,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:55,800 INFO L93 Difference]: Finished difference Result 1167 states and 1601 transitions. [2023-11-21 22:17:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:17:55,800 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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 94 [2023-11-21 22:17:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:55,805 INFO L225 Difference]: With dead ends: 1167 [2023-11-21 22:17:55,805 INFO L226 Difference]: Without dead ends: 632 [2023-11-21 22:17:55,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 172 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:17:55,809 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 60 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:55,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 318 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:17:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-11-21 22:17:55,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 560. [2023-11-21 22:17:55,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 429 states have (on average 1.2214452214452214) internal successors, (524), 435 states have internal predecessors, (524), 82 states have call successors, (82), 28 states have call predecessors, (82), 40 states have return successors, (145), 96 states have call predecessors, (145), 82 states have call successors, (145) [2023-11-21 22:17:55,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 751 transitions. [2023-11-21 22:17:55,851 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 751 transitions. Word has length 94 [2023-11-21 22:17:55,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:55,852 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 751 transitions. [2023-11-21 22:17:55,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2023-11-21 22:17:55,852 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 751 transitions. [2023-11-21 22:17:55,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-21 22:17:55,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:55,853 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:55,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:56,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:56,074 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:56,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:56,074 INFO L85 PathProgramCache]: Analyzing trace with hash -879571087, now seen corresponding path program 1 times [2023-11-21 22:17:56,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:56,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335030721] [2023-11-21 22:17:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:56,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:56,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531056561] [2023-11-21 22:17:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:56,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:56,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:56,085 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:56,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-21 22:17:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:56,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:17:56,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-21 22:17:56,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-21 22:17:56,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:56,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335030721] [2023-11-21 22:17:56,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:56,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531056561] [2023-11-21 22:17:56,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531056561] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:56,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:17:56,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-21 22:17:56,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177717334] [2023-11-21 22:17:56,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:56,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:17:56,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:56,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:17:56,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:17:56,317 INFO L87 Difference]: Start difference. First operand 560 states and 751 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-21 22:17:56,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:56,470 INFO L93 Difference]: Finished difference Result 650 states and 882 transitions. [2023-11-21 22:17:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:17:56,471 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 90 [2023-11-21 22:17:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:56,478 INFO L225 Difference]: With dead ends: 650 [2023-11-21 22:17:56,478 INFO L226 Difference]: Without dead ends: 649 [2023-11-21 22:17:56,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:17:56,480 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 20 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:56,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 240 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-11-21 22:17:56,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 644. [2023-11-21 22:17:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 499 states have (on average 1.222444889779559) internal successors, (610), 506 states have internal predecessors, (610), 96 states have call successors, (96), 28 states have call predecessors, (96), 40 states have return successors, (159), 109 states have call predecessors, (159), 96 states have call successors, (159) [2023-11-21 22:17:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 865 transitions. [2023-11-21 22:17:56,559 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 865 transitions. Word has length 90 [2023-11-21 22:17:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:56,560 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 865 transitions. [2023-11-21 22:17:56,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-21 22:17:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 865 transitions. [2023-11-21 22:17:56,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-21 22:17:56,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:56,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:56,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-21 22:17:56,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:56,782 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:56,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:56,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1598630648, now seen corresponding path program 2 times [2023-11-21 22:17:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:56,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965084429] [2023-11-21 22:17:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:56,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:56,792 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:56,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599265704] [2023-11-21 22:17:56,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:17:56,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:56,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:56,794 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:56,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-21 22:17:56,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:17:56,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:17:56,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:17:56,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-21 22:17:57,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:57,351 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 68 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-21 22:17:57,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:17:57,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965084429] [2023-11-21 22:17:57,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:17:57,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599265704] [2023-11-21 22:17:57,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599265704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:57,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:17:57,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2023-11-21 22:17:57,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294448300] [2023-11-21 22:17:57,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:57,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-21 22:17:57,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:17:57,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-21 22:17:57,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:17:57,355 INFO L87 Difference]: Start difference. First operand 644 states and 865 transitions. Second operand has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 16 states have internal predecessors, (74), 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) [2023-11-21 22:17:57,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:57,992 INFO L93 Difference]: Finished difference Result 1298 states and 1778 transitions. [2023-11-21 22:17:57,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 22:17:57,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 16 states have internal predecessors, (74), 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 93 [2023-11-21 22:17:57,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:57,998 INFO L225 Difference]: With dead ends: 1298 [2023-11-21 22:17:57,998 INFO L226 Difference]: Without dead ends: 695 [2023-11-21 22:17:58,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-11-21 22:17:58,003 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 96 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:58,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 470 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:17:58,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-11-21 22:17:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 621. [2023-11-21 22:17:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 480 states have (on average 1.2229166666666667) internal successors, (587), 487 states have internal predecessors, (587), 95 states have call successors, (95), 28 states have call predecessors, (95), 37 states have return successors, (145), 105 states have call predecessors, (145), 95 states have call successors, (145) [2023-11-21 22:17:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 827 transitions. [2023-11-21 22:17:58,051 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 827 transitions. Word has length 93 [2023-11-21 22:17:58,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:58,052 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 827 transitions. [2023-11-21 22:17:58,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 16 states have internal predecessors, (74), 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) [2023-11-21 22:17:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 827 transitions. [2023-11-21 22:17:58,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-21 22:17:58,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:58,070 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] [2023-11-21 22:17:58,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-21 22:17:58,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:58,286 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-21 22:17:58,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash 402510664, now seen corresponding path program 1 times [2023-11-21 22:17:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:17:58,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829294736] [2023-11-21 22:17:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:17:58,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:17:58,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199792530] [2023-11-21 22:17:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:58,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:17:58,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:58,300 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:17:58,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50298652-2f04-445f-a885-896b19782580/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-21 22:17:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat